By Kelly Kalfsbeek, Community & Media Relations Coordinator, PIO, Contra Costa County Public Works Department
Antioch and Brentwood, CA – Contra Costa County Public Works will perform road traffic safety improvements at four sites along Deer Valley Road between Empire Mine Road and Marsh Creek Road, from Tuesday, September 8, 2026, through Friday, November 20, 2026, barring unforeseen circumstances. Work will occur between 7:00 a.m. and 5:00 p.m., Monday through Friday, excluding holidays, weather permitting.
Traffic control will be used at each site with restrictions in place to minimize impacts during commuting hours. Message boards will alert drivers to the work. Drivers should expect delays through the work zones and consider alternative routes during working hours.
The project is intended to enhance safety at four locations on Deer Valley Road. Funding for this project is provided by the Federal Highway Safety Improvement Program (HSIP) and Local Gas Tax SB1. For more information about this project, visit www.contracosta.ca.gov/Deer-Valley-Road-Traffic-Safety-Improvements
About Contra Costa County Public Works Department:
The Contra Costa County Public Works Department (CCCPWD) is responsible for the maintenance and operation of over 650 miles of roads, 79 miles of streams and channels, and over 150 County buildings. CCCPWD services include parks and recreation, sandbag distribution, flood control, road and facilities maintenance, and storm water management. CCCPWD operates two airports, Buchanan Field Airport in Concord and Byron Airport in Byron. For more information about CCCPWD, please visit us at: www.cccpublicworks.org.

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