The 16th Street Bridge is a through arch bridge that spans the Allegheny River in Pittsburgh, Pennsylvania. The bridge was constructed in 1922 with a length of 1,900 feet (580 m) and a width of 40 feet (12 m). The bridge was listed on the National Register of Historic Places in 1979. The 16th Street Bridge is one of the more popular bridges in the city of Pittsburgh and provides easy access to the Strip District and the North Shore.
Days after the infamous St. Patrick's Day Flood of 1936, reports spread on March 20 that the bridge collapsed from the pressure of the receding flood waters and debris, prompting Pittsburgh Police Chief, Jacob Dorsey to close all city bridges for fear of receding waters and debris weakening or collapsing them.