Offsite construction of arch span steel allowed builders of Hastings Bridge, said to be the longest free-standing tied-arch span in North America, to execute one of the heaviest bridge moves ever in the U.S. It also accelerated the schedule and minimized environmental disturbance during construction of the 545-ft-long main span, which straddles the Mississippi River.
Float-in and lift were completed in a 48-hour window during which the span was transported downstream and placed in its final position. Operations began with self-propelled modular transporters lifting the span off shoring towers and conveying it to a flotilla of barges.