Founded in 1960, Williams Industries is a construction company that provides steel for bridges and highway girders. Based in Manassas, Va., it has various subsidiaries, including Williams Bridge Company, Williams Steel Erection, Piedmont Metal Products and S.I.P., of Delaware. The company s subsidiaries provide a wide range of products for the industrial, commercial and institutional construction markets. Its construction and manufacturing services include steel and precast concrete erection, miscellaneous metals installation, fabrication of welded steel plate girders, and construction, repair and rehabilitation of bridges. The company also offers crane rental and heavy and specialized hauling and rigging services. Additionally, it provides rolled steel beams and light structural and other metal products.