Owned and operated by Caltrans, the Devil's Slide project is located on State Route 1 in San Mateo County between the City of Pacifica and the town of Montara, California. This project will construct approximately 6,500ft of roadway along State Route 1 consisting of two parallel tunnels, a north-portal approach including parallel bridges, and a south-portal approach.
The tunnels project will provide an alternative route to bypass a geologically unstable portion of the existing State Route 1 which is subject to lengthy closures, high-maintenance costs, and risk of permanent failure. The Caltrans Oakland traffic management center (TMC) will remotely maintain normal control of the tunnels. In emergency situations, the tunnels will also have the capability to be controlled from the operations and maintenance center (OMC).
Transdyn is providing a tunnel control system, environmental monitoring, telephone, CCTV, radio rebroadcast, intrusion detection, and ventilation-control systems. Transdyn is furnishing hardware, configuration, and testing to provide Caltrans with a complete monitoring and control system for the tunnels.
Caltrans manages more than 45,000 miles of California's roadway lanes and provides inter-city rail services. The department improves mobility across California with six primary programs: aeronautics, highway transportation, mass transportation, transportation planning, administration, and the equipment service center.
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