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Lower Silver Creek Flood Protection

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Lower Silver Creek Flood Protection

This flood protection project included two areas of work. Reach 1 required approximately 80,000 cubic yards of excavation and construction of a 2,600-foot-long earthen channel with vegetated gabions. There were 3,500 feet of flood wall between Reaches 1 and 2, and 4.1 acres of new vegetation throughout the project.

Reach 2 required approximately 50,000 cubic yards of excavation for the construction of a 1,200-foot-long rectangular concrete lined channel. Excavation work was performed in 15 -foot cuts and required one side of the channel to be shared with 36 in cast-in-drilled-hole piles, spaced at 6-foot centers and 26 feet deep.

The existing stream was diverted for each individual reach. To do this, Shimmick installed an earthen dam upstream, running 3,000 feet of 24 in HDPE downstream back into the channel, and pumping with a 12-inch submersible pump.

Project Details

Location:San Jose, CA
Amount: $14.6.M
Delivery Method:DBB
Client Name:Santa Clara Valley Water District
Duration: 2002 – 2004