9TH & 10TH STREET SUBWAY VIADUCT
This 4,400-foot-long steel trestle was completed in 1933 to carry the IND subway. The viaduct, which houses the Smith/9th Street subway stop, crosses the Gowanus Canal and, at 87½ feet above the canal, is the city’s tallest. Beneath the viaduct is a beautiful vista looking north along the canal. The shape of the waterway bending north retains that of the 19th-century commercial waterway, and its docks, basins, bulkheads and industrial buildings are still used today.