How long is U.S. Route 101?
U.S. Route 101
The US101E designation was removed by the 1940s and became SR17 (later I-880 and I-580) between San Jose and Santa Cruz. As the Bayshore Freeway was built along the east side of the San Francisco peninsula in the early 1950s, old US101 along the El Camino Real was posted as US101 Alternate or US101A, and the freeway was marked US101 Bypass or US101B. In 1964, when California renumbered numerous state highways, El Camino was renumbered SR82 and the Bayshore Freeway lost the bypass designation.