Construction season is in full swing across Missouri, and the roads are more active (and more dangerous) than ever. On May 4, 2026, a driver struck and killed a 35-year-old construction worker near Waynesville who was flagging traffic on the roadway. Investigators say the driver never saw him.
That loss marked the fifth work zone fatality in Missouri just five months into the year, a sobering reminder that construction zones are active danger zones where lives are on the line every single day.
Missouri Work Zone Fatalities and Crash Statistics in 2026
Missouri is in the middle of what state officials are calling a record-breaking construction season. According to the Missouri Department of Transportation (MoDOT), nearly 1,000 active work zones are operating across the state on any given day. From major interstate expansions to bridge rehabilitations on smaller county routes, crews are working throughout the Show Me State, and the risk to both workers and motorists is real and well-documented.
The numbers behind Missouri’s work zone crash problem are hard to ignore. According to MoDOT’s official “Work with Us” press release, 24 people were killed in Missouri work zone crashes in 2025, with another 110 suffering serious injuries. Distracted driving contributed to at least 11 of those fatalities and more than 400 work zone crashes statewide last year alone.
What makes 2026 particularly concerning is the pace. Five fatalities by early May already signals that 2025’s grim total could be matched or exceeded before summer ends. MoDOT also tracks crashes involving its protective vehicles, specialized trucks and trailer-mounted attenuators (TMAs) designed specifically to absorb the impact of errant vehicles and shield workers.
Those vehicles were struck 50 times in 2025, up 16 hits from 2024. In just the first quarter of 2026, MoDOT recorded 12 additional protective-vehicle crashes, and by late spring, the statewide TMA hit count had already climbed to 21, including six in the St. Louis metro area alone.
Nationally, the picture is equally serious. According to the National Work Zone Safety Information Clearinghouse, nearly 900 people are killed in U.S. work zone crashes every year, with thousands more injured. The majority of those killed are motorists, not workers, meaning the risks inside a construction zone extend well beyond the crew on the ground.
Where Missouri’s Most Active Construction Zones Are Right Now
If you drive regularly in Missouri, chances are you are already encountering construction on a daily basis. Several major corridors are currently under active work, and drivers should plan accordingly.
Interstate 70 is undergoing one of the most significant infrastructure overhauls in the state’s history. MoDOT’s Improve I-70 program is adding a third travel lane in each direction across nearly 200 miles of the corridor, from Blue Springs to Wentzville.
In April 2026, MoDOT broke ground on the fifth section of this project, covering the 13-mile stretch between Route 5 in Boonville and the Missouri River Bridge at Rocheport. That section alone is scheduled for completion in late 2028, meaning work zone conditions along I-70 will remain a factor for years to come. Lane closures, rolling roadblocks, and shifting traffic patterns are active across multiple counties along this route.
Interstate 44 is the other major corridor seeing intensive activity. The Forward 44 program, a $471 million effort, targets the most deteriorated sections between Springfield and St. Louis. Current work includes pavement widening on I-44 in Pulaski County from just east of Exit 156 in Waynesville to Exit 159 in St. Robert, multiple bridge rehabilitation projects at various overpasses, and auxiliary lane additions in both directions near St. Robert. The area around Waynesville, where the May 5 fatality occurred, sits squarely within this corridor.
In the St. Louis region, I-270 is also seeing significant construction. Bridge replacement work over Conway Road and Ladue Road was underway through spring 2026, and additional corridor improvements including lane additions from Lilac Avenue to west of Route H are ongoing.
Route 370 between St. Charles and St. Louis County is operating in a reduced configuration through late 2027 while bridge rehabilitation is completed on the Discovery Bridges. I-55 between I-44 and Lindbergh is also in an active resurfacing phase.
Drivers in mid-Missouri should be aware of ongoing work near Salem and Waynesville on Routes 19 and 17, where pedestrian facility upgrades and single-lane closures with flaggers are in effect into the summer. Route J over I-44 at Exit 169 is fully closed for bridge rehabilitation through June 2026, with a signed detour in place.
Distracted Driving: The Leading Cause of Work Zone Crashes in Missouri
Across all the data MoDOT has compiled, one factor consistently rises to the top: distracted driving. Investigators noted that the driver who struck and killed the worker near Waynesville simply never saw the flagger in front of him. That is arguably a pattern. Missouri’s hands-free law already makes it illegal to hold a phone while driving, yet enforcement and awareness remain ongoing challenges.
MoDOT Assistant District Engineer Matt Killion said it plainly: slowing down and staying off your phone in a work zone is not just common courtesy; it is the law.
Missouri’s Move Over law requires drivers to change lanes or slow down when approaching state vehicles and equipment with flashing lights. Fines apply when violations occur. Still, distracted driving contributed to more than 400 work zone crashes in Missouri in 2025 alone.
The problem is not limited to handheld phones. Speeding through reduced-speed zones, following too closely, and failing to merge early all contribute to the crash rates being seen across the state. Workers on projects like those along I-44 in Pulaski County or I-70 between Boonville and Rocheport are exposed to traffic at highway speeds mere feet away from where they are standing. A momentary lapse in driver attention can be fatal.
If you are traveling any of Missouri’s active construction corridors — and this summer it is nearly impossible to avoid them entirely — the guidance from every agency is consistent: slow down, put the phone down, and plan for delays. You can check real-time work zone locations statewide through MoDOT’s Traveler Information Map at traveler.modot.org.
The Danger Is Not Just for Workers; Motorists Are at Risk Too
It is worth noting that in most work zone crashes, the person hurt is not a highway worker. Instead, it is a driver or passenger. Nationally, approximately 85 percent of people killed in work zone crashes are motorists, according to data from the Federal Highway Administration.
When a driver rear-ends a protected vehicle or fails to merge, the consequences can include severe injuries to people inside those vehicles: head trauma, spinal injuries, broken bones, and worse.
This context matters for anyone involved in a work zone crash in Missouri. Whether you are a driver struck by a distracted motorist while slowing through a flagging zone, a passenger injured when a vehicle failed to yield, or a family trying to understand what happened after a collision on I-44 or I-70, it is critical to know what documentation exists and what steps come next.
Our guide on common injuries after car accidents can help you understand what those involved are often facing medically. And if you want to understand what typically causes these situations in the first place, our overview of the most common causes of car accidents covers distracted driving, speeding, and other key factors in depth.
Frequently Asked Questions: Missouri Work Zone Crashes
What is the penalty for speeding in a Missouri work zone?
Missouri law doubles fines for speeding violations in active work zones, and drivers who injure or kill a worker may face criminal charges in addition to civil liability.
Are Missouri work zone crashes required to be reported to police?
Yes, any crash in Missouri involving injury, death, or property damage over $500 must be reported to law enforcement, regardless of whether it occurs in a work zone.
What should I do if I’m involved in a crash in a Missouri construction zone?
Move to safety if possible, call 911, and request an official police report — that report is the primary documentation you will need for insurance or any follow-up action.
Find Updated Missouri Crash Information at Local Accident Reports
Missouri roads are more active with construction this year than at any point in recent memory, distracted driving continues to cause preventable deaths and injuries in work zones statewide, and the risks are real for everyone passing through, workers and drivers alike.
If you are looking for updated crash reports from Missouri’s highways, interstates, and local roads, Local Accident Reports covers incidents across the state as they are reported. You can browse the latest Missouri accident news and find information organized by county, or check the Missouri crash hot spots page for location-specific data.
Perhaps you need help obtaining an official police report after a crash. Our team is available around the clock; just call 888-657-1460 and we will walk you through the process.
