Marin-Sonoma Narrows HOV Widening Project

15 Documents in Project


SCH Number
Lead Agency
California Department of Transportation, District 4
Document Title
Marin-Sonoma Narrows HOV Widening Project
Document Type
FIN - Final Document
Document Description
The California Department of Transportation and the Federal Highway Administration propose to improve a 26.0-kilometer, or 16.1-mile segment of US 101, from Route 37 in the City of Novato (Marin County) northward to the Corona Overcrossing in the City of Petaluma (Sonoma County). The improvements involve, among other upgrades, constructing High Occupancy Vehicle lanes, widening and realigning portions of the roadway, construction of new interchanges, upgrading drainage systems, and construction of new frontage roads and bikeways.

Contact Information

Melanie Brent
Agency Name
California Department of Transportation
Contact Types
Lead/Public Agency


Novato, Petaluma
Marin, Sonoma
Cross Streets
US 101 / Route 37, US 101 / Route 116
State Highways
37, 116
Gnoss Field
San Pablo Bay, Petaluma River, various creeks

Notice of Completion

Development Types
Transportation:Highway/Freeway (High Occupancy Vehicle lane / Widening)
Project Issues
Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Fiscal Impacts, Flood Plain/Flooding, Geology/Soils, Growth Inducement, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Population/Housing, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian

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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