Merrimack County

Barnstead Road Bridge   [Map]
Concrete rigid frame bridge over Suncook River on Barnstead Road (NH-107)
Open to traffic
Built 1934
Bement Covered Bridge   [Map · Street View]
Covered bridge over West Branch Brook on Bradford Center Road in Bradford
Open to traffic
Built 1854; rehabilitated 1964
Borough Road Bridge   [Map]
Concrete arch bridge over Smith River on Borough Road in Hill
Replaced by a new bridge
Built 1930
Cilleyville Covered Bridge   [Map]
Covered bridge over Pleasant Brook in Andover
Closed to all traffic
Built 1887; rehabilitated 2003
Contoocook Railroad Bridge   [Map · Street View]
Lattice through truss bridge over Contoocook River on former Boston & Maine Railroad
Open to pedestrians
Built 1889
Dalton Bridge   [Map]
Covered bridge over Warner River on Joppa Road West in Warner
Open to traffic
Built 1853; rehabilitated 1963
Depot Street Bridge   [Map]
Through truss bridge over Merrimack River on Old Canterbury Road in Boscawen
Closed to all traffic
Built 1907, closed in 1965
Edna Dean Proctor Bridge   [Map]
Concrete arch bridge over Contoocook River on NH 114 in Henniker
Open to traffic
Built 1939; rehabilitated 2001
Keniston Covered Bridge   [Map]
Covered bridge over Blackwater River on Bridge Road in Andover
Open to traffic
Built 1882
Last Street Bridge   [Map]
Wooden bridge over Sucker Brook on Last Street in Andover
Open to traffic
Built 1936
Lilac Bridge   [Map · Street View]
Bypassed through truss bridge over Merrimack River in Hooksett
Closed to all traffic
Built 1909; Repaired 1936; Bypassed in 1976
Lower Ridge Road Bridge   [Map]
Concrete arch bridge over Academy Brook on Lower Ridge Road in Loudon
Open to traffic
Built 1931
Main Street Bridge   [Map]
Stone arch bridge over Suncook River on Main Street in Pittsfield
Open to traffic
Built 1942
Main Street Bridge   [Map]
Stone arch bridge over Lake Todd Outlet on Main Street in Bradford
Open to traffic
Built 1929; rehabilitated 1935
Manchester Street Bridge   [Map]
Lost Pratt through truss bridge over Merrimack River on Manchester Street
Replaced by new bridge
Built 1933; replaced 1998
Maple Street Bridge   [Map · Street View]
Wooden bridge over abandoned NHRR on Maple Street in Andover
Open to traffic
Built 1930
NHRR Bridge   [Map]
Wooden bridge over Roy Ford Road on abandoned NHRR in Danbury
Open to pedestrians only
Built 1940
NHRR Bridge
Wooden bridge over Chance Pond Road on abandoned NHRR in Franklin
Open to traffic
Built 1936
Old Town Line Road Bridge   [Map]
Concrete arch bridge over Colby Brook on Old Town Line Road in Warner
Open to traffic
Built 1914
Patterson Hill Road Bridge   [Map · Street View]
Through truss bridge over Contoocook River on Patterson Hill Road in Henniker
Open to traffic
Built 1915; rehabilitated 2001
Pineground Bridge   [Map]
Lenticular through truss bridge over Suncook River in Chichester
Open to pedestrians
Built 1887 by the Berlin Iron Bridge Co.
Pingree Bridge   [Map · Street View]
Pratt pony truss bridge over Blackwater River on Mountain Road
Replaced by a new bridge
Ramsdell Road Bridge   [Map]
Through truss bridge over Contoocook River on Ramsdell Road in Henniker
Open to traffic
Built 1937
Rowell's Bridge   [Map · Street View]
Covered bridge over Contoocook River on West Hopkinton Road in Hopkinton
Open to traffic
Built 1853; rehabilitated 1996
Sewalls Falls Road Bridge   [Map · Street View]
Through truss bridge over Merrimack River on Sewalls Falls Road
Open to traffic
Built 1915; rehabilitated 1936
Smith River Bridge   [Map]
Slab bridge over Smith River on Old Nh 3a
Open to traffic
Built 1999
Smith River Bridge   [Map · Street View]
Concrete arch bridge over Smith River on NH 3A in Bristol
Open to traffic
Built 1940
Soucook River Bridge   [Map · Street View]
Concrete tee beam bridge over Soucook River on NH- 9
Open to traffic
Built 1936; rehabilitated 1989
Sulphite Railroad Bridge   [Map]
Pratt deck truss bridge over Winnipesautee River on Former Boston & Maine Railroad (originally Tilton & Franklin Railroad)
Closed to all traffic
Built 1896 as Covered Pratt Deck Truss, Abandoned 1976, Outer wood burned off by vandals in 1980
Suncook Connector Bridge   [Map]
Deck truss bridge over Suncook River and Buck Street on US 3 in Suncook
Open to traffic
Built 2007
Suncook River Bridge   [Map]
Lost deck truss bridge over Suncook River on US 3 in Allenstown
Replaced by similar double-decker truss bridge
Built 1931; replaced 2007
Valley Road Bridge   [Map]
Wooden bridge over abandoned NHRR on Valley Road in Andover
Open to traffic
Built 1930; rehabilitated 2002
Water Street Bridge   [Map]
Lost Girder bridge over BMRR on US Hwy. 3/Water Street
Replaced by new bridge
Built 1936; Replaced in 2000
Waterloo Bridge   [Map]
Covered bridge over Warner River on New Market Road in Warner
Open to traffic
Built 1840; rehabilitated 1970
Western Avenue Bridge   [Map · Street View]
Through truss bridge over Contoocook River on Western Avenue in Henniker
Open to traffic
Built 1933; rehabilitated 1988