Marsh Creek Road Bridges Replacement Project to begin construction May 30

Marsh Creek Road Bridge Replacement Project map. Source: CCC Public Works Dept.

By Kelly Kalfsbeek, PIO, Community & Media Relations Coordinator, CCC Public Works Department

The Contra Costa County Public Works Department will begin construction of the Marsh Creek Road Bridges Replacement Project starting on Tuesday, May 30, 2023, through March 2025, barring unforeseen circumstances. Work will occur from 7 a.m. through 5 p.m., Monday through Friday (excluding holidays), weather permitting. Work will take place on Marsh Creek Road at Bridges 143 and 145. Bridge 143 is located approximately 1.5 miles northwest of Deer Valley Road near the Clayton Palms Community. Bridge 145 is located approximately 3.0 miles east of Deer Valley Road near the road transition to Camino Diablo.

Traffic control will be used. Restrictions will be in place to minimize impacts during commuting hours. Message boards will alert drivers about the work. Drivers should expect delays through the construction zone and consider alternative routes during working hours.

The project will replace two (2) bridges on Marsh Creek Road with two (2) new concrete bridges. Work also includes reconstruction of the bridge approach roadways and construction of drainage facilities.

Funding for this project is provided by the federal Highway Bridge Program and local Gas Tax funds.

To learn more about this project, please visit:

About Contra Costa County Public Works Department:

Contra Costa County Public Works Department (CCCPWD) maintains over 660 miles of roads, 150 miles of streams, channels, and other drainage and over 150 County buildings throughout Contra Costa County. CCCPWD provides services such as Parks and Recreation, Sandbag Distribution and Flood Control throughout the unincorporated areas of Contra Costa County. CCCPWD operates two airports, Buchanan Field Airport in Concord, and Byron Airport in Byron. For more information about CCCPWD, please visit us at:

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