Gist Road Bridge

Cochran worked with the City of Bridgeton to replace the existing Gist Road Bridge and improve the surrounding roadway. As a federally funded project, the worked required careful coordination, detailed engineering and adherence to MoDOT’s Local Public Agency (LPA) requirements from design through construction. 

Cochran provided surveying, geotechnical services, hydraulic analysis, engineering design, construction administration and special inspection for the project. The new bridge is an 82-foot single-span structure utilizing efficient NU 35 prestressed concrete girders. The project also included removal of the existing bridge, excavation and embankment, asphalt pavement, concrete work, guardrail, rock blanket, traffic control and site restoration.

The project was designed to provide a new, durable crossing while addressing the roadway improvements needed around the bridge. Cochran also worked closely with City staff throughout construction, providing special inspection services to confirm that the project was built according to the plans and appliable federal and MoDOT standards. Construction of the bridge was completed in April 2015.