This study analyzes the impacts of the Goodwill Games on traffic congestion in the Seattle-Tacoma metropolitan corridor. The study concentrates on the combined impacts of increased traffic volumes resulting from Goodwill Games events, and the traffic mitigation measures designed to relieve the congestion resulting from those events. The study emphasis is on traffic congestion near the largest venues, Husky Stadium, Cheney Stadium, the Tacoma Dome, and the Seattle Center. The study considers traffic volume, traffic speed, incident response, and transit ridership data from a number of sources. The basic conclusions of the report are that in most cases the increased traffic expected for the Goodwill Games and the savings from measures implemented to mitigate those volume increases balanced each other. The result was that traffic conditions remained fairly normal throughout the Games. In some instances, traffic improved (for example, on many days peak period traffic speeds increased on SR-520), and in other instances, particularly when incidents occurred during peak travel periods, traffic conditions were worse than normal. However, average traffic conditions changed little during the Games.