19th Century (6,912)
Boston & Maine Railroad (364)
Built 1867 (47)
Built during 1860s (454)
Childs truss (13)
Covered (1,524)
Covered Railroad Bridge (65)
Lost (22,457)
Lost 1919 (32)
| Lost during 1910s (436)
Merrimack County, New Hampshire (85)
New Hampshire (592)
Owned by railroad (11,169)
Railroad (14,409)
Replaced by new bridge (15,001)
Through truss (14,109)
Truss (31,314)
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