Granite Keystone Bridge
United States · Americas
About
The Granite Keystone Bridge is a historic bridge that carries Granite Street (Massachusetts Route 127) over the former railroad that transported granite from Pigeon Hill to Granite Pier in Rockport, Massachusetts. The bridge arch was built in 1872 in eleven weeks. Its single arch spans 65 feet (20 m) and is 32 feet (9.8 m) wide. The bridge was added to the National Register of Historic Places in 1981.
Adapted from Wikipedia (CC BY-SA)。Photography via Wikimedia Commons.