The Department of Defense, specifically the Army Contracting Command – Rock Island, is seeking proposals from qualified small businesses to supply railroad materials for modernization projects at the Sierra Army Depot in California. The procurement involves a total small business set-aside for various materials, including wood ties, lag screws, 136# tie plates, and complete turnout kits, which are essential for upgrading existing rail systems to 136# rail specifications. These materials will be delivered to the Sierra Army Depot in Herlong, CA, and must comply with the specifications outlined in the Statement of Work and AREMA standards. Interested vendors must submit their proposals via email to the primary contact, Carrie Kammer, at carrie.a.kammer-buchanan.civ@army.mil, ensuring they are registered in the System for Award Management (SAM) prior to submission. The solicitation is available on SAM.gov, and all proposals must account for the complete list of required items to be considered for award.