The Dan Ryan, the Kennedy, the Eisenhower, Lake Shore Drive: Chicago’s expressways move hundreds of thousands of vehicles a day at speeds that turn a moment’s inattention into a multi-car pileup. Expressway crashes are different from ordinary street collisions in almost every way that matters to a claim, higher speeds mean more severe injuries, multiple vehicles mean more potential defendants and more disputed fault, and depending on which road it happened on, the government entity responsible for maintaining that stretch of highway can completely change the legal deadlines involved.
This guide covers how liability gets sorted out in a high-speed expressway crash, what’s different about a case involving a state highway versus the Illinois Tollway, and how construction-zone crashes add another layer of potential liability.
Who Maintains What: Why It Matters for Your Claim
Not all Chicago-area expressways are maintained, or legally treated, the same way, and getting this wrong at the outset can cost a claimant critical time.
State highways (IDOT jurisdiction)
The Dan Ryan (I-90/94), the Kennedy (I-90/94), and the Eisenhower (I-290) are all part of the Interstate Highway System maintained by the Illinois Department of Transportation, a state agency. A claim against the State of Illinois for a road-condition-related crash, a pothole, inadequate signage, a defective guardrail, doesn’t go through an ordinary Cook County circuit court lawsuit. It’s filed in the Illinois Court of Claims under the Court of Claims Act, 705 ILCS 505, which has its own strict notice and filing procedures, no jury, and, notably, a statutory damages cap of $100,000 in many negligence claims against the state. This is a fundamentally different process from suing a private driver.
The Illinois Tollway
Toll roads like the Jane Addams Memorial Tollway (I-90) and the Tri-State Tollway (I-294) are operated by the Illinois State Toll Highway Authority, a separate entity from IDOT. Unlike claims against the State itself, the Tollway Authority has historically been treated as outside the general sovereign immunity umbrella that funnels claims into the Court of Claims, a distinction rooted in the Authority’s financially independent structure. This means claims involving Tollway maintenance issues can, in many circumstances, proceed in regular circuit court rather than the Court of Claims, though the analysis is fact-specific and worth confirming for any particular stretch of road.
City streets and boulevards
Lake Shore Drive, despite functioning like an expressway for much of its length, is a Chicago city street maintained by the Chicago Department of Transportation, not IDOT. A claim against the City of Chicago for a road-condition issue on Lake Shore Drive falls under the Local Governmental and Governmental Employees Tort Immunity Act, 745 ILCS 10, which imposes its own one-year notice and filing deadline, separate from both the Court of Claims process and the CTA’s own dedicated statute.
None of this affects a standard negligence claim against another driver who caused the crash, that still follows Illinois’s ordinary two-year statute of limitations under 735 ILCS 5/13-202. It matters specifically when the road itself, a defect, a design flaw, inadequate maintenance, or a construction zone hazard, is part of what caused or worsened the crash. And it’s rarely obvious at a glance which entity maintains a given stretch of pavement; a driver who assumes every Chicago-area highway is treated the same way for legal purposes risks missing a much shorter deadline than the one they were expecting.
High-Speed Multi-Vehicle Pileups: Sorting Out Fault
A chain-reaction crash involving five, ten, or more vehicles on an expressway presents a genuinely harder liability puzzle than a simple two-car collision. Illinois courts generally analyze each impact in a chain-reaction crash individually: the driver who caused the initial collision may bear primary responsibility, but a driver who was following too closely and couldn’t stop in time for the resulting pileup, in violation of Illinois’s following-too-closely statute, 625 ILCS 5/11-710, can bear independent fault for their own portion of the harm. Weather conditions, sudden fog, black ice, heavy rain, don’t excuse a driver from Illinois’s basic speed law, codified at 625 ILCS 5/11-601, which requires speed to be reduced to a safe level given actual road and visibility conditions, not just the posted limit.
Reconstructing exactly what happened in a multi-vehicle pileup often requires accident reconstruction expertise, review of any available traffic camera or dash camera footage, and careful analysis of vehicle damage patterns to establish the actual sequence of impacts, since insurers for later-arriving vehicles in the chain will often try to attribute all responsibility to the first collision to minimize their own client’s exposure.
Construction Zone Liability
Expressway construction and maintenance zones introduce their own distinct set of legal considerations. Illinois law sets specific, enhanced speed limit enforcement in posted construction and maintenance zones under 625 ILCS 5/11-605.1, with minimum fines starting at $250 for a first violation and $750 for a second. Beyond driver conduct, liability in a work-zone crash can also extend to the construction contractor if inadequate signage, improper lane closures, missing barriers, or a failure to follow the required traffic control plan contributed to the crash, a claim that runs alongside, not instead of, any claim against a negligent driver.
Illinois’s Scott’s Law, 625 ILCS 5/11-907(c), deserves particular mention for expressway work zones. It requires drivers to move over or slow down for any stationary vehicle displaying hazard lights, including maintenance and construction vehicles, not just police and emergency vehicles. The law is named for Chicago firefighter Lieutenant Scott Gillen, who was struck and killed on the shoulder of the Dan Ryan Expressway in 2000 while assisting at an accident scene. A driver’s failure to move over or slow down for a stopped maintenance vehicle or a previous crash scene is both a traffic violation and strong evidence of negligence in a resulting collision claim.
Why Expressway Injuries Tend to Be More Severe
Speed is the single biggest variable separating expressway crashes from ordinary street collisions, and the relationship between speed and injury severity isn’t linear, it accelerates. Crash forces increase with the square of speed, which means a collision at 65 mph involves dramatically more kinetic energy than one at 35 mph, not just roughly double. This is a large part of why expressway crashes produce a disproportionate share of the traumatic brain injuries, spinal injuries, and fatalities that appear in Chicago-area crash claims compared to lower-speed arterial road collisions. It also means that even a claimant who seems to have walked away from an expressway crash with only soft-tissue injuries should be evaluated carefully for injuries that don’t announce themselves immediately, since the forces involved are substantial regardless of how the crash initially appears.
Evidence Collection Specific to Expressway Crashes
Beyond the standard evidence gathering that applies to any car accident, expressway crashes have some evidence sources worth flagging specifically. IDOT and the Illinois Tollway both operate traffic camera networks along major expressways, primarily for congestion monitoring, and footage from these systems can sometimes be obtained through a public records request, though retention windows vary and can be short. Illinois State Police, which has primary jurisdiction over crashes on Interstate highways within Chicago rather than Chicago Police Department, generates its own crash report with an investigating trooper’s observations, which becomes an important piece of documentation distinct from a municipal police report. In multi-vehicle pileups specifically, the position of each vehicle’s final resting place, damage patterns showing the direction and sequence of impacts, and any electronic data recorder (“black box”) information from the vehicles involved all become significant in reconstructing what actually happened.
Insurance Considerations in High-Speed Crashes
Because expressway crashes tend to produce more severe injuries, the gap between Illinois’s minimum liability insurance requirements (25/50/20) and what a serious injury actually costs shows up here more often than in typical fender-bender claims. A multi-vehicle pileup can also mean multiple at-fault drivers, each carrying their own separate policy limits, which sometimes allows a claimant to recover from more than one source rather than being capped by a single driver’s coverage. Identifying every potentially liable driver in a chain-reaction crash, not just the one who happened to hit your vehicle directly, is part of maximizing what coverage is actually available.
Hypothetical Example: A Five-Car Chain Reaction
The following is a hypothetical scenario for illustration only, not a description of a real case or client.
Imagine sudden heavy fog rolls across the Eisenhower Expressway during a morning commute. A driver traveling well under the posted limit but too fast for the actual visibility rear-ends a slowed vehicle ahead. Three more vehicles pile into the resulting stopped traffic in the next several seconds, the last one following so closely that the driver never had a realistic chance to stop even at a reasonable speed. An accident reconstruction analysis in this scenario might find the first driver primarily at fault for violating Illinois’s basic speed law given the fog, while the last driver bears independent, additional fault for following too closely, illustrating why a five-car pileup rarely reduces to a single at-fault party.
For more on how fault gets established more broadly in Chicago crashes, see our guide to Chicago car accident FAQs, and for construction-related crashes specifically, see our guide on questions to ask a Chicago work-zone accident lawyer. For how settlement value is calculated once fault is established, see our guide to Illinois car accident settlement value factors.
Frequently Asked Questions
Do I sue the state if a pothole on the Dan Ryan caused my crash?
Potentially, but that claim goes through the Illinois Court of Claims rather than a standard circuit court lawsuit, since the Dan Ryan is IDOT-maintained. This process has its own strict notice requirements and a statutory damages cap in many negligence cases, so it should be evaluated separately from any claim against another driver.
Is a Tollway crash claim different from an IDOT highway crash claim?
It can be. The Illinois State Toll Highway Authority has historically been treated differently from the state’s general sovereign immunity framework, which can allow certain claims to proceed in regular circuit court rather than the Court of Claims, though this depends on the specific facts involved.
Who is at fault in a multi-car pileup?
Often more than one driver. Illinois courts typically analyze each collision in a chain-reaction crash individually, and a driver who was following too closely or driving too fast for conditions can bear independent fault even if they weren’t the first vehicle involved.
What if a construction zone contributed to my crash?
Depending on the facts, the construction contractor responsible for signage, lane closures, and traffic control could share liability alongside any negligent driver, particularly if required safety measures under the project’s traffic control plan weren’t followed.
What is Scott’s Law and how does it affect a claim?
Scott’s Law requires drivers to move over or slow down for any stopped vehicle with hazard lights on, including maintenance and construction vehicles. A driver’s violation of Scott’s Law in causing a crash is strong evidence of negligence in the resulting claim.
Does Illinois State Police or Chicago Police investigate expressway crashes?
Illinois State Police typically has primary jurisdiction over crashes on Interstate highways within Chicago, including the Dan Ryan, Kennedy, and Eisenhower, which is different from a standard city-street crash investigated by Chicago Police. Knowing which agency generated the crash report matters for obtaining the correct documentation.
How long do I have to file a claim against IDOT for a road defect?
Claims against the State of Illinois through the Court of Claims have their own strict notice and filing requirements that are considerably less forgiving than the standard two-year deadline for suing a private driver. Given how unforgiving these deadlines can be, getting legal advice quickly after any expressway crash involving a possible road defect is important.
If You Were Injured in a Chicago Expressway Crash
Expressway crashes involve higher speeds, more potential defendants, and sometimes government agencies with their own specialized claims processes. Phillips Law Offices can help sort out who’s actually liable and make sure every deadline, including the shorter ones that apply to government entities, is met. Call (312) 346-4262 for a free case review.