Marin Sonoma Narrows (MSN) HOV Widening Project
16 Documents in Project
Summary
SCH Number
2001042115
Lead Agency
California Department of Transportation, District 4
(DOT)
Document Title
Marin Sonoma Narrows (MSN) HOV Widening Project
Document Type
NOD - Notice of Determination
Received
Posted
5/21/2025
Document Description
Relieve recurrent congestion along 16.1 miles of US 101 in Marin County from PM 18.6 to PM 27.7 and in Sonoma County from PM 0.0 to PM 7.1. Widen and realign existing mainline to improve overall traffic operations and access.
Contact Information
Name
Cherry Zamora
Agency Name
California Transportation Commission
Job Title
Associate Deputy Director
Contact Types
Responsible Agency
Phone
Name
Christopher Pincetich
Agency Name
California Department of Transportation, District 4
Job Title
Environmental Analysis Branch Chief
Contact Types
Lead/Public Agency
Address
Phone
Location
Counties
Sonoma
Regions
Northern California, San Francisco Bay Area
State Highways
US 101
Other Location Info
United States Highway (US) 101 from postmile (PM) 18.6 to 27.7 in Marin County, and PM 0.0 to 7.1 in Sonoma County.
Notice of Determination
Approving Agency
California Transportation Commission
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Sonoma
Final Environmental Document Available at
Caltrans District 4, 111 Grand Ave, Oakland, CA 94612.
Determinations
(1) The project will have a significant impact on the environment
Yes
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
Yes (Addendum)
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
Yes
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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