The I-270 North Design Build Project will improve mobility on the mainline, at interchanges, and on the outer roads. It aims to reduce traffic congestion faced by local users and interstate travelers.

Construction continues on the I-44 Meramec River Bridge project just west of I-270

View Construction Projects by area in the St. Louis region.

Fill out the linked form to requests copies of available microfilm for state maintained roadways.

Information on planning events on state-maintained roadways (interstates and state numbered or lettered routes)

This page hosts information regarding St. Louis area transportation such as the St. Louis area Mobility scorecard,  information about highway features, and contacting the district.

Find answers to common transportation questions in the St. Louis area.