This four-year project rehabilitates or resurfaces 14 bridges along I-55 between I-44 in the city of St. Louis and Lindbergh in St. Louis County.

A project to replace overhead signs along the I-55 corridor between the Ste. Genevieve County Line and the Poplar Street Bridge.

The westbound Daniel Boone Bridge that carries I-64 across the Missouri River will be rehabilitated, with some traffic moved to the eastbound bridge.

This project widens the bridges on I-270 over Conway and Ladue and adds additional ramp lanes between I-64 and I-270.

Crews are replacing overhead signs along the I-270 and I-255 corridor in St. Louis County.

This project updates sidewalks, signals and pedestrian crossings along Route 21 in St. Louis County.

A project to make updates to the roadway’s pedestrian facilities between Lindbergh and the Jefferson County line and resurface the roadway when those updates are completed.

This project updates sidewalks and signals between Page and Swan along Route 61/67 and resurfaces the roadway. Also replaces the bridge over Deer Creek.

MoDOT has a project planned for Route 100 (Manchester Road) between I-270 and Route 141. The project includes bridge and culvert maintenance, sidewalk and signal updates and resurfacing.

A resurfacing and safety project along Route 100 between Route 109 and Route OO in Franklin County. Includes left turn lanes at several intersections along the corridor and J-turns at Route T and Pond...

This project constructs a roundabout at the intersection of Route 109 and Route CC as part of efforts to improve traffic flow.

A 2025 project to make updates to the southbound Route 141 interchange with eastbound and westbound I-64.

A project to make safety improvements and resurface Route 231 between Franru and the city of St. Louis limits.

The Missouri Department of Transportation has a two-year project scheduled for Route 231 (Telegraph Road) between Franru and the Meramec River to update signals and pedestrian facilities and resurfaci...

A two-year project to make pedestrian updates and resurfacing along Route 267 from Lindbergh to the city of St. Louis limits.

A project to update sidewalks and pedestrian crossings along Route 366 in St. Louis County between Geyer Road and the St. Louis city limits. At the end of the project, Watson will be resurfaced.

The Missouri Department of Transportation has a project, starting in early 2025, scheduled for Missouri Route AB (Ladue Road) between I-270 and Route 141. As part of the project, the department will b...

A pdf map showing what constructions projects are planned for southwest St. Louis County in 2025 and 2026 and where those projects are.

Planning is currently underway to make various updates to more than 30 bridges along I-44 in the city of St. Louis and St. Louis County.

A project to replace overhead signs along I-64 between the Poplar Street Bridge and I-70 in St. Charles County, and to replace signs along I-170 between I-64 and I-270.

This study looks at ways to improve traffic flow at I-44 and Shrewsbury in St. Louis county.

This study examines way to improve traffic flow between I-55 and River Des Peres.

This two-year project completed necessary preventative maintenance and painting on the I-255 bridge over the Mississippi River. Work on the I-255 bridge over Koch Road was also completed. The eastboun...

This project updated signals and sidewalks along Lindbergh between Barracksview and Big Bend and resurfaces the roadway.

This project updated signals, pedestrian crossings and sidewalks along Route 100 (Manchester Road) between Lindbergh and I-270. The roadway wasresurfaced at the end of the project.

This project updated sidewalks and pedestrian access also Route 100 (Manchester Road) between Big Bend and Lindbergh. The project also replaced the Black Creek bridge (west of Hanley) on Manchester Ro...

This project eased traffic flow around the Route 141 and I-44 interchange, constructing a flyover ramp from southbound 141 to eastbound I-44, updating access to eastbound and westbound I-44 and making...

This project updated sidewalks and several pedestrian crossings and signals along Route 340 between Lea Oak and I-270 and resurfaced the roadway.

This project updated sidewalks, signals and pedestrian crossings along Route P(Mackenzie) between Route 30 and Watson Road.