Find out information on how to get approval to hold events on state-maintained roads.

Information on locating the main office and the Transportation Management Center for MoDOT St. Louis

Request various types of plans for MoDOT-maintained state roadways in the greater St. Louis area.

MoDOT's Gateway Guide shares real-time information for people traveling around the St. Louis area.

MoDOT is an active partner in the St. Louis Regional Clean Air Partnership to keep St. Louis air clean.

During winter storms, crews operate around the clock to clear and treat roadways, as appropriate.

J-turns (or restricted crossing U-turns) help improve safety by removing left turns at busy intersections.

Flashing yellow left turn arrows are used in certain locations to help traffic make a yielding left turn.

Information on when MoDOT might consider sound walls, and what criteria must be met to construct them.