Most Dorman Long bridges are big, heavy structures with a sense of immenseness to the steelwork. Up close, Sydney is massive. Newcastle too. That one in Zim is a structural engineers dream; lightweight and minimalist.
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Not strictly a bridge in the usual terms but the symbol of Teessides, sadly past industrial might, built with steel from local foundries in the late 19th century and still running today.
Originally worked by raising and lowering the south end of the bridge superstructure from a winch house at the South end, the North end was tensioned and pivoted the 'suspended car' would slide along the bridge superstructure on steel wheels.Now the car runs on electric motors and the bridge is fixed