On 26.03.2013 the California Department of Transportation (Caltrans) officially opened the northbound and southbound Highway 1-Devil’s Slide Tunnels to traffic overnight.

The $439 million project features twin 1,280 m-long tunnels, 32 jet-powered fans for ventilation, and 10 fireproof shelters between the tunnels to protect the public.

The new tunnels, located about 24 km south of San Francisco between Pacifica and Half Moon Bay, bypass a curvy section of SR-1 built in 1937 that has been plagued by rockslides, repeated erosion and collapses. For more, click us/93, here for tunnelbuilder archive and visit www.dot.ca.gov/dist4/dslide/. 14/13.