AuSable Chasm Bridge is a historic steel arch bridge with concrete and stone faced approach spans that carries US 9 over the Ausable River at AuSable in Clinton County, New York. It was built in 1932-1933. The main span is 222 feet in length, with two 52 foot approach spans, for an overall length with approaches of 52 feet. It is approximately 40 feet wide, with a span height of 45 feet and overall height of 70 feet.It was listed on the National Register of Historic Places in 1999.