Lost (31,828)
Lost 1937 (91)
Lost during 1930s (1,277)
Lowell, Massachusetts (34)
Massachusetts (1,255)
Merrimack River (61)
Middlesex County, Massachusetts (259)
| Owned by city (6,284)
Rail-and-Road (403)
Replaced by new bridge (21,709)
Streetcar (292)
Through truss (19,042)
Truss (38,331)
Whipple truss (497)
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