Construction of an extension to Route 115 (Santa Clara Street, now SR 130) at 30th Street in San Jose began in 1939, and was completed by late 1940. As with the portion between Fourth and 13th Streets, it was not marked as a numbered route. The state legislature authorized an extension beyond San Jose back to El Camino Real near Ford Road in 1947, which was already under construction, and was completed that year. This was the first segment built with interchanges, and included a median barrier. Despite this, most crossings were at-grade; only the two ends at Route 115 (Santa Clara Street) and regular US 101 included bridges, the former a diamond interchange and the latter a simple split with additional access to Ford Road. It also crossed over Coyote Road, though with no access, just south of the Coyote Creek bridge. The original 1947 bridge over Coyote Road remains, though widened in 1990, and is one of the oldest road-road grade separations on the present freeway.