Out The Window 0 ▲ Old Structures Engineering 122 days ago · History · hide · 0 comments From October 2018, as I was taking a train to Albany, the demolition of the old Tappan Zee Bridge, with the new bridge behind it: That’s a big floating crane because disassembling cantilever trusses needs both careful sequencing and the ability carry off big pieces. The truss portion of the old bridge is, of course, […] No comments yet. Log in to reply on the Fediverse. Comments will appear here.