Sonoma County – Caltrans Bay Area begins a safety project this week to install rumble strips on the entire length of State Route 1 (SR-1) in Sonoma County, nearly sixty miles (58.3), between Valley Ford and the Mendocino County border. Additionally, Caltrans will create 29 bicycle pullouts along the route.
O.C. Jones, Inc. is the contractor on the $5 million contract, which is estimated for completion in late October.
Rumble strips are raised or grooved pavement patterns that, when driven over, provide audible and tactile stimulation – sound and vibration – to alert motorists that they have strayed from their lane.
To install the rumble strips, workers will grind away the existing double center line, add the rumble strips, and then restripe. The width of the rumble strips and the double yellow lines is nearly identical, so that the rumble strips will underlie most of the center line striping.
Rumble strips will not be added to the shoulders.