Because of the September 11, 2001 terrorist attacks, the Hoover Dam Bypass project was expedited and traffic across the dam was restricted. Some types of vehicles were inspected prior to crossing the dam while semi-trailer trucks, buses carrying luggage, and enclosed-box trucks over long were not allowed on the dam at all. That traffic was diverted south to a Colorado River bridge at Laughlin, Nevada. Once the bypass opened on October 19, 2010, all through traffic was rerouted on it; the roadway on the dam is now open only to employees and dam visitors.