Chelsea, Massachusetts United States | |
42° 23' 7.08'', -71° 2' 21.12'' | |
Boston Harbor |
Bridge type | Bascule |
Closed vertical clearance | 20' |
Schedule | The bridge shall open on signal which is two prolonged blasts followed by two short blasts then one prolonged blast. The acknowledging signal is three prolonged blasts when the draw can be opened immediately and is two prolonged blasts when the draw cannot be opened or is open and must be closed. |
Comments | All bridges along the Chelsea River will open on this signal. |