(Smithfield St., 360', 1881-83) in Pittsburgh, Allegheny County, PA. PA885 (Boulevard of the Allies) E. 0.5 miles from jct with I279 exit 6 in Pittsburgh, S. on Smithfield St. 0.1 miles to the bridge. Original bridge on this site was an 8-span covered bridge built 1818. (N40 26.100 W80 00.120) Photo by Delores Learn Deltondo 07-2003.