Caltrans Invites Public to Attend Public Meeting for Marin City Second Culvert Project on Wednesday, June 18

Marin County - Caltrans (District 4, Bay Area) invites the community to join a public meeting for the Marin City Second Culvert Project on Wednesday, June 18 from 6 to 7:30 p.m. (doors will open at 5:30 p.m. for open house) at the Marin City Senior Center, 640 Drake Ave, Marin City, CA. 94965.

The Marin City Second Culvert Project on US-101 proposes to build a new drainage system, including a 6-by-4 culvert that will help mitigate flooding in the Marin City area. The location is near Marin City from Donahue Street to 0.3 miles north of Donahue Street.

The culvert would convey stormwater flows from west of US-101 to Richardson Bay in Marin City.

The project would also replace damaged storm drainpipes in the US-101/Donahue Street interchange area and repair uneven pavement on US-101 within the project area.

At this meeting, attendees will have the opportunity to learn about the project and ask questions.

Join in person or virtually at https://us06web.zoom.us/j/85874564998 or by phone: (669) 900-6833. Webinar ID: 858 7456 4998

Submit a comment in writing during the public comment period, from Wednesday, June 4 to Monday, July 7, 2025.

Send by mail to:
Caltrans District 4, Office of Environmental Analysis
ATTN: Christopher Pincetich,
P.O. Box 23660, MS 8B
Oakland, CA 94623-0660

Or by email to EnvPlanning@MarinCounty.gov

The project is scheduled to go into construction in 2027.

Please send questions to marin_city_second_culvert_project@dot.ca.gov

Check out the project website at Second Culvert Project on US-101 in Marin City | Caltrans

Caltrans is coordinating with Marin County and the Marin City Stormwater Task Force, which includes a county project, permanent pump station and floodwall within project limits. These Marin County projects are not part of this project. Please contact the county for more information.

For 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov Follow us on X: https://x.com/CaltransD4 Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.

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