Highway Accident in St. Louis: Your Rights After an Interstate Crash

Highway accidents are dangerous not just in the initial crash but in the minutes afterward. Secondary crashes — where other vehicles hit disabled cars or people standing on the highway — account for a significant percentage of highway fatalities. If your vehicle is drivable, pull to the right shoulder or a safe area. Turn on your hazard lights. If you cannot move your vehicle, stay inside with your seatbelt on unless there is an immediate danger like fire or smoke.

Call 911 immediately. On St. Louis interstates, the Missouri State Highway Patrol typically responds, though SLMPD or St. Louis County Police may respond to crashes on highway sections within their jurisdiction. Tell the dispatcher your location as precisely as possible — use mile markers, exit numbers, or highway direction (I-70 eastbound near the I-270 interchange, I-64 westbound past the Kingshighway exit). If you are unsure of your exact location, describe nearby landmarks or check your phone's GPS.

Do not walk on the highway to inspect damage or exchange information until it is safe. Other motorists may not see you. If the crash is blocking traffic, stay behind the guardrail or on the shoulder. Wait for police or emergency responders to secure the scene before moving around the vehicles.

Once it is safe, photograph everything. Highway crash scenes are large — capture wide shots showing the road, lane markings, debris field, and the positions of all vehicles involved. Take close-ups of damage to each vehicle, skid marks, gouge marks on the pavement, and any road defects (potholes, uneven pavement, missing guardrails). Photograph the speed limit signs, any construction zone signs, and traffic conditions.

Get witness information. Other drivers who stopped, passengers in nearby vehicles, and people who saw the crash from overpasses or frontage roads can provide critical testimony. On busy St. Louis interstates, witnesses are often available but may leave quickly. Ask for names and phone numbers immediately. If a commercial truck was involved, photograph the truck's DOT number, company name, license plate, and any visible damage.

Note the weather and road conditions. Missouri interstates are particularly dangerous during winter weather — I-70 and I-55 see frequent ice and snow-related pileups. Rain on the Poplar Street Bridge creates slick conditions. Construction zones on I-64, I-44, and I-270 frequently change lane patterns and reduce speeds. All of these conditions are relevant to determining fault.

Highway accidents often involve multiple contributing factors and potentially multiple at-fault parties. Common causes on St. Louis interstates include speeding (especially on the I-270 loop and I-44), tailgating in stop-and-go traffic on I-70 and I-64, unsafe lane changes, distracted driving, impaired driving, and road design or maintenance issues. Each factor points to a different liable party.

Missouri's pure comparative fault rule (Mo. Rev. Stat. §537.765) is particularly important in highway accidents because fault is rarely 100% one-sided. Maybe you were going 5 mph over the limit when someone cut you off. Maybe you changed lanes without fully checking your blind spot. In most states, being partially at fault could bar your recovery entirely. In Missouri, your damages are reduced by your fault percentage but never eliminated. If you are 30% at fault and your damages total $200,000, you recover $140,000.

Multiple defendants may share liability. The other driver may be at fault for speeding or distraction. A trucking company may be liable for driver fatigue violations. MoDOT may be responsible for road defects, missing signage, or inadequate construction zone safety. A vehicle manufacturer may be liable for tire blowouts, brake failures, or other mechanical defects. Each liable party's insurer contributes to your recovery proportionally.

Highway crashes at high speeds cause severe injuries that often require emergency room care. Common highway accident injuries include traumatic brain injuries (TBI), spinal cord injuries and paralysis, multiple fractures, internal organ damage, severe lacerations, and crush injuries. Ambulances from St. Louis City and County respond to highway crashes and transport to the nearest appropriate facility.

St. Louis has two Level I trauma centers equipped to handle the most severe highway crash injuries: Barnes-Jewish Hospital (BJC) in the Central West End and SSM Health St. Louis University Hospital in Midtown. These facilities have 24/7 trauma surgery, neurosurgery, orthopedic surgery, and intensive care capabilities. For highway crashes in West County or South County, Mercy Hospital St. Louis also provides advanced trauma care.

Even if you walked away from the crash feeling relatively okay, see a doctor within 24 hours. Adrenaline masks pain. Internal bleeding, hairline fractures, and concussions can have delayed symptoms. The initial medical evaluation creates a record linking your injuries to the highway crash — this documentation is essential for your insurance claim and any future lawsuit.

Highway crash investigations require specialized evidence. MoDOT operates traffic cameras on I-70, I-64, I-55, I-44, I-270, and I-170 throughout the St. Louis metro area. This footage can show the crash as it happened, the positions of vehicles before impact, and traffic flow. Request footage through the police investigation or through a formal records request to MoDOT — footage may be overwritten within days.

The Missouri State Highway Patrol creates detailed crash reports for highway accidents, including diagrams of vehicle positions, measurements of skid marks, and contributing factor analysis. Request a copy of the crash report as soon as it is available. For serious crashes, the Highway Patrol may conduct an accident reconstruction — a technical analysis of speed, impact forces, and vehicle movements that can be powerful evidence in your claim.

If a commercial truck was involved, federal regulations require trucking companies to preserve electronic logging device (ELD) data, vehicle maintenance records, and driver qualification files after a crash. An attorney can send a spoliation letter demanding preservation of these records before the trucking company destroys or overwrites them.

Highway accidents with serious injuries often involve large claims — six and seven figures for traumatic brain injuries, spinal cord damage, or permanent disability. Insurance companies respond to large claims with aggressive defense tactics: hiring their own accident reconstructionists, surveilling you for evidence that your injuries are exaggerated, and delaying settlement to pressure you into accepting less.

Missouri's 5-year statute of limitations (Mo. Rev. Stat. §516.120) gives you time, but do not wait. Highway evidence is perishable. MoDOT camera footage, ELD data, and physical evidence at the crash scene disappear quickly. Witnesses' memories fade. An attorney experienced in highway accident cases can begin investigation immediately, preserve critical evidence, and deal with multiple insurance companies on your behalf.

Want to understand your options after a highway accident in St. Louis? Take our free 2-minute assessment. We will evaluate your case, identify all potentially liable parties, and connect you with a St. Louis-area attorney experienced in highway accident claims. The assessment is free, confidential, and takes about two minutes.