All trade contractors need to complete our Subcontractor Qualification Application to be eligible to bid on our projects and contract with Clark. Clark is dedicated to building a diverse network of trade contractors and suppliers.Learn about current bid and contract opportunities available to consultants, service providers, contractors, vendors, or suppliers. Our experienced technicians and engineers can help you design, bid, and build a customized cabling and technology solution that meets all your requirements. On Center Software provides hundreds of ClarkDietrich Building Systems metal frame materials within it's Quick Bid database. FOR CONSTRUCTION OF. Washington Aqueduct McMillan North Clearwell Replacement. The subcontractor's guide to working with Clark Construction, including their history, how to prequalify, payment tips, and more. Clark construction is planning to participate in bidding for a project. See below for a list of our current projects out to bid.