I-70 Construction Zone Accidents in Missouri: Who's Liable?

If you were injured in a crash in an I-70 construction zone, the party most often liable is another driver — but not always. Depending on what actually caused the wreck, liability can also reach the contractor running the work zone, a trucking company whose tractor trailer was following too closely, or in narrower circumstances the Missouri Highways and Transportation Commission itself. This guide walks through each of those, explains what makes construction on the interstate so dangerous right now, and is straight with you about which claims are realistic and which are hard.

It is written for people who have been hurt on I-70 in Missouri and are trying to figure out who to hold responsible. It matters because work zone cases are not ordinary car accident cases. Evidence disappears fast, more than one party is usually involved, and if a state agency is on the hook there are rules and damage caps that do not apply anywhere else in Missouri injury law.

If you were injured and want an answer specific to your crash, contact Bur Oak Injury Law for a free consultation. No fee unless we win.

Why I-70 construction projects have made this stretch so dangerous

The Improve I-70 program is the largest road project in Missouri history — roughly 200 miles of interstate and $2.8 billion in state general revenue. The Missouri Department of Transportation has split the corridor into eight construction segments running from Blue Springs, near Adams Dairy Parkway in the Kansas City area, all the way east to Wentzville. Three of those segments are already in progress: Blue Springs to Odessa, Columbia to Kingdom City, and Warrenton to Wentzville. The rest — through Concordia, Boonville, Rocheport, and Warrenton — are in planning or awaiting award, with contracts running through 2029 and the corridor not expected to be complete until the end of 2030. If you drive this corridor daily, it is worth knowing which stretches are where crashes actually happen and why.

The Columbia to Kingdom City segment alone is a $426 million, 20-mile rebuild running from U.S. 63 in Columbia to U.S. 54 in Kingdom City, through Boone and Callaway counties. Millstone Weber holds the design-build contract, crews began work in the summer of 2024, and completion is expected in late 2027. In that stretch, drivers are living with new concrete pavement being poured a lane at a time, redesigned interchanges, ongoing ramp closures, and lane shifts that move week to week. MoDOT's commitment is two lanes of travel in each direction during peak hours — which tells you plainly that outside peak hours, there may be only one.

Statewide, the picture is the same. Jon Nelson, Missouri's State Highway Safety and Traffic Engineer, put it directly: on any given day this construction season, the state expects as many as 1,000 active work zones on Missouri roadways. And MoDOT's own work zone data shows what that costs. In 2025, 24 people were killed in Missouri work zone crashes. Twelve of those fatalities involved distracted driving, and 437 work zone crashes involved a driver who was not paying attention. MoDOT protective vehicles — the trucks designed to absorb a hit before it reaches the crews — were struck 50 times in 2025, up from 34 the year before. Nationally, the Work Zone Safety Information Clearinghouse tracks the same pattern: the people most often killed in work zone crashes are the drivers and passengers passing through, not the crews.

Causes of accidents in I-70 construction zones

Tight lanes, shifted barriers, and no shoulder

A normal interstate lane gives you room to correct. A work zone lane on I-70 often does not. Lanes get narrowed, traffic gets shifted onto a temporary alignment, and the shoulder — the escape route you rely on without thinking about it — is gone, replaced by a concrete barrier a few feet off your mirror. When something happens ahead of you, there is nowhere to go. A minor error that would be a near-miss on open highway becomes a collision here.

Lane shifts are also where drivers get caught out. A configuration that was there on your Monday commute may be somewhere else by Friday. If you drive the same stretch every day, you are running on muscle memory, and muscle memory is exactly what a shifted work zone defeats.

Semis and tractor trailers in the work zone

I-70 is a freight corridor first and a commuter route second. A loaded tractor trailer needs far more stopping distance than a car, and the driver behind the wheel is often on a schedule that a slow work zone is wrecking. Impatient semis riding the bumper of the vehicle in front of them, or trying to squeeze a lane change into a gap that is not there, cause some of the worst injuries we see on this corridor. When two vehicles collide and one of them weighs 80,000 pounds, the physics are not a fair fight.

Commercial cases also open doors an ordinary crash does not. The trucking company may be liable for the driver's conduct, for negligent hiring, or for hours-of-service violations. Electronic logging data, dashcam footage, and maintenance records all exist — but they exist on the company's servers, and they do not stay there forever.

Construction debris and unsecured loads

Active work zones generate material: gravel, chunks of broken pavement, scattered cones, equipment. Some of it comes off a work truck. Some of it comes off a passing vehicle whose load was never properly secured. Either way, a piece of debris on the road at highway speed can cause a tire failure, crack a windshield, or force the driver behind it into an evasive move with no shoulder to move into. Debris cases are winnable, but they turn on proving where the material came from — which is a question of evidence, gathered fast.

Speeding and distracted driving through the work zone

Speeding is involved in about 11% of Missouri work zone crashes. Distraction is involved in far more. The Missouri State Highway Patrol and MoDOT both monitor this corridor closely, and KC Scout cameras cover the Kansas City end of it, but no amount of monitoring changes the basic problem: people drive a 45 mph work zone at 70 because they are late and the crews are not visibly working at that moment. A seat belt matters here too — 62% of vehicle occupants killed in Missouri work zones were not wearing one.

Who can be held liable for an I-70 work zone crash

The other driver

This is the most common answer by a wide margin. If another motorist was speeding, following too closely, changing lanes without looking, or looking at a phone, that driver is liable and their insurance carrier is the party you are dealing with. Missouri is a pure comparative fault state, which means your own recovery is reduced by whatever percentage of fault is assigned to you — and it also means the other side's insurer will work hard to assign you some. Our guide to how fault is determined in a Missouri car accident covers how that fight actually plays out.

The construction contractor

Contractors on Improve I-70 segments work under approved traffic control plans that dictate where signs go, how far in advance warnings appear, how lanes taper, where barriers sit, and how equipment is stored overnight. When crews deviate from that plan — a sign that was never set out, a taper that is too short, equipment left inside the clear zone, debris not swept — the contractor can be liable for the resulting crash. These are ordinary negligence claims against a private company, and they are not blocked by sovereign immunity. In practice, contractor claims are often the strongest path when the work zone itself, rather than a driver, caused the wreck. The same traffic control failures that hurt drivers also hurt the crews working inside the zone, which is why construction worker injury claims on these projects often run on parallel facts.

A 2026 change, and an open question about it. Effective August 28, 2026, the legislature amended RSMo § 537.600 to give MoDOT's private contractors a measure of immunity. Under the new law, for claims arising from the design, condition, or maintenance of a MoDOT project in two specific windows — after a contract is signed but before crews begin work, and after MoDOT has formally approved and accepted the finished work — the claim against the contractor is abolished and the department alone is liable, subject to the caps discussed below. Four exceptions keep the contractor in the case, including work so defective it creates an imminent danger and a dangerous condition the contractor knew about and did not disclose.

Two points matter for anyone hurt on I-70 right now. First, those windows do not reach an active work zone. The front one closes the moment the contractor starts furnishing labor, material, or equipment; the back one does not open until final inspection is complete and twenty business days have run. Everything in between — the barrels, the lane shifts, the crews, the entire period this article is about — is untouched, and an ordinary uncapped claim against the contractor still exists. Second, we do not think a statute reassigning liability erases a contractor's own duty to supervise its work, and we do not read it as excusing a company that knew its site was unsafe.

Whether the new provisions survive is an open question. Taking away a person's existing right to sue the party that actually injured him, and replacing it with a claim against a state agency that is capped at a fraction of the loss, raises real issues under the Missouri Constitution — among them the guarantee in Article I, Section 14 that the courts shall be open to every person and that a certain remedy be afforded for every injury. As of this writing no Missouri court has ruled on it. If your crash traces to work that was already finished and accepted, or to a project that had not broken ground, do not assume the contractor is out of the case.

The Missouri Highways and Transportation Commission

MHTC is the body that holds MoDOT's legal liability. Suing it is possible but hard, and the next section explains exactly why. The short version: the state is immune unless your claim fits one of two specific statutory exceptions, and even if it does, your recovery is capped. The same 2026 amendment noted above also folds MoDOT's contractors into those exceptions, so a contractor employee's negligent driving or a contractor-created dangerous condition can now reach MHTC directly — additional exposure for the state, but capped.

Suing the state: MHTC and sovereign immunity

Missouri, like most states, starts from the position that you cannot sue it. RSMo § 537.600 preserves sovereign immunity for public entities and then waives it in exactly two situations: injuries arising from the negligent operation of a motor vehicle by a public employee in the course of employment, and injuries caused by a dangerous condition of public property.

The first door is narrow but clean. If a MoDOT vehicle hit you, that is the negligent-operation waiver and the claim proceeds much like an ordinary auto case.

The second door is where most work zone claims against MHTC live, and it has four elements you have to prove: that the property was in a dangerous condition at the time of the injury; that your injury directly resulted from that condition; that the condition created a reasonably foreseeable risk of the kind of harm you suffered; and that either a public employee's negligent act created the condition, or the entity had actual or constructive notice of it in time to take protective measures.

That fourth element is where these cases are usually decided. It is not enough that a hazard existed — the state has to have known about it, or the hazard has to have been obvious long enough that the state should have known. A pothole that opened up overnight is a different case from one that has been reported for months. There is also a complete defense available where the property was designed and constructed before September 12, 1977 and reasonably complied with the design standards accepted at that time.

The damage caps are real

RSMo § 537.610 caps what the state can be made to pay. The figures written into the statute — $300,000 per claimant and $2,000,000 for all claims arising out of a single occurrence — are the original numbers, and they are not what applies to your case. The statute directs that the limitation be increased or decreased every year effective January 1 using the Implicit Price Deflator for Personal Consumption Expenditures, with the current value calculated by the director of the Department of Commerce and Insurance and published in the Missouri Register. Decades of those adjustments have stacked up. As of this writing on July 28, 2026, the department has set the limits at $532,148 for any one person and $3,547,658 for all claims arising out of a single occurrence — roughly one and three quarters times the numbers printed in the statute. Those figures change every January, and the cap that governs is the one in effect on your date of injury, so if you were hurt in an earlier year, look up that year rather than this one. For 2025 it was $517,306 per person. If you are reading this in a later year, the numbers above are out of date — check the department’s current table.

What the caps mean in practice is worth being blunt about. In one Missouri Court of Appeals case involving MHTC, the cap that applied in that year came out to $409,123. The court held that the dangerous-condition waiver is absolute regardless of whether the agency carried insurance — and then all six plaintiffs had to share that single capped amount among them. That is the part people miss. The per-person figure is not a per-person guarantee; when several people are hurt in the same occurrence, the per-occurrence limit and the apportionment rules decide how the money gets divided, and a circuit court can be asked to apportion it. A catastrophic injury or a multi-vehicle crash can exhaust the cap before you have finished adding up the medical bills.

So here is the honest assessment. Claims against MHTC are difficult, slow, capped, and turn on a notice element that is genuinely hard to prove. They are worth pursuing when the work zone itself was the cause and the state knew about the problem. But in the large majority of I-70 construction zone accidents, the better claim runs against the driver who hit you or the contractor who set up the lanes — and a good investigation identifies which of those it is before anyone files anything.

Missouri work zone traffic laws that affect your claim

Two statutes come up constantly in these cases, both because they establish what the other driver was legally required to do and because a citation under either one is useful evidence.

Work zone violations — RSMo § 304.582. A first conviction for a general moving violation in an active work zone adds $35 to the penalty. If the violation was speeding or improper passing while workers were present, the addition is $250, rising to $300 for a second or subsequent conviction. Improper passing in a work zone is a class C misdemeanor. The enhanced fines apply only where signs are clearly visible warning of the minimum $250 fine, and the statute specifies that these additional fines do not enhance court costs or the assessment of points against a driving record. If you are curious how points work generally, see our post on the Missouri driving record points system.

The Siddens Bening Hands Free Law — RSMo § 304.822. Missouri now prohibits holding or supporting a phone while driving, texting, non-hands-free calls, watching video, and manual data entry. Fines run $150, then $250 for a second offense within 24 months, then $500 for a third. In a work zone when workers are present — or in a school zone — the fine can reach $500 outright. If the distracted driving causes property damage over $5,000 it is a class D misdemeanor, serious injury is a class B misdemeanor, and a death is a class D felony. Enforcement moved past warnings on January 1, 2025, which means citations under this statute are now real and are showing up in crash reports.

What to do after an I-70 work zone crash

1. 1
   Get to safety and call 911

   A disabled vehicle in a work zone with no shoulder is a second crash waiting to happen. If your car is drivable and there is a gap in the barrier, get out of the live lanes. If it is not, stay belted inside with hazards on rather than standing in traffic. First responders on I-70 are often coming from a distance and working around blocked lanes, so give the dispatcher your direction of travel and the nearest exit or mile marker.

2. 2
   Get the crash investigated by the Missouri State Highway Patrol

   On the interstate, the Highway Patrol is typically the investigating agency. Their report will identify the vehicles, drivers, and any citations issued. Get the report number before you leave the scene. If you are transported for treatment and cannot, the report can be requested from the Patrol afterward — but knowing the number saves time.

3. 3
   Photograph the work zone, not just the vehicles

   This is the step people skip and the one that matters most in a construction zone case. Photograph the lane width, the barrier position, where the cones and signs actually were, any debris on the pavement, the taper you came through, and how far in advance the warning signs appeared. Photograph in both directions. This configuration will be gone within weeks and there is no way to recreate it later.

4. 4
   Get medical attention the same day

   Injuries that feel minor at the scene — neck stiffness, headaches, a sore shoulder — routinely turn out to be more than that once the adrenaline clears. A gap between the crash and your first treatment is the single easiest thing for an insurance adjuster to use against you. Go the same day, describe every symptom, and follow through on the referrals.

5. 5
   Do not give a recorded statement before you have talked to a lawyer

   The other driver's insurer will call quickly and will sound helpful. The recorded statement is not a formality; it is an opportunity for you to say something that gets used to shift fault onto you. You are not required to give one. Decline politely and get advice first.

6. 6
   Call an attorney while the evidence still exists

   Traffic control plans, contractor daily logs, MoDOT lane closure records, KC Scout and traffic camera footage, and commercial vehicle data all exist right now and are all subject to retention limits. A preservation letter sent in the first weeks after a crash is often the difference between proving a work zone claim and having a theory you cannot support. Contact Bur Oak Injury Law — the consultation is free and there is no fee unless we win.

Work zone crashes on this corridor are going to keep happening as long as the project continues, and the construction is going to continue for years. If you were hurt in one, you are dealing with an insurance company that handles these routinely and knows exactly how fast the scene changes. Start with our guide to what to do after a car accident in Missouri, read up on the most common causes of Missouri car accidents, and if you want to know what a claim like yours is realistically worth, see what your personal injury case is worth. When you are ready to talk to someone, our personal injury practice handles these cases across central Missouri.

This article was written on July 28, 2026 and states Missouri law, MoDOT project schedules, and sovereign immunity limits as they stood on that date. The damage caps are recalculated every January 1, and the 2026 amendments to RSMo §§ 537.600 and 537.610 do not take effect until August 28, 2026. If you are reading this later, confirm the current figures before relying on them.