AuSable Chasm Bridge is a historic steel arch bridge

Arch bridge

An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side...

 with concrete and stone faced approach spans that carries US 9 over the Ausable River at AuSable Chasm

Au Sable, New York

Au Sable, or Ausable, is a town in Clinton County, New York, United States. The population was 3,146 at the 2010 census. The name is from a river that flows through the town and means "Of the sand."...

 in Clinton County, New York

Clinton County, New York

Clinton County is a county located in the U.S. state of New York. As of the 2010 census, the population was 82,128. Its name is in honor of the first Governor of New York as a state, George Clinton. Its county seat is Plattsburgh.-History:...

. 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

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

in 1999.