First iron truss bridge in the nation completed in Pennsylvania
An iron truss bridge, constructed of prefabricated sections, was completed overnight between Saturday and Sunday on the main line of the Philadelphia and Reading Railroad Company near West Manayunk, Pennsylvania. A little over ten yards long, it was the first of its kind in the country. (By John Osborne)
Source Citation
Joseph Nathan Kane, ed., Famous First Facts (New York: H.W. Wilson Company, 1981), 133.