This report documents a study to evaluate promising bridge deck expansion joints with the intent of finding the most maintenance free and water-proof expansion devices for use in Colorado. The evaluation included inspections and measurements during construction and post construction. The ability of a device to remain water tight is the most important quality used to determine the success of the device. Proper installation during construction is one of the most important factors which will ultimately determine the success of an expansion joint. Neoprene compression joint seals are recommended for future joints whenever possible. On flex joints have also been shown to perform well, however, further evaluations are required before firm recommendations are made.