State Route 37 Sears Point to Mare Island Improvement Project
11 Documents in Project
Summary
SCH Number
2020070226
Lead Agency
California Department of Transportation, District 4
(DOT)
Document Title
State Route 37 Sears Point to Mare Island Improvement Project
Document Type
NOD - Notice of Determination
Received
Posted
7/1/2026
Document Description
The project would reconfigure the existing SR 37 highway lanes from west of the SR 121 intersection to the Walnut Avenue Overcrossing at Mare Island; replace the Tolay Creek Bridge; construct additional through lanes to provide two lanes (tolled general purpose and High Occupancy Vehicle) in each direction; construct 8-foot shoulders (except at Sonoma Creek Bridge, which would have 4-foot shoulders); widen the Sonoma Creek Bridge; signalize the SR 37/Noble Road intersection; and enhance the degraded marsh habitat at Strip Marsh East, located south of SR 37.
Contact Information
Name
Cherry Zamora
Agency Name
California Transportation Commission
Job Title
Associate Deputy Director
Contact Types
Responsible Agency
Phone
Name
Skylar Nguyen
Agency Name
California Department of Transportation, District 4
Job Title
Senior Environmental Scientist
Contact Types
Lead/Public Agency
Address
Phone
Email
Location
Cities
Vallejo
Counties
Solano, Sonoma
Regions
San Francisco Bay Area
State Highways
State Route 37
Other Location Info
The project is located on SR 37 from PM 2.4 to 6.2 in Sonoma County, PM 0.0 to 8.5 in Solano County, and SR 121 from PM 0.0 to 0.2 in Sonoma County.
Notice of Determination
Approving Agency
California Transportation Commission
Approving Agency Role
Responsible Agency
Approved On
County Clerks
Solano, 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
No
(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, Supplemental Environmental Impact Report)
(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
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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