Rollover, T-bone, and head-on crash hotspots in the St. Louis area

Most fender benders leave you shaken but intact. The crashes that put people in the hospital or the morgue tend to fall into three shapes: the T-bone at an intersection, the rollover on an open stretch of road, and the head-on when a car ends up pointed the wrong way. St. Louis sees all three, and the data shows where.

Across the eight-county St. Louis region (five Missouri counties plus the Illinois Metro East), there were 349,528 reported crashes from 2018 through 2022, roughly 200 a day, according to the East-West Gateway Council of Governments, the region's federally designated planning agency.¹ About 302 of those crashes each year were fatal.¹ St. Louis County accounts for around 41% of the region's crashes and the City of St. Louis about 21%.¹ Statewide, Missouri recorded 955 traffic deaths in 2024, with a preliminary 909 in 2025.²

T-bone crashes and the intersections that produce them

A T-bone, or right-angle crash, happens when the front of one vehicle slams into the side of another, usually because someone ran a red light or failed to yield. There's no crumple zone protecting the door, so these wrecks hurt people badly. Nationally, more than half of all fatal and injury crashes happen at or near intersections, the Federal Highway Administration reports.³

The worst single example in recent St. Louis memory sits at South Grand Boulevard and Forest Park Avenue. In the early morning of February 26, 2023, a driver weaving around stopped traffic ran the red light and hit an SUV carrying eight young people. The SUV flipped over a guardrail and fell to the road below. Four of them, ages 18 to 20, were killed, and the driver later pleaded guilty to four counts of involuntary manslaughter.⁴ That crash was a T-bone and a rollover at once.

East-West Gateway's crash mapping points to the same kinds of places. The intersection of Lewis and Clark Boulevard and Jennings Station Road recorded more traffic deaths than any other in the region from 2018 through 2022.¹ West Florissant Avenue between Acme and Emerson avenues, a corridor under three miles long, saw nine people killed and 34 seriously hurt over that same window, the deadliest short corridor in the region.¹ Trailnet's 2025 street-safety report ranks Gravois Avenue as the deadliest corridor in the city and Grand Boulevard second, with Lindbergh Boulevard and Chambers Road at the top of the list in St. Louis County.⁵ Speed is the common thread: speeding factored into 30% of the region's fatal and serious-injury crashes.¹

In the rural parts of the region, Missouri's fix for the intersection T-bone is the J-turn, which removes the left-turn-across-traffic movement on divided highways. MoDOT reports crashes down 25% and fatalities down 88% at J-turn locations.⁶

Rollovers

A rollover is the crash type most likely to kill the people inside. Rollovers accounted for 28% of passenger-vehicle occupant deaths nationally in 2023, even though they make up a small share of crashes overall, according to NHTSA.⁷ Vehicle shape matters. Rollovers were involved in 38% of pickup occupant deaths and 33% of SUV occupant deaths, against 20% for cars.⁷ Most fatal rollovers are single-vehicle wrecks, and they concentrate on higher-speed roads.⁸

For the St. Louis area that means the two-lane routes and interstate ramps in the outer counties, where a driver who drifts onto a soft shoulder or takes a curve too fast can trip and roll. MoDOT has leaned on two cheap fixes here. High-friction surface treatment on curves has cut run-off-the-road crashes by about 20%, and rumble strips on rural highways have dropped severe crashes by roughly 30%.⁶ The Grand Boulevard wreck is a reminder that rollovers aren't only a rural problem. Enough speed and a guardrail will flip an SUV in the middle of the city.

Head-on and wrong-way crashes

Head-on crashes are rare but brutal, because the two vehicles' speeds add together at impact. In the metro they come in two forms. On the downtown interstates, I-44, I-64, and I-70, wrong-way drivers, often impaired, enter against traffic and hit oncoming cars. On the divided rural highways in the outer counties, a vehicle that crosses the grass median can strike traffic coming the other way.

Missouri's main defense against the median-crossover head-on is guard cable, the steel rope strung down the center of many interstates and expressways. MoDOT credits it with sharply reducing cross-median crashes, which are often fatal.⁶ Freight volume raises the stakes on I-270, which carries about 140,000 vehicles a day with large trucks making up 18% of them. MoDOT is running a predictive-analytics pilot on the I-270 North rebuild that forecasts high-crash-risk conditions up to 24 hours ahead so responders can pre-position.⁹

If you've been hit

Get the Missouri crash report. Crashes investigated by state agencies are logged in the Statewide Traffic Accident Records System kept by the Missouri State Highway Patrol, and the report lists the manner of collision, contributing circumstances, and the other driver's information.¹⁰ Photograph the scene and where the vehicles came to rest, get checked by a doctor even if you feel fine (rollover and side-impact injuries can hide for a day or two), and keep every bill and repair estimate.

If injuries or fault are in dispute, you can compare local personal-injury attorneys through the thatcarhitme.com legal directory.

This article is general information, not legal advice.

Sources

1. East-West Gateway Council of Governments, "Gateway to Safer Roadways: St. Louis Regional Safety Action Plan" (June 2024). https://www.ewgateway.org/gtsr/

2. Missouri Department of Transportation, "Number and Rate of Fatalities." https://www.modot.org/number-and-rate-fatalities-1a

3. Federal Highway Administration, "About Intersection Safety." https://highways.dot.gov/safety/intersection-safety/about

4. St. Louis Post-Dispatch, "4 killed, 4 critically injured in crash at South Grand Boulevard and Forest Park Avenue." https://www.stltoday.com/news/local/4-killed-4-critically-injured-in-crash-at-south-grand-boulevard-and-forest-park-avenue/article_448d16da-e1f0-5b5d-9d26-e98b24e36a04.html

5. St. Louis Magazine, reporting Trailnet's 2025 "The State of Our Streets" crash report. https://www.stlmag.com/news/gravois-trailnet-crash-report-2025/

6. Missouri Department of Transportation, "Safety Results." https://www.modot.org/safety-results

7. NHTSA, "Passenger Vehicles: 2023 Data" (Traffic Safety Facts, DOT HS 813 723). https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/813723.pdf

8. NHTSA, "Characteristics of Fatal Rollover Crashes." https://crashstats.nhtsa.dot.gov/Api/Public/Publication/809438

9. Missouri Department of Transportation, "Predictive Analytics for Traffic Management on I-270 in St. Louis." https://www.modot.org/predictive-analytics-traffic-management-i-270-st-louis

10. Missouri State Highway Patrol, Statistical Analysis Center, Missouri Traffic Safety Compendium (STARS / MOCARS). https://www.mshp.dps.missouri.gov/MSHPWeb/SAC/Compendium/TrafficCompendium.html