[Updated March 14, 2023. Check the county public works pages listed below for the latest closure information]
Our 2022-23 rain season has already washed out several popular bike routes and trails around the East Bay, with others closed due to flooding, fallen trees, and other hazards. With even more rain on the way this list is likely to grow. Repairs are in progress but access may will remain restricted, in some cases for a long time. Read on for details, and what to do if you encounter a closure not listed here.
(Photo: Washed out Redwood Road north of Castro Valley)
Road and Trail Closures
Follow the links below for info on impacted roadways in unincorporated areas around the East Bay, and East Bay Regional Parks trails. The most extensive closures are along rural or hills routes in unincorporated areas, and on regional trails, though there may be additional closures on other city streets or trails not listed here.
Contra Costa County – Unincorporated Area Roads
- Updates on current road closures: www.contracosta.ca.gov/CivicAlerts.aspx?AID=4282
- Public Works Maintenance Division‐ For emergencies during normal business hours, or to report a clogged drainage inlet: (925) 313‐7000
- California Highway Patrol‐ For emergencies after hours: (707) 551‐4100
- Contra Costa County Sheriffs Dispatch‐ For emergencies after hours: (925) 646‐2441
Alameda County – Unincorporated Area Roads
- Updates on current road closures: https://roadclosures.acgov.org/
- Public Works Agency ‐ To report hazards during normal business hours: (510) 670-5500
- California Highway Patrol‐ For emergencies after hours: (707) 551‐4100
City of Oakland
- Updates on current road closures: https://www.oaklandca.gov/resources/road-closures
- Public Works Agency ‐ To report hazards at any time: (510) 615-5566
East Bay Regional Parks – Trails and Facilities
- Updates on current trail and park closures: https://www.ebparks.org/alerts-closures
- For emergency hazard or after-hours reports: (510) 881-1121
- For non-emergency hazard reports Mon-Fri, 8:30am-5pm: (510) 881-1121 (or 510-881-1833 after hours/weekends)
Hazard Reporting
Resources for reporting landslides, potholes, and other hazards in every East Bay city and unincorporated area are available online at BikeEastBay.org/Hazards
- CALL IN any emergency issues like flooding, landslides, downed trees or power lines, as opposed to reporting them via an app or website which might result in a slower response time. Contra Costa County Public Works, Alameda County Public Works, and East Bay Parks phone numbers are provided above.
- For non-emergency app, website, or email reports, include detailed location info and if possible a photo of the issue showing the whole street, not a close up, to help Public Works crews locate and fix it.
(Photo: Flooded 580 underpass at Webster Street in Oakland)
Bike Safely
- If you encounter road closure signage or downed power lines, do not ride through. Use extreme caution and avoid biking through deep or murky water whenever possible.
- Beware of bike-eating puddles! Even small ones can hide nasty things like potholes, nails, or glass, which can cause a flat tire or a crash.
- Tips for biking in the rain are available at BikeEastBay.org/WetWeather. However, during intense storms we recommend avoiding non-essential travel by any mode. Keep it slow, play it safe, and when in doubt turn back.
If you encounter major road or trail closures not indicated in the resources above, please let us know so we can help get the word out: BikeEastBay.org/contact
