Roads / Trails Report a Hazard

Who can fix
the problem I found?

On the Roads

Use your Marin Bicycle Map or the Marin County Jurisdictions Map to see which jurisdiction the problem lies in.

  • Road condition reports must be made to the correct jurisdiction’s Department of Public Works (DPW) – all are listed below.
  • Note street addresses and/or mileage marker signs (if they exist) when reporting hazards.
  • Take a photograph of the hazard to share with department staff, if possible.
  • Off-street multiuse path issues are more typically under the jurisdiction of the local Parks and Recreation Department.

Contacting the wrong DPW will not get your concern addressed, since they do not forward messages. Confusion often arises near the borders of jurisdictions; sometimes no one claims responsibility for repairs in such places. If you find an area for which no one claims responsibility, please let MCBC know.

The list below provides telephone numbers and email addresses for the County of Marin (overseeing unincorporated areas), all towns and cities (the incorporated areas), Golden Gate National Recreation Area (GGNRA), and Caltrans (state roads). The email addresses appear as a link on each contact name below, and will either take you to a direct email or to a web page with a form you can submit. MCBC will be cc’d automatically on all emails except those sent using a web page form.

Please be specific that you are requesting maintenance (ie. filling a pothole, sweeping road shoulders, repairing cracks, etc.) and clearly identify the location of the problem (ie. “the pothole is on the northbound lane of Steep Hill Road, along the stretch between the Filler Up Bar and West Avenue”). Note the street addresses and/or mileage marker signs (if they exist). Public staff are usually quite busy and will respond better to your request if you include courtesies like “please” and “thank you”. Also, take a photograph of the hazard to share with department staff, if possible.

Who to contact

County of Marin (Unincorporated)
Lawrence Lewis (County Roads) 415 473-7388
Multi-Use Paths (including Cal Park Hill, Miller
Creek / Pacheco, and Mill Valley-Sausalito Pathways)
415 499-6387
Cities & Towns
Belvedere Scott Derdenger 415 435-3838
Corte Madera Kevin Kramer 415 927-5057
Fairfax Mark Lockaby 415 458-2370
Larkspur (including Sandra Marker Trail & Larkspur Pathway) Julian Skinner 415 927-5020
Mill Valley Jill Barnes 415 388-4033
Novato (including Enfrente Pathway) Dave Meyers 415 899-8283
Ross Robert Maccario 415 453-1453  x163
San Anselmo Sean Condry 415 258-4676
San Rafael (including Lincoln Hill and Mahon Creek Pathways)
*links to online form via San Rafael’s “Report A Problem” page.
Please email Bjorn Griepenburg with a description of
your report. Thanks!
Kevin McGowan 415 485-3355
Sausalito Jonathon Goldman 415 289-4176
Tiburon Nicholas Nguyen 415 435-7388
State Parks Danita Rodriguez 707 769-5665  x224
GGNRA 415 561-4951
Caltrans (For State Roads only)report online
please email Bjorn Griepenburg with a copy of your report
South Marin 415 289-2951
West Marin 707 762-6641
North Bay 707 762-6641

On the Trails

Report trail issues to the Ranger (R)
For general information call the Office (O)

For emergencies, call 911

Marin County Emergency Medical Services (MCEMS) can be reached at 415 472-0911

Marin County Parks & Open Space
Trail Issues: 415 499-6387
Office/Info: 415 507-2816

California State Parks Mount Tamalpais
Trail Issues: 415 388-3653

China Camp
Trail Issues: 415 456-0766
Office/Info:  707 769-5665

Marin Municipal Water District
Trail Issues: 415 945-1180
Office/Info:  415 945-1195

Trail Issues: 415 389-4100
Office/Info:  415 388-4033

Camp Tamarancho, Boy Scouts Marin
415 454-1081

Marin County Sheriff’s Office
Non-Emergency/Info: 415 479-2311

For questions or issues you can’t resolve through the contacts above, please contact Off-Road Director Tom Boss.

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