ALERT: County Shuts Down Marsh Creek Rd., Morgan Territory Rd., Alhambra Valley Rd.

January 10, 2017 21:43 pm · 6 comments


Contra Costa County crews have closed the following roads:

  • Marsh Creek Road between the Clayton city limits and Deer Valley Road
  • Alhambra Valley Road between Reliez Valley Road and Castro Ranch Road
  • Morgan Territory Road between Marsh Creek Road and Curry Creek Park

The closures are required due to mudslides and flooding concerns. The roads will be open to local traffic only. Signs and message boards will alert drivers of the closures. Drivers are encouraged to use Highway 680 or Highway 4 alternate routes.

Given the lack of time between storms that would normally allow for the ground to better absorb the rain water, drivers can expect potentially more small slides in the coming 48 hours.  In addition, there continue to be areas with localized flooding in other areas of the County.   Drivers are urged to use caution, and keep headlights on while driving during the rain.

Flooding in Contra Costa County can result from many different sources such as backed-up creeks that overflow, drainage inlets that become blocked, levees that break, and heavy rainfall that overwhelms our storm drains and creeks.

If you’re concerned about flooding at your home or business, it’s not too late to visit one of the free sandbag stations located throughout the county.  Please note that you’ll need to bring a shovel, but bags and sand are available for free.   Find out details regarding County sandbag sites at

County Public Works Maintenance road crews maintain the storm drain inlets through a program of annual inspection and cleaning.  To report a clogged catch basin or drainage inlet please call the Public Works Maintenance Division at 925-313-7000 during work hours and after hours call Sheriff’s Dispatch at 925-646-2441.

No Thanks January 11, 2017 at 7:40 AM

It was still closed at Rodie’s when I went through at 515am. A few slides that were a few inches deep right around Morgan Territory.

Suzanne January 11, 2017 at 10:28 AM

Does anyone have an update as to when Marsh Creek Rd will reopen?

mom2boys January 11, 2017 at 12:05 PM

I work for the Sheriff Office out at the Detention Facility and myself and my coworkers were able to get thru about 7am this morning.

Scott January 11, 2017 at 1:17 PM

Google Maps is showing stopped traffic at roadies as of 1PM:,-121.9026797,18.29z/data=!5m1!1e1

AJC January 11, 2017 at 2:30 PM

Marsh Creek is still closed as of 2:30pm.

Deltadan January 11, 2017 at 6:00 PM

Closed on Clayton side @430pm 1/11/17

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