Traffic engineering in Belleville, Illinois

Welcome to the St. Clair County Highway Department, your trusted local government office dedicated to maintaining and enhancing the transportation infrastructure of St. Clair County. Conveniently located at 1415 North Belt West, Belleville, Illinois 62226, our department is committed to ensuring safe and efficient travel for all residents and visitors. Our team of skilled professionals works diligently to oversee the design, construction, and maintenance of roads, bridges, and other essential transportation facilities within the county. We prioritize safety, sustainability, and innovation in all our projects, striving to improve the quality of life for our community through reliable and accessible infrastructure.