News Occoquan remembers Hurricane Agnes 50 years after bridge collapse By Potomac Local News Published August 20, 2022 at 11:00AM Collapsed US1 bridge built partially on the 1870s Washington Southern Railway bridge pillars. Image courtesy of the Library of Virginia [Prince William County Office of Historic Preservation] This article is FREE to read. Please Sign In or Create a FREE Account. Thank you. Author Potomac Local News View all posts #News #Occoquan #Woodbridge