State Route 1 Traffic Operational Systems Improvements Project

5 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 4 (DOT)
Document Title
State Route 1 Traffic Operational Systems Improvements Project
Document Type
FIN - Final Document
Present Land Use
State Right-of-Way
Document Description
The California Department of Transportation (Caltrans) proposes to install six wireless detection systems (WDS), four ground mounted variable message signs (VMS), Midwest guardrail systems (MGS), and maintenance vehicle pullouts (MVP) on State Route (SR) 1 in San Mateo County from the Miramontes Point Road Intersection to the Clarinada Avenue Undercrossing. The project would also update software at an existing changeable message sign (CMS) at the entrance to the Tom Lantos Tunnels at Devil’s Slide. The total length of the project is approximately 20.9 miles. The proposed project would occur in San Mateo County on SR 1 from postmile 26.43 to 47.20.

Contact Information

Zachary Gifford
Agency Name
Caltrans, District 4
Contact Types
Lead/Public Agency


Half Moon Bay, Pacifica
San Mateo
San Francisco Bay Area
Cross Streets
State Route 1
Parcel #
State right-of-way
State Highways
SR 1
Half Moon Bay airfield
Denniston Creek. No work will be done in creek.
Other Information
Postmile 26.43 to R47.20

Notice of Completion

State Reviewing Agencies
California Air Resources Board (ARB), California Coastal Commission (CCC), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, Division of Aeronautics (DOT), California Department of Transportation, Division of Transportation Planning (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), California Transportation Commission (CATC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality
Development Types
Transportation:Other (Traffic Operational Systems Improvement)
Local Actions
Coastal Permit, Traffic Operational Systems Improvement
Project Issues
Biological Resources, Coastal Zone, construction-related impacts


Final Document(s) [Approved_Certified draft environmental documents]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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