First Coast Expressway

The First Coast Expressway (SR 23) is a new alignment, multi-lane, high-speed, limited access tolled expressway that will connect Duval, Clay, and St. Johns counties in Northeast Florida. The corridor will extend over 46 miles between I-10 and I-95 around the southwest and southern areas of the First Coast region. The project is anticipated to cost approximately $1.8 billion for the complete, eight-lane corridor, and is being constructed in seven separate segments with various procurement methods.

Serving as owner’s representative to the Florida Department of Transportation (FDOT) District 2, RS&H and its subconsultants are providing a wide range of services, such as program management, planning, preliminary engineering, final engineering design, traffic, environmental, surveying, mapping, geotechnical, public involvement, and construction cost estimating.

RS&H is serving as engineer-of-record for three segments of the expressway representing over $459 million in total construction costs: SR 23/US 90 interchange (completed), Clay north, and Clay south. In addition, RS&H is assisting FDOT with design-build procurement support services for four segments: Duval north, Duval south, the St. Johns River crossing, and St. Johns east. Both Duval segments are completed.