Sir Francis Drake Boulevard Bridge Replacement Project

The Sir Francis Drake Boulevard Bridge Replacement Project, managed by the Marin County Department of Public Works, involves replacing the existing bridge over Olema Creek in Point Reyes Station, California. The project consists of constructing a new single-span, cast-in-place, post-tensioned concrete slab bridge approximately 77 feet long and 38 feet wide. The new structure will feature two 11-foot-wide lanes, 6-foot-wide shoulders, and 2-foot-wide barriers in each direction. The scope of work includes shifting the bridge alignment to the east, constructing new abutments supported by sixteen 16-inch-diameter steel pipe piles, realigning and repaving the boulevard, relocating utilities, implementing temporary creek diversions, and performing revegetation and stormwater improvements. Environmental compliance is a critical component of the project, as detailed in the Natural Environment Study and Mitigated Negative Declaration. Key requirements include the use of approved biological monitors, mandatory environmental education for construction personnel, and the installation of 4-foot-high wildlife exclusion fencing. The project also mandates tree preservation measures overseen by a licensed arborist and strict adherence to NPDES Permit stormwater BMPs. Financial safeguards include performance bonds for habitat mitigation and restoration of temporary fill areas. Public review for the environmental documentation was scheduled from June 1 to July 1, 2026.