Spillway, canal work sought by U.S. for 27.7-MW Minidoka

The Bureau of Reclamation seeks bids for construction of spillways and canal headworks to rehabilitate 27.7-MW Minidoka Dam on the Snake River in Idaho. Bids are due May 4.

Reclamation issued a record of decision in September 2010 calling for replacement of a spillway and canal headworks cited in an environmental impact statement for Minidoka Dam. Minidoka is an 86-foot-tall zoned earthfill structure that began operating in 1909.

The agency said concrete of the 2,237-foot-long wood and concrete spillway, stoplog structure piers, and canal headworks has deteriorated to the point where it could fail soon. In addition, the headworks for the canals that run on the north and south sides of the dam show visible signs of deterioration.

A proposal to raise the height of the dam five feet is on hold. The Idaho Legislature is funding studies of enlarging the dam to secure more reservoir storage.

Reclamation currently seeks a contractor to furnish and construct a new south gated spillway, north and south roller-compacted-concrete dikes, north and south side canal headworks, and north and south RCC overflow spillways. Work also includes modifications to the existing north gated spillway. The work is valued at between $10 million and $25 million.

A solicitation notice may be obtained from the Federal Business Opportunities Internet site, www.fbo.gov, by entering solicitation No. R11PS10003 in the “Keyword/Solicitation #” box.

Bids are due May 4. For information, contact Susie Kramer, Contracting Officer, Bureau of Reclamation, PN Regional Office, 1150 N. Curtis Road, Suite 100, Boise, ID 83706; (1) 208-378-5156; E-mail: skramer@usbr.gov.

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