U.S. Army Engineer District Walla Walla

Release: Dec 10, 2025

Close: Jan 7, 2026

The US Army Corps of Engineers, Walla Walla District issued a Sources Sought (W912EF26RSS05) seeking interested business sources for the Dworshak Dam Powerhouse Roof Replacement at Dworshak Dam in Ahsahka, Idaho. The sources sought (not a solicitation) describes removal of existing roofing and installation of a new fully-adhered roofing assembly, with an estimated construction magnitude of $5,000,000–$10,000,000 and an expected ~300 day period of performance; the government expects award of a contract in January 2027 with on-site work May–November 2027. Responses are requested by January 7, 2026 and respondents should submit capability/project examples and business size/status information to the listed USACE contacts.

Release: Dec 9, 2025

Close: Jan 7, 2026

Dam powerhouse roof replacement. The scope of the work is to provide a durable waterproofing system for the dam powerhouse and ancillary roofs. This will be achieved by removing the existing roofing system in its entirety down to the structural roof decks, followed by the installation of a new fully adhered roofing assembly to include gypsum roof sheathing, a vapor retarder, polyisocyanurate foam roof insulation, cover board, and 90-mil EPDM membrane. A 2-year installer warranty and a 30-year manufacturer warranty are required.

Release: Dec 5, 2025

Close: Feb 5, 2026

The U.S. Army Corps of Engineers (USACE), Walla Walla District, is soliciting proposals to procure spare transformers for the Lower Snake River hydroelectric powerhouses. The solicitation requires Hitachi-brand bushings (a single-source item) for a portion of the contract; the estimated cost for the brand-name portion is $1,691,335.30 and the overall transformer contract is estimated at about $40 million. The opportunity is a procurement (not a grant), is active, and proposals are due Feb 4, 2026 at 5:00 PM PST.