Prepare for a detour on Devil’s Slide

Within the next two weeks, the first stage of a two stage detour will be in place on Highway 1 near the south portal of the Devil’s Slide Tunnels. Caltrans hasn’t set a firm date for the detour yet.

The detours will be created near the south portal of the planned tunnel. The Stage 1 detour (shown in blue on the first map) will operate until the Stage 2 detour (green on the second map) is built. This second detour creates space needed for tunnel excavation work. Included in the Stage 2 detour plan is a 340 feet long retaining wall on the west side (shown in purple on second map).