Oates Associates provides civil and structural engineering services. Our civil engineers have experience in roadway design and site planning for a variety of clients in both the public and private sectors.  Our engineers and architects work together to create spaces and designs that are as visually pleasing as they are efficient.

Our structural staff has designed over 200 bridges in the last 20 years, from small stream crossings to major interstate interchange structures and from rehabilitations and replacements to new structures. Hydraulic design for new bridges and replacements is performed in-house by experienced hydraulic engineers.

Oates has provided structural design services for a variety of buildings and building types throughout the region, creatively adapting the structural components to the design.  From new multi-million dollar facilities to building additions, we have crafted solutions that create great places.

Oates Associates is prequalified to perform services for the Illinois Department of Transportation and the Illinois Capital Development Board. In Missouri, we are prequalified to perform services for the Missouri Department of Transportation, the City of St. Louis Board of Public Service and the Metropolitan St. Louis Sewer District.

Experience Areas