U.S. seeks spillway channel excavation at Canton Lake Dam

The U.S. Army Corps of Engineers seeks bids to perform the remaining excavation that will allow flows into a new auxiliary spillway at Canton Lake Dam on the North Canadian River in Oklahoma. A site visit is scheduled April 30 with bids due May 15.

Canton Dam, a 68-foot-tall, 15,140-foot-long earthfill embankment, includes a 778-foot-wide service spillway at the right abutment with 16 tainter gates. Corps hydraulic studies found the existing spillway is unable to discharge a probable maximum flood and the dam is likely to fail during a major flood.

To address the inadequate spillway capacity, the Corps began construction of an auxiliary spillway at the right abutment. In 2011, the Corps awarded a contract to ASI Constructors Inc. for construction of a concrete weir and hydraulic structures as part of the auxiliary spillway. The Corps chose a Fusegate system from Hydroplus Inc. for the new spillway.

The Corps’ Tulsa District now seeks bids for Phase 2 of the auxiliary spillway channel excavation to remove the remaining soil plug that prevents lake flows into the new spillway. Work includes reshaping some dam embankment, diaphragm walls, a cofferdam and dewatering. The work is valued at $25 million to $50 million.

A solicitation notice may be obtained from the Federal Business Opportunities Internet site, www.fbo.gov, by entering Solicitation No. W912BV14R0039 in the “Keyword/Solicitation #” box. A site visit is scheduled at 1 p.m. April 30 with registration required by e-mail to the address below by April 28.

Bids are due May 15. For information, contact Brian Abel, U.S. Army Corps of Engineers, Tulsa District, CESWT-CT, 1645 S. 101st East Ave. Tulsa, OK 74128; (1) 918-669-7407; E-mail: brian.j.abel@usace.army.mil.

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