Stotler v. Dept. of Transportation ( 2014 )


Menu:
  • ******************************************************
    The ‘‘officially released’’ date that appears near the
    beginning of each opinion is the date the opinion will
    be published in the Connecticut Law Journal or the
    date it was released as a slip opinion. The operative
    date for the beginning of all time periods for filing
    postopinion motions and petitions for certification is
    the ‘‘officially released’’ date appearing in the opinion.
    In no event will any such motions be accepted before
    the ‘‘officially released’’ date.
    All opinions are subject to modification and technical
    correction prior to official publication in the Connecti-
    cut Reports and Connecticut Appellate Reports. In the
    event of discrepancies between the electronic version
    of an opinion and the print version appearing in the
    Connecticut Law Journal and subsequently in the Con-
    necticut Reports or Connecticut Appellate Reports, the
    latest print version is to be considered authoritative.
    The syllabus and procedural history accompanying
    the opinion as it appears on the Commission on Official
    Legal Publications Electronic Bulletin Board Service
    and in the Connecticut Law Journal and bound volumes
    of official reports are copyrighted by the Secretary of
    the State, State of Connecticut, and may not be repro-
    duced and distributed without the express written per-
    mission of the Commission on Official Legal
    Publications, Judicial Branch, State of Connecticut.
    ******************************************************
    ELLEN STOTLER, ADMINISTRATRIX (ESTATE OF
    PAUL A. STOTLER III) v. DEPARTMENT OF
    TRANSPORTATION
    (SC 19177)
    Rogers, C. J., and Palmer, Zarella, Eveleigh, Robinson and Vertefeuille, Js.
    Argued April 30—officially released August 19, 2014
    Joel T. Faxon, with whom, on the brief, was Eric P.
    Smith, for the appellant (plaintiff).
    Ronald D. Williams, Jr., for the appellee (defendant).
    Opinion
    ROGERS, C. J. The dispositive issue in this certified
    appeal is whether a defective highway claim based on
    the design of Route 44 across Avon Mountain falls
    within the purview of General Statutes § 13a-144,1 pur-
    suant to which the state has consented to liability for
    certain injuries caused by a defective highway. The
    plaintiff, Ellen Stotler, administratrix of the estate of
    the decedent, Paul A. Stotler III, brought this action
    pursuant to § 13a-144 against the defendant, the Depart-
    ment of Transportation, to recover damages sustained
    when a truck descending Avon Mountain along Route
    44 experienced brake failure and collided with multiple
    vehicles.2 The defendant filed a motion to dismiss the
    action on the ground that the complaint failed to state
    a claim under § 13a-144 and, therefore, was barred by
    sovereign immunity. The trial court denied the defen-
    dant’s motion to dismiss, and the defendant appealed
    from that decision to the Appellate Court.3 The Appel-
    late Court determined that the plaintiff’s complaint
    failed to state a cause of action under § 13a-144, and,
    accordingly, reversed the judgment of the trial court and
    remanded the case with direction to render judgment
    dismissing the plaintiff’s complaint. Stotler v. Dept. of
    Transportation, 
    142 Conn. App. 826
    , 843, 
    70 A.3d 114
    (2013). We granted the plaintiff’s petition for certifica-
    tion to appeal limited to the following issue: ‘‘Did the
    Appellate Court properly conclude that the plaintiff’s
    action should have been dismissed for lack of subject
    matter jurisdiction because the allegations in the plain-
    tiff’s complaint failed to state a cause of action under
    . . . § 13a-144?’’ Stotler v. Dept. of Transportation, 
    309 Conn. 921
    , 
    76 A.3d 624
    (2013). We answer this question
    in the affirmative and, accordingly, affirm the judgment
    of the Appellate Court.
    The following facts and procedural history are rele-
    vant to our disposition of this appeal. The plaintiff
    brought this defective highway action against the defen-
    dant alleging that, on July 29, 2005, the decedent ‘‘was
    operating his motor vehicle easterly along [Route] 44, a
    public highway in Avon . . . when a series of collisions
    occurred when a truck owned by American Crushing
    and Recycling, LLC, lost control as it traveled down
    Avon Mountain on Route 44 . . . result[ing] in the
    death of [the decedent].’’
    The plaintiff alleged that the decedent’s injuries and
    death resulted from the neglect or default of the defen-
    dant, ‘‘by means of a defective road, in one or more of
    the following ways:
    ‘‘(a) in that [the defendant] utilized a plan of design,
    construction and/or repair for the area of Route 44
    described above, adopted by the state of Connecticut
    and/or its employees, which was totally inadmissible,4
    in that it created an unsafe condition;
    ‘‘(b) in that [the defendant] failed to provide adequate
    warnings and signage on the downhill grade on Route
    44 before the intersection;
    ‘‘(c) in that [the defendant] failed to construct a neces-
    sary runaway truck ramp;
    ‘‘(d) in that [the defendant] failed to prohibit trucks
    on this roadway in the absence of other safeguards;
    ‘‘(e) in that [the defendant] failed to have, or failed to
    have adequate, procedures for maintaining the downhill
    slope in a safe condition;
    ‘‘(f) in that [the defendant] failed to train, or properly
    train, personnel in inspection of, or maintenance of,
    the signage and grade;
    ‘‘(g) in that [the defendant] failed to maintain, or
    properly maintain, the roadway for traffic upon it;
    ‘‘(h) in that [the defendant] failed to inspect, or prop-
    erly inspect, the roadway so that it could be maintained
    or properly maintained;
    ‘‘(i) in that [the defendant] failed to train, or properly
    train, personnel to inspect the roadway so that it could
    be maintained or properly maintained;
    ‘‘(j) in that [the defendant] failed to have, or failed
    to have adequate, procedures for inspecting and main-
    taining the roadway so as to be safe for vehicular traffic;
    ‘‘(k) in that [the defendant] failed to have procedures
    in place so adequate notice could be given to correct
    unsafe conditions on the roadway or so that the road-
    way could be closed;
    ‘‘(l) in that [the defendant] failed to follow procedures
    which were intended to give adequate notice so that
    unsafe conditions on the roadway could be corrected,
    or the roadway closed;
    ‘‘(m) in that [the defendant] failed to provide adequate
    advance warning of said dangerous area to oncoming
    motorists so that they could avoid foreseeable out of
    control vehicles coming down the [Avon] [M]ountain;
    ‘‘(n) in that [the defendant] failed to close the road
    until conditions could be made safe for travel;
    ‘‘(o) in that [the defendant] failed to follow practices
    and procedures set forth in the state’s Policy Manual;
    ‘‘(p) in that [the defendant] failed to properly super-
    vise state agents, servants or employees who were
    responsible for maintaining the roadway in a safe condi-
    tion, and/or
    ‘‘(q) in that [the defendant] failed to install visible
    street signage causing the truck to proceed down [Avon]
    [M]ountain missing the turn off.’’ (Footnote added.)
    The defendant filed a motion to dismiss the action
    on the ground that the plaintiff’s allegations were insuf-
    ficient, as a matter of law, to state a claim under § 13a-
    144.5 Specifically, the defendant claimed that the allega-
    tions did not fall within the limited exception to the
    general rule barring design defect claims under the
    defective highway statute. After a hearing, the trial
    court, Sheldon, J., denied the defendant’s motion to
    dismiss.6 The trial court reasoned that ‘‘the plan of
    design providing for the steep downhill grade of Route
    44, which has always been open to truck traffic, is
    alleged and may be proved by the [plaintiff] to have been
    defective from the outset because its incorporation into
    the roadway created a condition, intrinsic to the road-
    way, that constituted a nuisance, when the roadway
    was used as intended by trucks, from which injury [was]
    ultimately necessarily the inevitable or probable result.’’
    (Internal quotation marks omitted.)
    The defendant appealed from the trial court’s deci-
    sion to the Appellate Court.7 The Appellate Court con-
    cluded that the plaintiff failed to allege an actionable
    highway defect under § 13a-144 and, therefore, that her
    claim was barred by sovereign immunity. Stotler v. Dept.
    of 
    Transportation, supra
    , 
    142 Conn. App. 841
    . The
    Appellate Court reasoned that the trial court miscon-
    strued the plaintiff’s complaint as alleging that the steep
    downhill grade of the road alone is an actionable high-
    way design defect.8 
    Id., 840–41. Instead,
    the Appellate
    Court construed the complaint to allege that the design
    of Route 44 providing for the steep downhill grade in
    combination with the lack of tangible safety measures
    rendered the road defective. 
    Id., 841. The
    Appellate
    Court determined that the absence of safety measures
    is not an actionable highway defect, and, therefore,
    the plaintiff failed to state a claim under § 13a-144. 
    Id. Accordingly, the
    Appellate Court reversed the judgment
    of the trial court. 
    Id., 843. This
    certified appeal
    followed.9
    We begin with the governing legal principles and stan-
    dard of review. ‘‘[W]e have long recognized the validity
    of the common-law principle that the state cannot be
    sued without its consent . . . . Nevertheless, a plain-
    tiff may surmount this bar against suit if, inter alia, he
    can demonstrate that the legislature, either expressly
    or by force of a necessary implication, statutorily
    waived the state’s sovereign immunity. . . . Even
    when there is an express statutory waiver of immunity,
    however, the plaintiff’s complaint must allege a claim
    falling within the scope of that waiver. . . .
    ‘‘Lack of a statutory waiver of immunity is a jurisdic-
    tional defect properly raised by a motion to dismiss.
    . . . A motion to dismiss . . . properly attacks the
    jurisdiction of the court, essentially asserting that the
    plaintiff cannot as a matter of law and fact state a cause
    of action that should be heard by the court. . . . [O]ur
    review of the court’s ultimate legal conclusion and
    resulting [determination] of the motion to dismiss will
    be de novo. . . .
    ‘‘When a trial court decides a jurisdictional question
    raised by a pretrial motion to dismiss on the basis of
    the complaint alone, it must consider the allegations
    of the complaint in their most favorable light. . . . In
    this regard, a court must take the facts to be those
    alleged in the complaint, including those facts necessar-
    ily implied from the allegations, construing them in
    a manner most favorable to the pleader.’’ (Citations
    omitted; footnote omitted; internal quotation marks
    omitted.) Conboy v. State, 
    292 Conn. 642
    , 649–51, 
    974 A.2d 669
    (2009).
    ‘‘The state highway liability statute is a legislative
    exception to the common law doctrine of sovereign
    immunity and is to be strictly construed in favor of the
    state. While negligence was a common law tort, there
    was no liability of the sovereign at common law for a
    defective highway in negligence or on any other com-
    mon law theory. . . . The state highway liability stat-
    ute imposes the duty to keep the state highways in
    repair upon the highway commissioner; that is the statu-
    tory command. Therefore, because there was no right
    of action against the sovereign at common law, a plain-
    tiff, in order to recover, must bring himself within § 13a-
    144.’’ (Citations omitted.) White v. Burns, 
    213 Conn. 307
    , 321, 
    567 A.2d 1195
    (1990).
    In order for a plaintiff to recover under § 13a-144,
    ‘‘the plaintiff must prove by a preponderance of the
    evidence: (1) that the highway was defective as claimed;
    (2) that the [Commissioner of Transportation] actually
    knew of the particular defect or that, in the exercise
    of [his] supervision of highways . . . [he] should have
    known of that defect; (3) that the [Commissioner of
    Transportation], having actual or constructive knowl-
    edge of this defect, failed to remedy it having had a
    reasonable time, under all the circumstances, to do so;
    and (4) that the defect must have been the sole proxi-
    mate cause of the injuries and damages claimed, which
    means that the plaintiff must prove freedom from con-
    tributory negligence.’’ (Internal quotation marks omit-
    ted.) McIntosh v. Sullivan, 
    274 Conn. 262
    , 268, 
    875 A.2d 459
    (2005). ‘‘Whether a highway is defective may involve
    issues of fact, but whether the facts alleged would, if
    true, amount to a highway defect according to the stat-
    ute is a question of law . . . .’’ (Internal quotation
    marks omitted.) Ferreira v. Pringle, 
    255 Conn. 330
    ,
    341–42, 
    766 A.2d 400
    (2001).
    We have defined a highway defect as ‘‘any object or
    condition in, upon, or near the traveled path which
    would necessarily obstruct or hinder one in the use of
    the road for the purpose of traveling thereon, or which,
    from its nature and position, would be likely to produce
    that result.’’ Hickey v. Newtown, 
    150 Conn. 514
    , 518–19,
    
    192 A.2d 199
    (1963); accord McIntosh v. 
    Sullivan, supra
    ,
    
    274 Conn. 268
    –69 (‘‘[w]e have held that a highway defect
    is [a]ny object in, upon, or near the traveled path, which
    would necessarily obstruct or hinder one in the use of
    the road for the purpose of traveling thereon, or which,
    from its nature and position, would be likely to produce
    that result’’ [internal quotation marks omitted]). ‘‘[I]f
    there is a defective condition that is not in the roadway,
    it must be so direct a menace to travel over the way
    and so susceptible to protection and remedial measures
    which could be reasonably applied within the way that
    the failure to employ such measures would be regarded
    as a lack of reasonable repair.’’ Comba v. Ridgefield,
    
    177 Conn. 268
    , 271, 
    413 A.2d 859
    (1979); see 
    id., 269, 271
    (overhanging tree limb that fell on automobile was
    not highway defect because it ‘‘did not obstruct, hinder
    or operate as a menace to travel’’).
    Moreover, ‘‘[w]e have consistently held that [t]he
    state is not an insurer of the safety of travelers on the
    highways which it has a duty to repair. Thus, it is not
    bound to make the roads absolutely safe for travel. . . .
    Rather, the test is whether or not the state has exercised
    reasonable care to make and keep such roads in a
    reasonably safe condition for the reasonably prudent
    traveler.’’ (Internal quotation marks omitted.) Hall v.
    Burns, 
    213 Conn. 446
    , 462–63, 
    569 A.2d 10
    (1990);
    accord Donnelly v. Ives, 
    159 Conn. 163
    , 167, 
    268 A.2d 406
    (1970) (‘‘[t]he duty imposed on the state by the
    provision of the defective highway statute is not such
    as to make the state an insurer for people using those
    highways which the defendant must keep in repair but
    is rather a duty to exercise reasonable care to make
    and keep such roads in a reasonably safe condition
    for the reasonably prudent traveler’’); Chazen v. New
    Britain, 
    148 Conn. 349
    , 353, 
    170 A.2d 891
    (1961) (‘‘a
    [state] is not an insurer against accidents occurring on
    its highways; its duty is not to make the streets abso-
    lutely safe for the users thereof but only to exercise
    reasonable care to keep them in a reasonably safe condi-
    tion for travel’’).
    With these governing legal principles in mind, we
    turn to the plaintiff’s allegations in the present case. In
    her complaint, the plaintiff alleges that the defendant
    ‘‘utilized a plan of design, construction and/or repair
    . . . which was totally inadmissible, in that it created an
    unsafe condition . . . .’’ See footnote 4 of this opinion.
    Specifically, the plaintiff alleges that the absence of
    tangible safety measures, including a runaway truck
    ramp and adequate signage warning of the steep down-
    hill grade, as well as the failure to prohibit trucks on the
    roadway in the absence of these and other safeguards,
    rendered the roadway defective.10
    Although the plaintiff does not specifically allege that
    the downhill grade of the roadway constituted part of
    the claimed design defect, we are mindful that ‘‘[t]he
    complaint must be read in its entirety in such a way as
    to give effect to the pleading with reference to the
    general theory upon which it proceeded . . . .’’ (Inter-
    nal quotation marks omitted.) Grenier v. Commis-
    sioner of Transportation, 
    306 Conn. 523
    , 536, 
    51 A.3d 367
    (2012). Indeed, the plaintiff argues, and we agree,
    that her allegations concerning the absence of certain
    safety measures must be viewed in the context of the
    steep downhill grade of Route 44. As the plaintiff states
    in her brief, ‘‘[a]lleged defects such as the absence of
    a runaway truck ramp, and adequate signage are only
    defective because of the topography of Route 44. If
    Route 44 was flat, or had a substantially less severe
    gradient . . . [safety measures] like a runaway truck
    ramp would be entirely unnecessary.’’ (Emphasis in
    original.)
    We note, however, that the plaintiff has conceded
    both in her appellate brief and at oral argument before
    this court that she has not alleged that the steep down-
    hill grade of Route 44 alone constitutes an actionable
    highway defect.11 See footnote 8 of this opinion. Indeed,
    by her own account, the plaintiff alleges that the defect
    in the present case consists of the ‘‘dangerously steep
    road surface that channels descending traffic into a
    major crossing intersection immediately at the bottom
    of the slope, together with the absence of an escape
    ramp to divert and contain vehicles encountering run-
    away conditions, and the absence of adequate warning
    signs to alert drivers to the severity of the conditions
    they were about to encounter before they were irrevoca-
    bly committed to the descent.’’ (Emphasis added.) Put
    simply, the plaintiff’s complaint alleges that the design
    of the roadway consisting of the steep downhill grade,
    in the absence of certain identified safety measures,
    rendered it unsafe for public travel and thus defective
    within the meaning of § 13a-144.
    The question then becomes whether the complaint,
    so construed, states a cause of action under the defec-
    tive highway statute. We begin our analysis with an
    overview of the parameters of the right of action
    afforded under § 13a-144 for damages arising from an
    alleged defect in a highway’s design. ‘‘[I]t is well estab-
    lished that a public authority acts in a quasi-judicial or
    legislative capacity in adopting a plan for the improve-
    ment or repair of its streets or highways and ordinarily
    will not be liable for consequential damages for injuries
    due to errors or defects in the plan adopted. . . . Thus,
    as we stated in Hoyt v. Danbury, 
    69 Conn. 341
    , 
    37 A. 1051
    (1897), [a] defect in the plan upon which [a] high-
    way [is] constructed . . . [does] not [come] within the
    [defective highway] statute. . . . [Thus] injuries which
    it may occasion to travelers cannot be made the subject
    of any action in their favor. They are the result of an
    error of judgment on the part of the officers of a public
    corporation, on which has been cast the burden of dis-
    charging a governmental duty of a quasi-judicial charac-
    ter. For consequential damages thus occasioned to
    members of the general public, the common law never
    gave a remedy; nor has the statute changed the rule.
    . . . 
    Id., 351–52.12 ‘‘Recognizing
    that an unduly rigid application of this
    rule could work an injustice in certain circumstances,
    however, the court in Hoyt also stated, in dictum, that,
    [i]f . . . a defect in the plan of construction should be
    so great as soon to require repairs in order to make the
    highway safe for travel, a neglect to make these repairs
    might [support] an action; but the plaintiff’s case would
    be no stronger than if the road had been originally built
    in the best manner. So, were the plan of construction
    adopted one which was totally inadmissible . . . the
    highway would have been in such a defective condition
    as to have been out of repair from the beginning. 
    Id., 352 .
    . . .’’ (Citations omitted; footnote added; internal
    quotation marks omitted.) McIntosh v. 
    Sullivan, supra
    ,
    
    274 Conn. 270
    –71.
    ‘‘The hypothetical design claim that the court in Hoyt
    used to illustrate what an actionable design claim might
    resemble reveals the true nature and limitation of the
    ‘exception.’ Specifically, the court described a sidewalk
    that ‘had been left with its grade broken simply by a
    four foot wall, without the provision of steps . . . .’
    [Hoyt v. 
    Danbury, supra
    , 
    69 Conn. 352
    ]. According to
    the court, such a sidewalk ‘would have been in such a
    defective condition as to have been out of repair from
    the beginning.’ 
    Id. Thus, the
    cognizable design defect
    claim that the court hypothesized in Hoyt essentially
    would consist of an allegation that the plan of design
    called for a four foot drop or hole in the road. Indeed,
    the court in Hoyt immediately went on to state that,
    under its hypothetical, the plaintiff’s claim would be
    ‘no stronger than if the road had been originally built
    in the best manner’; id.; because, logically, the highway
    defect statute covers four foot holes in the middle of
    the roadbed irrespective of how they came to be there.
    In other words, a design defect claim can be distin-
    guished from a traditional highway defect claim only
    insofar as the former includes an allegation that the
    dangerous condition inhered in the highway’s plan of
    design, that is, the defect was not created by some other
    external condition, such as a particular occurrence, like
    a storm, or normal wear and tear. In all other respects,
    however, a design defect claim is indistinguishable
    from any other highway defect claim and, accordingly,
    it is subject to all the same statutory requirements,
    including the requirement that the alleged defect actu-
    ally be in the roadbed or so near to it as to ‘necessarily
    obstruct or hinder one in the use of the road for the
    purpose of traveling thereon . . . .’ Hewison v. New
    Haven, [
    34 Conn. 136
    , 142 (1867)]. [That is], Hoyt merely
    precludes the state from raising sovereign immunity as
    a defense when the plan of design, as implemented,
    creates the very type of hazardous condition for which
    the highway defect statute abrogated governmental
    immunity in the first place and for which the govern-
    ment otherwise would be liable had the dangerous con-
    dition originated through means other than the plan of
    design.’’ (Emphasis added.) McIntosh v. 
    Sullivan, supra
    , 
    274 Conn. 281
    –82. Therefore, ‘‘notwithstanding
    the general rule that the state is not liable for damages
    sustained by a traveler due to a defect in a highway’s
    design, the state nevertheless may be liable if such a
    defect gave rise to a hazard that otherwise would be
    actionable under § 13a-144.’’ 
    Id., 271. Thus,
    the issue we must decide in the present case
    is whether the plaintiff’s allegations, if true, would
    amount to an actionable highway defect claim within
    the narrow exception in Hoyt to the general rule pre-
    cluding liability for design defects. The plaintiff argues
    that the plan pursuant to which the highway was con-
    structed was ‘‘totally inadmissible’’ because the high-
    way was ‘‘inherently dangerous when put to the use for
    which it was intended and for which it [was] lawfully
    open.’’ Specifically, the plaintiff claims that the road-
    way’s steep grade and layout, combined with the
    absence of tangible safety measures, constituted a con-
    dition intrinsic to the roadway that rendered it defective
    within the meaning of the highway defect statute.13 In
    response, the defendant claims that the steep downhill
    grade, together with the lack of safety measures, does
    not constitute an actionable highway defect because it
    is not a hazardous object or condition in or near the
    roadbed that necessarily obstructed travel thereon. Fur-
    thermore, the defendant argues that the plaintiff’s claim
    is materially indistinguishable from the design defect
    claim in McIntosh that this court held was not action-
    able under § 13a-144. We agree with the defendant.
    Accordingly, we conclude that the plaintiff’s allegations
    are insufficient as a matter of law to state a claim
    pursuant to § 13a-144.
    First, we are not persuaded by the plaintiff’s attempt
    to distinguish her claim in the present case from the
    claim raised in McIntosh that this court held was barred
    by sovereign immunity. In McIntosh, the plaintiff, Adal-
    bert H. McIntosh, Sr., brought a highway defect claim
    under § 13a-144 for injuries he sustained when rocks
    and debris fell from a rocky ledge ‘‘adjacent to and
    above [the] highway’’ and struck his motor vehicle.
    (Internal quotation marks omitted.) 
    Id., 264. McIntosh
    alleged that the highway was defectively designed in
    that, inter alia, ‘‘the highway was located dangerously
    close to raised rocky cliffs . . . the [defendant, the
    Commissioner of Transportation] failed to erect barri-
    ers . . . to prevent falling rocks and debris from enter-
    ing the highway . . . [and] there were no warning signs
    in the area to warn approaching motorists of the hazard-
    ous and dangerous conditions then and there existing
    . . . .’’ (Internal quotation marks omitted.) 
    Id., 264–65. The
    trial court denied the Commissioner of Transporta-
    tion’s motion to dismiss the action for failure to state a
    claim under § 13a-144, and the Appellate Court affirmed
    the trial court’s decision. McIntosh v. Sullivan, 77 Conn.
    App. 641, 644–45, 
    825 A.2d 207
    (2003).
    On appeal, this court reversed the judgment of the
    Appellate Court. McIntosh v. 
    Sullivan, supra
    , 
    274 Conn. 264
    . We concluded that ‘‘[McIntosh’s] allegations [were]
    insufficient to establish an actionable claim under § 13a-
    144 because the rocks and debris located above the
    highway did not impede or obstruct travel thereon.’’
    
    Id., 285. Because
    McIntosh failed to allege an actionable
    highway defect, we held that, ‘‘[a] fortiori, [his] allega-
    tions [were] insufficient to fall within the limited excep-
    tion to the general rule precluding liability for design
    defects.’’ 
    Id. Thus, the
    court determined that the plan
    of design providing for the location of the highway next
    to a rocky cliff, in combination with the absence of
    adequate warning signs and a barrier to prevent falling
    rocks from entering the highway, did not render the
    highway defective within the meaning of the defective
    highway statute.
    Similarly, in the present case, we conclude that the
    plan of design providing for the steep downhill grade
    of the highway, in combination with the absence of
    adequate warning signs and tangible safety measures,
    did not render the highway defective within the meaning
    of § 13a-144. The absence of adequate warning signs and
    tangible safety measures is not a cognizable highway
    defect because it does not constitute an ‘‘object or con-
    dition in . . . the traveled path which would necessar-
    ily obstruct or hinder one in the use of the road for the
    purpose of traveling thereon . . . .’’14 Hickey v. New-
    
    town, supra
    , 
    150 Conn. 518
    . Although the plaintiff claims
    that certain safety measures were necessary because of
    the steep downhill grade, and that the absence thereof
    rendered the road unsafe, this claim still pertains
    directly to the design of the road and not to whether that
    design, as implemented, created an actionable hazard in
    the road that necessarily obstructed travel. Indeed, this
    court in McIntosh rejected the notion that the absence
    of certain safety measures is an actionable defect,
    despite the fact that these measures may have been
    warranted in view of the highway’s close proximity to
    a rocky ledge.
    The plaintiff further claims that McIntosh is distin-
    guishable from the present case because the steep
    downhill grade of Route 44, unlike the rocky ledge abut-
    ting the highway in McIntosh, is a condition intrinsic
    to the highway that rendered the road defective.15
    Although we acknowledge this limited distinction, we
    are not persuaded that it compels a different result in
    the present case. The steep downhill grade, albeit a
    natural condition inherent to the roadway by virtue of
    its location across Avon Mountain, is no more cogniza-
    ble a defect than the rocky ledge located adjacent to
    the roadway in McIntosh. Neither are objects or condi-
    tions in or near the road ‘‘which would necessarily
    obstruct or hinder one in the use of the road for the
    purpose of traveling thereon, or which, from its nature
    and position, would be likely to produce that result
    . . . .’’ Hewison v. New 
    Haven, supra
    , 
    34 Conn. 142
    .
    Moreover, the steep downhill grade is a condition that
    pertains solely to the design of the road, namely, its
    location across Avon Mountain. In order to be a cogniza-
    ble design defect, however, the defective design must
    result in an actionable hazard in the road that necessar-
    ily obstructed travel. Under the reasoning in McIntosh,
    the steep downhill grade, together with the lack of ade-
    quate warning signs and tangible safety measures, is not
    an actionable highway defect.16 Therefore, the plaintiff
    cannot, as a matter of law, state a claim under § 13a-
    144 within the limited exception to the general rule
    precluding liability for design defects.
    Furthermore, the present case is distinguishable from
    the handful of cases in which this court has recognized
    a cognizable highway design defect claim. For instance,
    in Perrotti v. Bennett, 
    94 Conn. 533
    , 534–35, 
    109 A. 890
    (1920), the municipality installed a drain pipe below
    the surface of the highway and, in accordance with the
    plan adopted, covered it with twelve inches of sand
    and gravel. The plaintiff brought a highway defect claim
    against the municipality after he was injured when the
    highway above the pipe collapsed under the weight
    of his vehicle. 
    Id., 535. The
    trial court found that the
    plaintiff’s injuries were ‘‘due to a defect in the original
    plan of construction of said drain,’’ and rendered judg-
    ment for the municipality. 
    Id., 535–36. On
    appeal, we
    reversed the trial court’s judgment, concluding that the
    plaintiff’s claim fell within the limited exception to the
    general rule barring liability for design defect claims
    pursuant to § 13a-144. 
    Id., 541–42.17 In
    Perrotti, unlike in the present case, the plaintiff
    alleged an otherwise actionable highway defect,
    namely, the poorly constructed drain under the surface
    of the highway that collapsed under the weight of a
    vehicle traveling thereon. See 
    id., 535. The
    poorly con-
    structed drain constituted a condition ‘‘in the roadbed
    or so near to it as to necessarily obstruct or hinder one
    in the use of the road for the purpose of traveling
    thereon . . . .’’ (Internal quotation marks omitted.)
    McIntosh v. 
    Sullivan, supra
    , 
    274 Conn. 282
    ; see Perrotti
    v. 
    Bennett, supra
    , 
    94 Conn. 541
    (‘‘from the time the
    drain was laid it constituted a defect in the highway,
    whether this was due to the want of adequate covering,
    or to the character of the pipe, or both’’). The municipal-
    ity could not escape liability merely because the drain
    was constructed pursuant to a plan of design that the
    municipality adopted in its ‘‘quasi-judicial or legislative
    capacity’’; Donnelly v. 
    Ives, supra
    , 
    159 Conn. 168
    ;
    because the plan, as implemented, created a defect ‘‘for
    which the government otherwise would be liable had
    the dangerous condition originated through means
    other than the plan of design.’’ McIntosh v. 
    Sullivan, supra
    , 282; see 
    id. (Hoyt exception
    ‘‘precludes the state
    from raising sovereign immunity as a defense when the
    plan of design, as implemented, creates the very type
    of hazardous condition for which the highway defect
    statute abrogated governmental immunity in the first
    place’’). The municipality was therefore liable for injur-
    ies caused by the defective plan of design ‘‘after it had
    reasonable notice of the defect and of the imminence
    of the injury.’’ Perrotti v. 
    Bennett, supra
    , 541.
    In the present case, by contrast, the plan of design
    providing for the steep downhill grade, together with
    the absence of tangible safety measures, as imple-
    mented, did not create an otherwise actionable highway
    defect as defined by our case law. As discussed pre-
    viously in this opinion, a highway defect is ‘‘[a]ny object
    [or condition] in, upon, or near the traveled path, which
    would necessarily obstruct or hinder one in the use of
    the road for the purpose of traveling thereon, or which,
    from its nature and position, would be likely to produce
    that result . . . .’’ (Internal quotation marks omitted.)
    McIntosh v. 
    Sullivan, supra
    , 
    274 Conn. 273
    ; Hickey v.
    New
    town, supra
    , 
    150 Conn. 518
    –19. A properly con-
    structed road on a 10 percent downhill grade, together
    with the absence of certain tangible safety measures,
    does not constitute a condition or object in the traveled
    path that would necessarily obstruct travel thereon.
    Indeed, the plaintiff does not claim that the road itself
    was in poor condition, either ‘‘in material or manner
    of construction . . . .’’ Hoyt v. 
    Danbury, supra
    , 
    69 Conn. 352
    . Instead, the plaintiff seeks to hold the defen-
    dant liable for its decision to construct a highway across
    a steep downhill grade, without including certain identi-
    fied safety measures. This is precisely the nature of the
    claim that is precluded by virtue of Hoyt and its prog-
    eny. See Donnelly v. 
    Ives, supra
    , 
    159 Conn. 168
    (‘‘a
    public authority acts in a quasi-judicial or legislative
    capacity in adopting a plan for the [construction] of its
    streets or highways and ordinarily will not be liable
    for consequential damages for injuries due to error or
    defects in the plan adopted’’); Hoyt v. 
    Danbury, supra
    ,
    351 (‘‘[a] defect in the plan upon which [a] highway [is]
    constructed . . . [does] not [come] within the [high-
    way defect] statute’’).
    In the absence of an actionable hazard in the road that
    necessarily obstructed travel thereon, the defendant’s
    decision in the present case regarding the location of
    the highway across a steep downhill grade, and the
    extent of warning signs necessary to alert motorists
    thereto, is not subject to collateral review by this court.
    ‘‘[I]t has long been the settled view, and an eminently
    justifiable one, that courts should not be permitted to
    review [the] determinations of governmental planning
    bodies under the guise of allowing them to be chal-
    lenged in negligence suits; something more than a mere
    choice between conflicting opinions of experts is
    required before the [s]tate or one of its subdivisions
    may be charged with a failure to discharge its duty to
    plan highways for the safety of the traveling public.’’
    (Internal quotation marks omitted.) Donnelly v. 
    Ives, supra
    , 
    159 Conn. 168
    ; see 
    id., 165 n.2,
    169 (affirming
    directed verdict in favor of highway commissioner with
    respect to highway design defect claim alleging poor
    highway layout and inadequate warning signs); see also
    Hoyt v. 
    Danbury, supra
    , 
    69 Conn. 351
    (‘‘so long as
    the [sidewalk design] selected was an appropriate and
    lawful one [in that stairs were properly constructed and
    in a state of repair], [the defendant city’s] decision was
    not subject to collateral review in a suit of this
    nature’’).18
    Under the theory of liability the plaintiff advocates
    in the present case, virtually every design defect claim
    pertaining directly to the layout of the road would be
    actionable under the defective highway statute.19 That
    is, if we were to decide that a highway’s layout across
    a 10 percent downhill grade, in the absence of tangible
    safety measures, constitutes a ‘‘condition in, upon or
    near the traveled path which would necessarily obstruct
    or hinder . . . traveling thereon’’; Hickey v. New
    town, supra
    , 
    150 Conn. 518
    ; then conceivably any highway
    design could be described as a defective ‘‘condition’’
    intrinsic to the highway. This result would hamstring
    states and municipalities in discharging their respective
    ‘‘duty to plan highways for the safety of the traveling
    public.’’ (Internal quotation marks omitted.) Donnelly
    v. 
    Ives, supra
    , 
    159 Conn. 168
    . We simply cannot construe
    the defective highway statute in a manner that would
    eviscerate the general rule precluding liability for design
    defect claims under Hoyt and its progeny. See White
    v. 
    Burns, supra
    , 
    213 Conn. 321
    (‘‘[t]he state highway
    liability statute . . . is to be strictly construed in favor
    of the state’’).
    For the reasons set forth herein, we conclude that the
    Appellate Court properly determined that the plaintiff’s
    complaint fails to state a claim under § 13a-144. There-
    fore, the plaintiff’s claim is barred by the doctrine of
    sovereign immunity and should have been dismissed
    by the trial court.
    The judgment of the Appellate Court is affirmed.
    In this opinion PALMER, ZARELLA, ROBINSON and
    VERTEFEUILLE, Js., concurred.
    1
    General Statutes §13a-144 provides in relevant part: ‘‘Any person injured
    in person or property through the neglect or default of the state or any of
    its employees by means of any defective highway, bridge or sidewalk which
    it is the duty of the Commissioner of Transportation to keep in repair . . .
    or, in case of the death of any person by reason of any such neglect or
    default, the executor or administrator of such person, may bring a civil
    action to recover damages sustained thereby against the commissioner in
    the Superior Court. . . .’’
    2
    Prior to instituting this action, the plaintiff filed the requisite statutory
    notice of a claim for damages, pursuant to § 13a-144, with the Commissioner
    of Transportation, Stephen E. Korta II, and the state of Connecticut.
    3
    Despite the general rule that interlocutory rulings are not immediately
    appealable, the denial of a motion to dismiss based on a colorable claim of
    sovereign immunity is an appealable final judgment. See, e.g., McIntosh v.
    Sullivan, 
    274 Conn. 262
    , 264 n.2, 
    875 A.2d 459
    (2005); Gordon v. H.N.S.
    Management Co., 
    272 Conn. 81
    , 91 n.12, 
    861 A.2d 1160
    (2004).
    4
    The term ‘‘inadmissible’’ is apparently taken from this court’s decision
    in Hoyt v. Danbury, 
    69 Conn. 341
    , 352, 
    37 A. 1051
    (1897), wherein the court
    articulated the following exception to the general rule precluding liability
    for highway design defects: ‘‘If . . . a defect in the plan of construction
    should be so great as soon to require repairs in order to make the highway
    safe for travel, a neglect to make these repairs might [support] an action;
    but the plaintiff’s case would be no stronger than if the road had been
    originally built in the best manner. So, were the plan of construction adopted
    one which was totally inadmissible . . . the highway would have been in
    such a defective condition as to have been out of repair from the beginning.’’
    (Emphasis added.) Thus, the term ‘‘inadmissible,’’ as used throughout this
    opinion, denotes a plan of construction that is so inadequate that the highway
    is ‘‘out of repair from the beginning’’ and thus ‘‘require[s] repairs in order
    to make the highway safe for travel . . . .’’ 
    Id. 5 More
    specifically, the defendant filed a hybrid motion captioned ‘‘motion
    to dismiss and/or for summary judgment’’ in which it claimed that the
    plaintiff’s complaint was barred by the doctrine of sovereign immunity and/
    or there is no genuine issue as to any material fact, and the defendant is
    entitled to judgment as a matter of law. With respect to its summary judgment
    claim, the defendant argued that it was entitled to judgment as a matter of
    law because the alleged highway defect was not the sole proximate cause
    of the plaintiff’s injuries. See, e.g., Ormsby v. Frankel, 
    255 Conn. 670
    , 675–76,
    
    768 A.2d 441
    (2001) (plaintiff bringing claim under § 13a-144 must prove
    that alleged highway defect was sole proximate cause of injuries claimed).
    In particular, the defendant claimed that there was no genuine issue of
    material fact that the dump truck involved in the collision had defective
    brakes, and that the defective brakes were a proximate cause of the plain-
    tiff’s injuries.
    The trial court, Sheldon, J., denied the defendant’s motion for summary
    judgment and the defendant appealed from that decision to the Appellate
    Court. The Appellate Court, however, declined to review the defendant’s
    summary judgment claim in light of its threshold determination that the
    plaintiff’s complaint should have been dismissed for failure to state a claim
    under § 13a-144. Stotler v. Dept. of Transportation, 
    142 Conn. App. 826
    ,
    842–43, 
    70 A.3d 114
    (2013).
    After we granted the plaintiff’s petition for certification, the defendant
    raised as an alternative ground for affirmance that ‘‘the claimed highway
    defects were not, as a matter of law, the sole proximate causes of the
    subject accident.’’ See Practice Book § 84-11. Because we conclude that the
    Appellate Court properly reversed the judgment of the trial court on the
    ground that the plaintiff’s complaint failed to state a claim under § 13a-144,
    we do not reach the merits of the defendant’s alternative ground for
    affirmance.
    6
    Earlier in the proceedings, the trial court, Graham, J., granted the defen-
    dant’s motion to consolidate this action, pursuant to Practice Book § 9-5,
    with the related action in Cummings v. Dept. of Transportation, Superior
    Court, judicial district of Hartford, Docket No. CV-07-5011774-S (September
    29, 2011). The trial court, Sheldon, J., therefore issued a memorandum of
    decision that disposed of the defendant’s motions to dismiss and/or for
    summary judgment in both cases.
    7
    The defendant appealed from the trial court’s judgment in both the
    present case and Cummings v. Dept. of Transportation, Superior Court,
    judicial district of Hartford, Docket No. CV-07-5011774-S (September 29,
    2011). See Cummings v. Dept. of Transportation, 
    142 Conn. App. 843
    , 
    68 A.3d 123
    (2013). The Appellate Court consolidated the two appeals for oral
    argument only. 
    Id., 847 n.2.
       8
    In her main appellate brief, the plaintiff argues that the trial court did
    not construe the complaint to allege that solely the steep downhill grade
    rendered the road defective. ‘‘The plaintiff submits, however, that her dis-
    agreement on this issue is ultimately irrelevant given the Appellate Court’s
    recognition of the plaintiff’s actual defect claim, which involves a defective
    road design and/or layout combined with the absence of adequate warning
    signs and other safety measures on or attached to the roadway.’’ (Empha-
    sis added.)
    9
    For the purposes of oral argument only, this court consolidated the
    present case and the related certified appeal in Cummings v. Dept. of
    Transportation, 313 Conn. ,              A.3d   (2014).
    10
    To the extent that the plaintiff alleges that the defendant’s deficient
    conduct regarding the training of its employees, the inspection and mainte-
    nance of the roadway, and the adherence to proper procedures constitutes
    an actionable highway defect pursuant to § 13a-144, we conclude that the
    Appellate Court properly determined that these alleged deficiencies are not
    cognizable defects under the highway defect statute. Stotler v. Dept. of
    
    Transportation, supra
    , 
    142 Conn. App. 841
    –42. Indeed, none of these allega-
    tions relates to the existence of ‘‘[a]ny object in, upon, or near the traveled
    path, which would necessarily obstruct or hinder one in the use of the road
    for the purpose of traveling thereon, or which, from its nature and position,
    would be likely to produce that result . . . .’’ (Internal quotation marks
    omitted.) McIntosh v. 
    Sullivan, supra
    , 
    274 Conn. 273
    . Therefore, these allega-
    tions do not support a claim for liability under the defective highway statute.
    11
    In her brief, the plaintiff states: ‘‘While it is true that the complaint does
    not specify the extent of Route 44’s grade, and also true that the plaintiff’s
    expert testified that he did not regard the 10 [percent] grade of the highway
    as per se or necessarily defective when standing alone, that condition cannot
    be considered in isolation because it provides the essential context through
    which the defects expressly claimed by the plaintiff must be viewed.’’
    (Emphasis added.)
    During oral argument before this court, the plaintiff averred that the
    alleged defect is comprised of a combination of factors, rather than the
    downhill grade standing alone:
    ‘‘The Court: What is the highway defect?
    ‘‘The Plaintiff’s Counsel: A combination of things. Number one is Route
    44 has a 10 percent grade.
    ‘‘The Court: Is that a defect?
    ‘‘The Plaintiff’s Counsel: In part.
    ‘‘The Court: How?
    ‘‘The Plaintiff’s Counsel: Because it does not incorporate the intrinsic
    portions of the defect with proper safety applications . . . including a run-
    away ramp. . . .
    ‘‘The Court: So it’s not the 10 percent grade; it’s something in addition
    to the 10 percent grade?
    ‘‘The Plaintiff’s Counsel: Right, it’s a package of facts that lead to the
    defect in this case. It’s not one thing.’’
    12
    In Hoyt v. 
    Danbury, supra
    , 
    69 Conn. 347
    , the plaintiff brought an action
    against the city after he fell on stairs that were built into the side of a hill
    that formed part of a municipal sidewalk. After a bench trial, the trial
    court found that the stairs were defective because they were too steep and,
    accordingly, rendered judgment for the plaintiff. 
    Id., 349–50. On
    appeal, this
    court reversed the judgment of the trial court. 
    Id., 354. The
    court reasoned that if the plan of construction were so inadequate
    that the sidewalk was ‘‘out of repair from the beginning’’—for instance, if
    the sidewalk ‘‘had been left with its grade broken simply by a four foot
    wall, without the provision of steps, or had the steps provided been insecure,
    or unguarded by a proper railing,’’ then the plaintiff might have a viable
    claim. 
    Id., 352. The
    trial court had found, however, that ‘‘the steps leading
    from one grade to the other were not defective, either in material or manner
    of construction, nor out of repair, at the time of the plaintiff’s injury.’’ 
    Id. We concluded
    that, because the stairs were properly constructed and in
    good repair, the municipality’s decision regarding the design of the walkway
    ‘‘was not subject to review by the courts.’’ Id.; see 
    id., 351 (‘‘the
    Superior Court
    had the right to determine whether [the stairs] were properly constructed and
    in good repair, but not to pronounce the walk defective because [they were]
    not built on an unbroken grade’’); 
    id., 352 (‘‘The
    use of steps in a city . . .
    sidewalk is one of several permissible means of overcoming a steep grade.
    . . . It was for the municipal authorities to decide whether it was the best
    means of constructing this particular walk; and their decision was not subject
    to review by the courts.’’ [Citation omitted.]).
    While it is true that the court in Hoyt intimated that a sidewalk ‘‘unguarded
    by a proper railing’’ might be defective by design; id.; we do not agree with
    the dissent that ‘‘[a] road with an extremely steep downhill grade that is
    traversed by large trucks, without warning signs and with no truck runoff
    is defective in the same way that a staircase with no railing is defective.’’
    Whereas § 13a-144 expressly waives sovereign immunity for injuries arising
    from the ‘‘lack of any railing or fence on the . . . part of such road which
    may be raised above the adjoining ground so as to be unsafe for travel,’’
    the statute does not similarly waive sovereign immunity for the failure to
    incorporate other safety measures, such as warning signs and a runaway
    truck ramp, into the roadway.
    In this regard, we find the court’s analysis in Hewison v. New Haven, 
    34 Conn. 136
    , 141–42 (1867), instructive: ‘‘It seems to have been a matter of
    doubt whether a bridge, or a part of the highway raised above the adjoining
    ground, although dangerous, was defective; and hence a railing was expressly
    required at such places, for the purpose of protecting the ‘safety of travelers.’
    Here then was one danger specially provided for. The legislature must have
    been aware that other dangers existed, or might exist, and yet they made
    no provision for them. What is the inference? Not only that they did not
    suppose that the language used was broad enough to embrace every possible
    danger, but also that they did not intend to make [the state] liable in cases
    not expressly provided for. We ought not therefore to extend this statute
    by construction.’’ (Emphasis in original.) Because this court has expressly
    repudiated the notion that ‘‘everything which renders a highway unsafe
    makes it defective within the meaning of [§ 13a-144]’’; 
    id., 141; we
    respectfully
    disagree with the dissent that Hoyt ‘‘stands for the proposition that a road
    may be defectively designed when it is inherently unsafe.’’
    13
    Most of the case law that the plaintiff cites in support of her claim is
    either inapposite to the issue at bar because the court did not decide whether
    the alleged defect properly invoked § 13a-144; see Filippi v. Sullivan, 
    273 Conn. 1
    , 8–11, 
    866 A.2d 599
    (2005) (resolving issue of whether motorist’s
    written notice to Commissioner of Transportation, as required by § 13a-144,
    was insufficient as matter of law); White v. 
    Burns, supra
    , 
    213 Conn. 323
    –28
    (resolving issue of whether § 13a-144 requires proof that alleged highway
    defect was sole proximate cause of plaintiff’s injuries); or it is factually
    distinguishable from the present case. See Priore v. Longo-McLean, 
    143 Conn. App. 249
    , 257, 
    70 A.3d 147
    (2013) (alleged defect was unmarked
    construction area resulting in narrow, uneven road surface with raised and
    exposed catch basin); D’Arcy v. Shugrue, 
    5 Conn. App. 12
    , 16, 
    496 A.2d 967
    (alleged defect was absence of metal beam divider along median of highway
    separating eastbound and westbound traffic), cert. denied, 
    197 Conn. 817
    ,
    
    500 A.2d 1336
    (1985); see also footnote 14 of this opinion (noting that § 13a-
    144 specifically provides for cause of action for absence of divider along
    raised highway). This authority does not warrant extended discussion in
    this opinion.
    In the dissent’s view, the allegations in the present case are similar to
    those in Filippi v. 
    Sullivan, supra
    , 
    273 Conn. 4
    –5 n.3, wherein the claimed
    defect was insufficient warning signs alerting motorists to a lane closure
    along a stretch of highway with a graded blind curve that concealed stopped
    traffic. The issue in Filippi, however, was whether the Appellate Court had
    improperly concluded that the plaintiff’s notice to the Commissioner of
    Transportation describing where the injury had occurred, as required by
    § 13a-144, was inadequate as a matter of law because it did not contain a
    reasonably definite description of the location of the injury. 
    Id., 7–8. Because
    the court in Filippi did not examine whether the allegations properly
    invoked the defective highway statute, we respectfully disagree with the
    dissent that Filippi is relevant to our analysis in the present case.
    14
    We note that § 13a-144 expressly waives sovereign immunity for injuries
    arising from the ‘‘lack of any railing or fence on the . . . part of such road
    which may be raised above the adjoining ground so as to be unsafe for
    travel . . . .’’ The statute, however, does not similarly waive sovereign
    immunity for the failure to incorporate other safety measures into the
    roadway.
    15
    To the extent the plaintiff relies on the trial court’s reasoning distinguish-
    ing McIntosh from the present case, we disagree with that analysis. In its
    memorandum of decision, the trial court reasoned as follows: ‘‘Unlike the
    rocky ledge high above the roadway in McIntosh, by contrast, which was
    not built into the roadway and was thus not an intrinsic defect in it which
    actually obstructed travel upon it or hindered its use, [the 10 percent]
    downhill grade built into the relevant section of Route 44 has been claimed
    and may be shown by the [plaintiff] to constitute such an intrinsic defect,
    which, when trucks use the roadway, creates an unacceptable risk of brake
    failure, even in trucks with working brakes, and ensuing runaways, collisions
    with other vehicles, and resulting injuries and losses.’’
    We find the trial court’s analysis misguided in light of the governing legal
    principles. This court has consistently held that ‘‘[t]he state is not an insurer
    of the safety of travelers on the highways which it has a duty to repair.
    Thus, it is not bound to make the roads absolutely safe for travel. . . .
    Rather, the test is whether or not the state has exercised reasonable care to
    make and keep such roads in a reasonably safe condition for the reasonably
    prudent traveler.’’ (Internal quotation marks omitted.) McIntosh v. 
    Sullivan, supra
    , 
    274 Conn. 269
    ; see also Hewison v. New 
    Haven, supra
    , 
    34 Conn. 141
    (‘‘[w]e are not prepared to establish the doctrine that everything which
    renders the highway unsafe makes it defective within the meaning of this
    [highway defect] act’’).
    The trial court’s observation that the downhill grade built into the roadway
    ‘‘may be shown by the [plaintiff] to constitute such an intrinsic defect, which
    . . . create[d] an unacceptable risk of brake failure’’ ignores that the defect
    must actually be in, upon, or near the roadbed so as to necessarily obstruct
    travel thereon. Indeed, as we stated in McIntosh v. 
    Sullivan, supra
    , 
    274 Conn. 289
    , ‘‘the legislature has elected to waive sovereign immunity with
    respect to the repair and maintenance of the state’s highways only when
    the defective condition is in or so near the roadway that it actually obstructs
    travel and the Commissioner of Transportation has reasonable notice
    thereof.’’
    Apart from the design of the road, that is, the steep downhill grade and
    lack of adequate safety measures, the plaintiff does not allege an actionable
    hazard in or near the road that necessarily obstructed travel thereon. Rather,
    the plaintiff claims that the state is liable for damages because it constructed
    a road across a steep mountain without certain identified safety measures
    and, in so doing, created an unreasonable risk of catastrophic brake failure.
    The plaintiff’s claim falls squarely within our analysis in McIntosh barring
    such a claim. See 
    id., 288–89 (‘‘[T]he
    highway defect statute does not give
    rise to a cause of action sounding in general negligence. . . . Although the
    rocks and debris that struck the plaintiff’s automobile in the present case
    may have posed an unreasonable danger to travelers on the road, such that
    the [defendant Commissioner of Transportation’s] failure to remove them
    arguably was negligent, any such negligence was manifestly insufficient to
    support a claim under the highway defect statute.’’ [Citation omitted.]).
    16
    The dissent is doubtful that we would reach the same decision in the
    present case had the alleged design defect been ‘‘an inherently dangerous
    30 percent slope’’ as opposed to a 10 percent slope. The issue that we must
    decide in the present case, however, does not depend on the extent of the
    downhill grade. Assuming that the downhill grade, however steep, may be
    proved by the plaintiff to present an unacceptable risk of brake failure in
    trucks, the issue we must decide is whether that alleged defect falls within
    the purview of the defective highway statute. We conclude that it does not.
    ‘‘[A] public authority acts in a quasi-judicial or legislative capacity in adopting
    a plan for the [construction] of its streets or highways and ordinarily will
    not be liable for consequential damages for injuries due to errors or defects
    in the plan adopted.’’ Donnelly v. 
    Ives, supra
    , 
    159 Conn. 168
    ; see Hoyt v.
    
    Danbury, supra
    , 
    69 Conn. 351
    (‘‘[a] defect in the plan upon which [a] highway
    [is] constructed . . . [does] not [come] within the [defective highway] stat-
    ute’’). The defendant’s decision to adopt a plan for the construction of Route
    44 across Avon Mountain, and its decision regarding the safety measures
    necessary to ensure the safety of motorists thereon, is not subject to collat-
    eral review by this court.
    17
    Aside from Perrotti, it appears that there are only two other cases in
    which this court has acknowledged a cognizable highway design defect
    claim: Bovat v. Waterbury, 
    258 Conn. 574
    , 
    783 A.2d 1001
    (2001); and Feder-
    man v. Stamford, 
    118 Conn. 427
    , 
    172 A. 853
    (1934). Like Perrotti, each of
    these cases is factually distinguishable from the present case.
    In Bovat, the plaintiff brought an action against the city of Waterbury
    under the municipal defective highway statute, General Statutes § 13a-149,
    for injuries he sustained when his car struck a utility pole that was located
    a short distance from the edge of the road. Bovat v. 
    Waterbury, supra
    , 
    258 Conn. 578
    . The plaintiff alleged that the defendant’s defective design and
    maintenance of the highway caused his injuries in that, inter alia, ‘‘the road
    was designed with an extremely sharp curve with a utility pole placed at
    the apex of the curve at the edge of the roadway, thereby creating a danger-
    ous and hazardous condition . . . .’’ 
    Id., 579. The
    jury found in favor of the
    plaintiff with respect to both the design defect and improper maintenance
    claims, and the trial court rendered judgment in accordance with the verdict.
    This court affirmed the judgment of the trial court. 
    Id., 582, 602.
       In Federman, the plaintiff brought a highway defect claim for injuries
    she sustained when a sewer manhole cover in the street became unseated
    and struck the wheels of her car, causing her to crash into a telephone pole.
    Federman v. 
    Stamford, supra
    , 
    118 Conn. 428
    . The plaintiff alleged that the
    cover was defectively designed because ‘‘the cover was lower than the
    frame, which was set flush with the street [and] it fitted so loosely in the
    frame that it was easily dislodged . . . .’’ 
    Id. The jury
    rendered a verdict
    for the plaintiff, and the trial court denied the defendant city’s motion to
    set aside the verdict. 
    Id., 430. This
    court affirmed the judgment of the trial
    court, concluding ‘‘the jury might have reasonably concluded that the cover
    created, from the moment of its installation, a condition rendering the street
    not reasonably safe for public travel and that from that moment the street
    was defective within the meaning of the statute.’’ 
    Id., 429. Bovat
    and Federman are distinguishable from the present case because
    the alleged defect in each case—the utility pole placed at the apex of the
    curve in Bovat, and the loosely fitting sewer manhole cover in Federman—
    was an object in or near the roadway that necessarily impeded travel thereon.
    In the present case, by contrast, the steep downhill grade, together with
    the absence of tangible safety measures, does not constitute an object or
    condition in or near the roadway that necessarily obstructed travel thereon.
    Accordingly, the plaintiff’s claim must fail.
    To the extent that the dissent relies upon Rusch v. Cox, 
    130 Conn. 26
    , 
    31 A.2d 457
    (1943), we find that case factually distinguishable from the present
    case. In Rusch, the plaintiff, Andrew J. Rusch, administrator of the estate
    of Frederick A. Rusch (decedent), brought an action against the highway
    commissioner after the decedent was killed when the vehicle in which he
    was a passenger struck a wooden fence along the shoulder of the road. 
    Id., 29–30. At
    the point of the collision, the wooden fence narrowed the shoulder
    from approximately eight feet to four feet in width. 
    Id., 29. The
    trial court
    concluded that the sudden and substantial change in the position of the
    fence created a dangerous condition in the highway. 
    Id., 30. On
    appeal, this
    court affirmed the trial court’s judgment. 
    Id., 36. Rusch
    is distinguishable from the present case because the wooden fence
    that was constructed so as to narrow, unexpectedly, the shoulder from eight
    to four feet constituted ‘‘[an] object in, upon, or near the traveled path,
    which would necessarily obstruct or hinder one in the use of the road for
    the purpose of traveling thereon . . . .’’ Hewison v. New 
    Haven, supra
    , 
    34 Conn. 142
    . Acknowledging Hewison, the trial court determined that the
    fence narrowing the shoulder constituted a condition near the road that
    rendered public travel thereon not reasonably safe. See Rusch v. Cox, 
    10 Conn. Supp. 521
    , 526 (1942) (‘‘the highway was not reasonably safe . . . .
    [because] the layout was such as almost to amount to a trap for those, who
    in the night season, might drive upon the shoulder for emergency use’’). No
    such condition existed in the present case. The dissent claims that Rusch
    is analogous to the present case because ‘‘[i]n both instances, the injury
    arose simply from the way in which the road was designed, not from some
    other condition or obstacle on the road itself.’’ In Rusch, however, the
    defectively designed fence was itself an object that obstructed travel and,
    thus, it was an actionable defect despite the fact that the defect inhered in
    the highway’s plan of design. In the present case, by contrast, the downhill
    slope in the absence of warning signs pertains solely to the design of the road.
    18
    In Donnelly v. 
    Ives, supra
    , 
    159 Conn. 165
    , the plaintiff brought an action
    for damages against the highway commissioner after her automobile struck
    a concrete abutment located along an exit ramp of a state highway. She
    alleged that the highway was defectively designed due to, inter alia, ‘‘inade-
    quate warning devices or signs . . . a poorly designed narrowing of the
    highway . . . [and] inadequate visibility of the abutment due to the curve
    in the highway . . . .’’ 
    Id., 165 n.2.
    In examining whether the plaintiff’s
    complaint and evidence supported a cause of action under the defective
    highway statute, this court declined the plaintiff’s invitation to ‘‘adopt a
    simple rule that liability be imposed upon the highway commissioner for a
    [highway] design defect . . . resulting from the [highway’s] layout and sign-
    ing.’’ (Internal quotation marks omitted.) 
    Id., 168. Instead,
    the court reiter-
    ated the principle that the highway commissioner’s decision in adopting a
    plan of design for a highway is not subject to collateral review by this court;
    id.; and that conflicting expert opinions are insufficient to establish the
    highway commissioner’s failure to discharge its duty to ‘‘exercise reasonable
    care to make and keep [its] roads in a reasonably safe condition for the
    reasonably prudent traveler.’’ 
    Id., 167. 19
          At oral argument before this court, even the plaintiff agreed that poten-
    tially any design defect claim would be actionable under her theory:
    ‘‘The Court: What design defect that applies directly to the road; a hairpin
    turn, an exit ramp that is too close to the entrance ramp coming the other
    way; what kind of design defect would not be actionable [under your theory]
    when [it] pertains directly to the road?
    ‘‘The Plaintiff’s Counsel: Maybe none, Your Honor.’’