Sausalito, California

Redwood Bridge (Marin County, California)
Built 1931
Lost Concrete pony/through girder bridge over Richardson Bay on Highway 101
Demolished

Richardson Bay Bridge (Marin County, California)
Built 1957; rehabilitated 1973
Concrete stringer bridge over Richardson Bay on US 101
Open to traffic

Waldo Tunnel (Marin County, California)
Built 1937, Second bore added, 1954
Tunnel on US HIGHWAY 101
Open to traffic