Thursday June 1, 2023

The Construction Specifier

Granite Construction Inc. (Granite) has been awarded an approximately $173 million contract by the U.S. Army Corps of Engineers (USACE), Sacramento District, to construct various elements along the Sacramento River in California.

The project is designed to reduce regional flood risk along the river by decreasing water surface elevation. Granite’s work involves widening the weir, as well as the construction of a new fish passage structure and a vehicular bridge connecting Old River Road to just north of West Sacramento. The fish passage structure will help prevent federal and state-listed species from being stranded in the river and within the bypasses after flood events.

The 25-span vehicular bridge will allow local traffic to cross over the new weir structure and maintain access to communities north of the project.

Construction will include extensive excavation and the building of new levee embankments. Structural concrete for the project will include the weir crest structure with an adjoining stilling basin, the fish passage and a fish ladder facility, and the vehicle bridge structure. Additionally, riprap will be placed along the levee embankments. More than 25,401 tonnes (28,000 tons) of aggregates will be supplied by Granite’s Capay Aggregate Plant for various portions of the project, including road base and structural backfill materials. Further, 5,433 tonnes (6,000 tons) of hot mix asphalt (HMA) will be supplied by Granite’s Bradshaw Asphalt Plant and utilized to build roadways and access routes.

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