Effort to expand Los Vaqueros Reservoir Marsh Creek Bridge work approved

By Chris Campos Staff Writer

BRENTWOOD Replacements for the damaged Marsh Creek Road Bridges in Brentwood are on the way following approval Tuesday morning by the county Board of Supervisors for a $12 million contract with the Granite Rock Company.

The project will replace two bridges on Marsh Creek Road, according to Jenna Caldwell of the county Public Works Department. Bridge 143 is 1.5 miles northwest of Deer Valley Road near the Clayton Palms Community, and Bridge 145 is 3 miles east of Deer Valley Road near the road transition to Camino Diablo. Construction is anticipated to start late May 2023 and be completed by December 2024, barring unforeseen circumstances.

By Chris Campos Staff Writer

BRENTWOOD Los Vaqueros

Reservoir, the biggest watering hole in Contra Costa County, isn’t full despite the onslaught of rain storms that drenched the Bay Area this winter.

Despite a record snowpack in the Sierra, our local reservoir gets fed only a small trickle from Marsh Creek. Besides rainfall, the Contra Costa Water District (CCWD) relies on four Delta intake pumps near Tracy to fill the 160,000 acre-feet capacity of the reservoir, which covers 1,900 acres of land in the southeast corner of the county. The reservoir’s current level is at about 105,300 acre-feet. One acre foot is about 326,000 gallons. see Reservoir page 14A

“They’re pumping 24/7 and working hard” to fill the reservoir, according to Jennifer Allen, the CCWD director of public affairs.

Caldwell noted Tuesday, “The existing bridges were constructed in the 1930s. They are exhibiting signs of deterioration and don’t meet current roadway design standards. The new bridges are designed to meet current roadway standards and will increase the hydraulic capacity of Marsh Creek under the bridges.” see Bridge page 14A

The work to be done generally consists of the replacement of two existing bridges with single-span concrete wide-flange girder bridges and reconstruction and realignment of the approach roads to each bridge, located along Marsh Creek Road.

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