CONCORD -- The city plans to begin repair work soon on 17 of its 31 bridges and also will build a new one, over Pine Creek, connecting Commerce Avenue with Waterworld Parkway.

The bridge work was recommended by the city's Engineering Department in coordination with the federal Seismic Retrofit Program.

"I think this is something the whole state is looking at," City Manager Valerie Barone said. "Ensuring the safety of our bridges throughout the city continues to be one of our highest priorities."

The first six of the citywide bridge maintenance projects will require only California Environmental Quality Act documentation and no environmental impact report. These repairs will involve mainly decking, concrete restoration, joint seal replacement, unsound concrete replacement, repair of deck seals and repair to the roadway slopes adjacent to the bridges, said Mario Camorongan, Concord's capital improvement projects manager.

Mayor Dan Helix said all maintenance work has been preapproved by the Federal Highway Administration. Work on the first six spans can start as soon as Caltrans formally confirms the assignment of two separate project numbers, separating the first six from the original application for 17 bridges. Caltrans can proceed with the EIR approval process on the remaining 11 projects while the first six bridges are being repaired.


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"We are pleased that Caltrans has approved 17 of our 21 bridge repair (project applications)," Helix said.

The EIR requirement is triggered by the necessity for work in the creek bed areas, Camorongan said.

In June 2011, Caltrans inspectors joined Concord engineers for a field survey of 21 potential bridge repair projects. Caltrans officials agreed that 17 met the eligibility requirements for Caltrans grant funding, Camorongan said.

"Only 11.47 percent of the cost of the projects will come from local funds," he added.

The bridge repairs will cost $2,477,850, with $1,983,400 of that to be paid for with grant funding, according to a city report.

Camorongan said construction of the Commerce Avenue Roadway Extension and bridge at Pine Creek has been in the process of planning and approval since the 1990s. It will link Commerce Avenue, southwest of Concord Boulevard near Highway 242, to a new two-lane Commerce Avenue Extension vehicular roadway and a pedestrian bridge, according to project manager Mark Migliore.

He hopes work can begin next year. The new bridge will connect Commerce Avenue and Waterworld Parkway, using a southern portion of the Waterworld parking lot.

Contact Dana Guzzetti at dguzzetti10@gmail.com or 925-202-9292.

Bridge repairs
Among the Concord roadway bridges scheduled for repairs are Willow Pass Road over Mount Diablo Creek and over Walnut Creek; Kirker Pass Road over Mount Diablo Creek; Court Lane over Galindo Creek; Claudia Drive over Holbrook Channel; San Miguel Road over Pine Creek; Concord Avenue over Walnut Creek; St. Francis Drive over Galindo Creek; Concord Boulevard over Mount Diablo Creek; Cowell Road over Mount Diablo Creek; Ygnacio Valley Road over Galindo Creek; Diamond Boulevard over Walnut Creek; Whitman Road over the SDM Channel; Ayers Road over Mount Diablo Creek; and Walnut Avenue over the Contra Costa Canal.