Classic East Bay Rides Washed Out by Winter Rains

[Updated November 27, 2017. Check the county public works pages listed below for the latest closure information]

The record-setting rainy season in 2017 led to washed out roads and bridges around the East Bay, many along popular bike routes. Repairs are in progress but access may will remain restricted for some time. Read on for details, and let us know if you encounter a closure not listed here.

  • Morgan Territory Road​ is closed for construction, with completion anticipated in mid-November 2017. The street about 2 miles south of Marsh Creek Road will be completely closed once this repair begins. A detour is being created for use by local residents using an existing private road and a fire road, it is NOT recommended for bicyclists (info here). ***A ribbon cutting for the new roadway is planned on December 2.***
  • Redwood​ Road is closed due to a roadway failure, south of Marciel Road in Castro Valley (info here). Redwood Road from the Oakland side remains open out to the Anthony Chabot campground. Emergency repair work is underway now, with completion expected by January 2018.
  • OPEN: Alhambra Valley Road between Castro Ranch and Bear Creek Roads will be reopened to all traffic again starting Friday, November 3, 2017. This is along the ‘Three Bears’ bike route north of Orinda, where a washed out culvert has been rebuilt after the record winter 2016 rainy season. In addition, this project extended the existing bike lanes on Castro Ranch Rd through the curve onto Alhambra Valley Rd, and tightened the turning radius to help slow car traffic. ***A ribbon cutting for the new roadway is planned on November 15.***
  • OPEN: Palomares​ Road is open again as of September 22! (info here)
  • OPEN: Canyon Road in Moraga is now reopened as of November 22 via the installation of a one-lane temporary replacement bridge, with a traffic signal allowing one direction through at a timeConstruction of a permanent, two-way bridge will proceed throughout 2018 (info here).
  • Calaveras Road from Sunol and Milpitas is closed to all traffic due to storm damage, between Geary Road and Oakridge Road (info here).
  • Arroyo del Valle Trail in Pleasanton is washed out between Harvest Circle and Main Street, and the Centennial Trail is closed between Val Vista Park and the Pleasanton Canal Trail (map of these and other Pleasanton trail closures here).
  • Comprehensive info about more trail closures at East Bay Regional Parks is available here.

Important phone numbers and webpages

Contra Costa County

Alameda County

Resources for reporting landslides, potholes, and other hazards in every East Bay city and unincorporated area are available online at