The U.S. Army Corps of Engineers - St. Paul District seeks a contractor to fabricate Strut Arm Assemblies for Miter Gates, used at Locks on the Upper Mississippi River. The strut arm assemblies are 18 ft 4 inches in total length, fabricated from various grades of steel castings and machined components. Fabricator must have one of the following AISC certifications: IBR: Certified Bridge Fabricator: Intermediate with fracture critical endorsement; ABR: Certified Bridge Fabricator: Advanced with fracture critical endorsement; or HYD: Certified Hydraulic Steel Structures Fabricator (includes fracture critical endorsement). The fabricator must also be certified under the AISC Quality Certification Program with an endorsement for applying sophisticated paint systems (SPS) in Category P1, P2, or P3. The contract will involve extensive QC and QA testing for the casting, machining and painting. Strut arm assemblies will be delivered to USACE Service Base at Fountain City, WI no later than 30 March 2028. This Invitation for Bid solicitation is 100% set-aside for small businesses under NAICS 332312, with an SBA size standard of 500 employees. Bids must be submitted via the PIEE module. No bid bonds are required. Offerors must be fully registered in the System for Award Management (SAM), to include FAR and DFARS Representations and Certifications, to be eligible to receive Federal Government. --- Click on the PIEE Solicitation Module Link for W912ES26BA020 in the Attachments/Links section to view and download documents. -- Please submit questions via the Q and A tab in PIEE. -- Amendment 0001 has been added, effective 18 August 2026. This amendment extends the solicitation close by one week. The bid opening will now be held on September 9, 2026 at 1:30 PM (CDT). Additional instructions about the bid opening were added to the Notes to Bidders document.--- Bid Opening held on September 9, 2026, at 1:30 PM (CDT). Three offers received prior to solicitation close. Bid Opening Attendance Roster, Bidder List & Record of Bids, and Bid Abstract posted.