the Hörn. The three-segment bascule bridge folds up into the shape of the capital letter N to allow for ship and boat traffic.

Two of the first folding bridges were built in Chicago by Shailer & Schniglau out of steel. The first stood between 1891 and 1899 at the Weed Street. The second was built in 1893 but was demolished 10 years later due to it being repeatedly out of service and two boat collisions in 1900. It had a 89-foot span and a width of 35 feet.left