Erie Canal: Second Genesee Aqueduct, also known as the Broad Street Aqueduct or Broad Street Bridge, is a historic stone aqueduct located at Rochester in Monroe County, New York. It was constructed in 1836–1842 and originally carried the Erie Canal over the Genesee River. The overall length of the aqueduct including the wings and abutments is 800 feet (240 m). The aqueduct is 70 feet (21 m) wide and has large parapets on either side. It is one of four major aqueducts in the mid-19th century Erie Canal system. In 1927, a roadbed was added to carry automobile traffic and named Broad Street. It also carried a part of the Rochester Subway.