The Rall-type bascule bridge uses a system of counterweights, gears and motors to raise the “leaves” of the bridge up and down. On the Broadway Bridge, two 75-horsepower motors turn the ...

Broadway Bridge is a Rall-wheel, double-leaf drawbridge that ... With the longest span of any bascule bridge in the world, it’s also listed on the National Register of Historic Places.

T he Broadway Bridge is one of just a handful of surviving Rall-type bascule bridges left in the country — a rare drawbridge design that rolls back and lifts at the same time to allow waterway ...

the seventh-longest bascule bridge and only one of three remaining Rall bridges in use in the U.S. The mechanism allows the old nickel-chrome-steel casting wheels of 13.8 tons each to roll back ...