The Northern End of Interstate 580

The northern endpoint of Interstate 580 at US 101 in San Rafael, California

The northernmost end of Interstate 580 in the Bay Area is at its interchange with US 101 in San Rafael. Interstate 580 is one of the Bay Area's longest freeways, ending at Interstate 5 near the San Joaquin-Stanislaus county border. That's a long way from San Rafael, in Marin County.