The City of Lake Saint Louis, Missouri and Oates Associates, a civil and structural engineering firm, recently received an Honor Award from the American Council of Engineering Companies (ACEC) of Missouri for their work on the Lake Saint Louis Boulevard Roundabout. The ACEC competition recognizes firms for projects that demonstrate innovation, achievement and value. An Honor Award is given to projects worthy of special recognition for achieving engineering excellence.

The Lake Saint Louis Boulevard Roundabout is a 6-legged roundabout that incorporates all entries of Veterans Memorial Parkway, I-70 westbound ramps and Lake Saint Louis Boulevard. This modern roundabout fulfilled the City’s goal of improving traffic conditions at the I-70/Lake St. Louis interchange and beautifying the area for future redevelopment in the City.

Oates Associates’ involvement began in 2016 with the completion of a successful roundabout study with MTJ Roundabout Engineering. The study analyzed the existing intersection and determined alternatives that would best sustain residents and businesses in the district. This led to the continuation of designing a modern roundabout in the City of Lake Saint Louis. After the design phase, the roundabout was constructed and has been complete and operational as of since the Fall of 2021. Since then, the City has reported much positive feedback from both elected officials and the traveling public.

This is the second award the roundabout has received since being constructed. Last November, the roundabout was awarded the Public Works Project of the Year Award from the American Public Works Association (APWA) Missouri Chapter for showing excellence in administering and executing a public works project while working with outside organizations as a team.  Congratulations to the entire team including the City of Lake Saint Louis, Oates Associates, MTJ Roundabout Engineering, EFK Moen, Arcturis, Geotechnology and RTM Engineering Consultants.


Pictured left to right: Senior Project Manager Mike Busch and the City of Lake Saint Louis, Missouri’s Public Works Director Terry Rigdon