Discover how two bridges were moved from their original locations using two very different, but equally complex, moving methods. Local bridge preservationists in Missouri attempt to transport a 137-ton railroad bridge right through the heart of downtown Kansas City. And in Iowa, the U.S. National Guard rallies to save a 128-year-old bridge using one of the most modern mega-moving tools available today: a Chinook Helicopter. Piece by piece, these massive bridges were carefully dismantled, transported under difficult conditions, and just as carefully put back together.