Marin-Sonoma Narrows Project

15 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 4
Document Title
Marin-Sonoma Narrows Project
Document Type
JD - Joint Document
Present Land Use
+/-16 miles of Mixed Urban and Rural Zones including the Cities of Novato and Petaluma along US 101 Corridor.
Document Description
Caltrans and the Federal Highway Administration (FHWA) propose to relieve recurring traffic congestion and to relieve high occupancy vehicle (HOV) lane user delay on US 101 by extending the High Occupancy Vehicle (HOV) Lane System for State Route 37 in Marin County to the Old Redwood Highway Interchange in Sonoma County, a distance of approximately 16 miles. This project is an important component of a comprehensive, multi-modal transportation plan.

Contact Information

Susan Simpson
Agency Name
Department of Transportation, District 4
Contact Types
Lead/Public Agency


Novato, Petaluma
Marin, Sonoma
Cross Streets
SR-37/Old Redwood Highway
State Highways
US 101
NWPR Corridor
Gnoss Field
Petaluma River/San Antonio Creek

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
Air Resources Board, Transportation Projects, California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Parks and Recreation, California Department of Transportation, Division of Transportation Planning (DOT), California Highway Patrol, California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Caltrans, Division of Aeronautics, Department of Toxic Substances Control, Office of Historic Preservation, Resources Agency, San Francisco Bay Conservation and Development Commission (BCDC), California Native American Heritage Commission (NAHC), California Department of Transportation, District 4 (DOT)
State Reviewing Agency Comments
California Native American Heritage Commission (NAHC), California Department of Transportation, District 4 (DOT)
Development Types
Transportation:Highway/Freeway (Additional of HOV Lane)
Local Actions
Project Issues
Aesthetics, Air Quality, Cultural Resources, Cumulative Effects, Economics/Jobs, Geology/Soils, Growth Inducement, Hydrology/Water Quality, Land Use/Planning, Noise, Population/Housing, Recreation, Transportation, Vegetation, Wetland/Riparian, Wildlife

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, 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.

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