Stinger Welding is an AISC certified major bridge fabricator with fracture-critical endorsement. Stinger provides structural detailing, professional project management, fabrication and erection, and delivery. Stinger fabricates modular expansion joints with 160mm through 720mm expansion ranges as standard products. Stinger fabricates bridges that are utilized for vehicles, railroads, predestrians and utilities. Expansion joints consist of strip seal, compression seal,finger plate,modular and custom fabricated joints. In 2009, while the SF-Oakland Bay Bridge was closed for installation of the 3 million Pound Stinger Fabricated Truss, a major crack was found elsewhere on the Bridge. Stinger went into action to fabricate and deliver 18,000 pounds of repair assembles in 24 hours