The US Army Corps of Engineers, Walla Walla District is seeking sources for a construction project titled, Lower Snake and Clearwater Rivers Navigation Maintenance Dredging.
This will be a fixed price construction contract. Place of performance is Franklin, Whitman, Asotin, and Garfield Counties in Washington State and Nez Perce County in Idaho.
Construction magnitude is between $5 mln and $10 mln.
The work consists of mechanical dredging of the federal navigation channel, port berthing areas, and a navigation lock approach at four locations on the Snake River and lower Clearwater River. The work will also include the transportation to and disposal of material at Snake River Mile 116.
Disposal will include selective placement of material to construct an underwater bench at specified elevation and shape to create fish habitat.
The work will also include pre and post bathymetric surveys, for the dredge and disposal areas for topographic control and quantity calculations, and water quality monitoring.
Total volume of dredged material for all four locations is approximately 400,000 to 500,000 cubic yards. Disposal will be in-water at River Mile 116.
More info
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Source: fbo.gov; April 15, 2013