Lost (28,575)
Lost 1937 (59)
Lost during 1930s (872)
Lowell, Massachusetts (34)
Massachusetts (1,204)
Merrimack River (56)
Middlesex County, Massachusetts (257)
| Owned by city (6,086)
Rail-and-Road (397)
Replaced by new bridge (19,437)
Streetcar (292)
Through truss (16,839)
Truss (35,529)
Whipple truss (466)
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