Why Seattle Built—Then Buried—a Key Part of Its New Tunnel

Friday nights are usually a time for celebration—the end of the work week and the start of something far better. In Seattle though, this Friday marked the transition into a terrible time, one city officials are calling the period of maximum constraint. At 10 pm, the SR 99 Alaskan Way Viaduct—damaged in a 2001 earthquake and temporarily reinforced—officially closed, for good. Over the next three weeks, traffic-fearing Seattleites will stay home, flee town, or at least carpool.