#TBT to March 1917 with this view of the 6th Street bridge from the Bessemer Building in downtown Pittsburgh. This bridge was replaced in 1928 with the current one, known now as the Roberto Clemente Bridge. The Bessemer Building was demolished in 1964. Today&#x27;s #throwbackthursday photo is from the F. Theodore Wagner Photographs, Detre Library &amp; Archives at the History Center. #bridge #bridges #pittsburgh #pittsburghbridges #downtownpittsburgh #rivers #skyline #cityscape #pittsburghhistory…