State Route 251 - Sir Francis Drake Boulevard

California State Route 251

California 251 is an unconstructed route that is proposed in two segments in Marin County: from Interstate 580 near San Quentin west to U.S. 101 and from U.S. 101 in San Rafael west to California 1 near Point Reyes Station. Neither section has been built (or is in any near-range plans to be built), since it is intended to become a freeway. However, a surface street alignment of Sir Francis Drake Boulevard closely follows the proposed yet unconstructed routing of California 251 between Interstate 580 and U.S. 101 via San Quentin. This page shows pictures along Sir Francis Drake Boulevard through San Quentin. At this time, Caltrans does not plan to take over this local street as a state route.

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Page Updated Wednesday February 07, 2007.