This Invitation for Bid (IFB) consists of removal of the existing left and right abutment concrete gutters (ditches), and construction of a new flexible articulated concrete block mattress along the existing ditch horizontal and vertical alignments at Patoka Lake Dam in South Dubois, Indiana. All work shall be performed in strict compliance with the attached specifications and all other terms, clauses, and conditions incorporated herein.Bids are due on 14 August 2025 at 10:00 AM Eastern Time.NOTE: THIS RFQ IS 100% SET ASIDE FOR SMALL BUSINESS. The NAICS code for this procurement is 237990. The size standard is $45M.The solicitation will be available on the web only. Telephone and Fax requests for this solicitation will not be honored. Project files are Portable Document Format (PDF) files and can view, navigated, or printed using Adobe Acrobat Reader. To download the solicitation for this project, contractors are required to register at the Federal Business Opportunities. Amendments will be available from the beta.sam.gov website by download only.Prior to submission of quotes all contractors must have an active registration in the System for Award Management (SAM) database. To register or update information go to http://www.SAM.gov. Questions may be addressed to adyson.medley@usace.army.mil. This announcement serves as the advance notice.