7.-1923,-July-27-Brdge-outbound-Traffic-WEB. June 8, 2014 1300 × 913 Seattle Now & Then: The Lake Union Dam Washout Until the Aurora Bridge was completed in 1932, the bascule at Fremont was busy enough to be considered the busiest bridge of its kind in the U.S.A.. With the University Bridge it was one of the two primary funnels into the north city.