Oates Associates has a long history of providing engineering design services throughout the Metro East region. Expanding into a new Belleville office deepens our commitment to St. Clair County.

We have moved our Belleville operations from our previous location to a larger office to allow for more workspace to accommodate a growing workforce. The new office is located at 1 South Church Street, Suite 200 in Downtown Belleville – just steps away from Main Street.

Oates Associates will continue to serve St. Clair County-based clients from our Belleville location while the Collinsville, St. Louis and St. Charles offices focus on other clients throughout the area.