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Merrimack County

B&M - Penacook Lower Covered Bridge [Map]
Lost Childs through truss bridge over Contoocook River on Boston & Maine Railroad
Replaced by a new bridge
Built 1867; Repaired 1876; Replaced 1919

B&M - Penacook Upper Covered Bridge [Map]
Lost Town lattice through truss bridge over Contoocook River on Boston & Maine Railroad
Replaced by a new bridge
Built 1867; Replaced 1921

B&M - Suncook River Town Deck Truss [Map]
Lost Town lattice deck truss bridge over Suncook River on Boston & Maine Railroad
Collapsed
Built ?; Collapsed 1970

Barnstead Road Bridge [Map]
Concrete rigid frame bridge over Suncook River on Barnstead Road (NH-107)
Open to traffic
Built 1934

Bement Covered Bridge 29-07-03 [Map · Street View]
Covered bridge over West Branch Warner River on Bradford Center Road in Bradford
Open to traffic
Built 1854; rehabilitated 1964

BM - Franklin Covered Bridge [Map]
Lost covered bridge over Merrimack River on Boston & Maine Railroad
Collapsed
Built 1890; Center pier lost 1936; Collapsed 1945

BM - Keystone Lane Arch [Map · Street View]
Abandoned stone arch bridge over Keystone Ln on B&M Suncook Loop
Derelict/abandoned

BM - Marston Hill Road Bridge 94.92 [Map · Street View]
Deck plate girder bridge over Marston Hill Rd on BMRR/Northern Rail Trail
Open to traffic

BM - Smith River Bridge 113.84 [Map]
1914 Pony/through plate girder bridge over Smith River on B&MRR/Northern Rail Trail
Open to traffic
Built 1914

BM - Sulphite Railroad Covered Bridge 29-07-09 [Map]
Pratt deck truss bridge over Winnipesautee River on Former Boston & Maine Railroad (Franklin & Tilton Railroad)
Closed to all traffic
Built 1896 as Covered Pratt Deck Truss, Abandoned 1976, Outer wood burned off by vandals in 1980

BM - Suncook Loop Covered Bridge (E) [Map]
Lost Through truss bridge over Merrimack River on Boston & Maine Railroad
Destroyed by flooding
Built 1889; Closed 1935; Destroyed by Flooding 1936

BM - Suncook Loop Covered Bridge (W) [Map]
Lost Through truss bridge over Merrimack River on Boston & Maine Railroad
Destroyed by flooding
Built 1889; Closed 1935; Destroyed by Flooding 1936

BM - Winnipesaukee River Bridge [Map · Street View]
Abandoned timber stringer bridge over Winnipesaukee River and Winnipesakeee River Trail on Boston & Maine Railroad
Derelict/abandoned

BM/CM - Turkey Falls Bridge [Map]
Lost Through truss bridge over Merrimack River on B&MRR
Removed but not replaced
Built 1912

BM/CM - Turkey Falls Covered Bridge [Map]
Lost Through truss bridge over Merrimack River on Boston & Maine Railroad & Concord & Manchester Electric Railway
Replaced by a new bridge
Built ca. 1903; Replaced 1912

Borough Road Bridge [Map]
Concrete arch bridge over Smith River on Borough Road in Hill
Replaced by a new bridge
Built 1930

Boscawen-Canterbury Bridge [Map]
Through truss bridge over Merrimack River on Old Canterbury Road in Boscawen
Removed but not replaced
Built 1907, Closed in 1965; Demolished 2014

Chance Pond Brook Pedestrian Bridge [Map · Street View]
Lattice through truss bridge over Chance Pond Brook on Pedestrian Path
Open to pedestrians only

Cilleyville Covered Bridge 29-07-01 [Map]
Covered bridge over Pleasant Brook in Andover
Closed to all traffic
Built 1887; rehabilitated 2003

Concord Free Bridge [Map]
Lost Through truss bridge over Merrimack River on Bridge Street
Replaced by a new bridge

Contoocook Covered Bridge 29-07-63x [Map]
Lost Long through truss bridge over Contoocook River on Main Street/Park Avenue/Route 103
Removed as part of a WPA make-work project
Built 1853; Razed 1935

Dalton Covered Bridge 29-07-05 [Map · Street View]
Covered Queenspost/Long through truss bridge over Warner River on Joppa Road West in Warner
Open to traffic
Built 1853 by Joshua Sanborn; Rehabilitated 1963

Edna Dean Proctor Bridge [Map]
Concrete arch bridge over Contoocook River on NH 114 in Henniker
Open to traffic
Built 1939; rehabilitated 2001

Franklin Falls Dam Bridge [Map · Street View]
Pratt deck truss bridge over Dam on Pedestrian path
Open to pedestrians only
Built 1943

Franklin Falls Hydro Electric Plant #2 Bridge [Map · Street View]
Other through truss bridge over Winnipesaukee River on Pedestrian

Franklin Highway Sucker Brook Bridge [Map]
1929 Concrete culvert bridge over Sucker Brook on Franklin Hwy/NH11
Open to traffic
Built 1929

Henniker Road Covered Bridge 29-07-62x [Map]
Lost Covered Briggs lattice truss bridge over Contoocook River on Old Route 9 & 202
Replaced
Built 1862 Replaced 1936

High Street Bridge [Map · Street View]
Warren pony truss with alternating verticals bridge over Smith River on High Street
Closed to all traffic
Built 1913

Hill Bridge [Map]
Lost Through truss bridge over Pemigewasset River on road
Removed but not replaced

Hooksett Footbridge [Map]
Modern Pratt half-through truss bridge over Merrimack River on Pedestrian Walkway
Open to pedestrians
Built 2017 to replace previous Lilac Bridge

Hooksett Memorial Bridge [Map]
Steel stringer bridge over Merrimack River on Main Street
Open to traffic
Built 1976 to replace/bypass Lilac Bridge

Hopkinton Covered Railroad Bridge [Map · Street View]
Double Lattice through truss bridge over Contoocook River on former Boston & Maine Railroad
Open to pedestrians
Built 1889, Washed off abutments and restored 1936 & 1938; Abandoned 1962; Restored 1990; Major rehab 2003; Fire suppression and fire proofing 2009; Removal of center shelving 2017; Erosion control fixes, minor siding repairs, new staining 2019

I-393 East Side Drive Bridge [Map · Street View]
Steel rigid frame bridge over US 393 on East side Dr
Open to traffic
Built 1978

Keniston Covered Bridge 29-07-02 [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]
Lost through truss bridge over Merrimack River in Hooksett
Superstructure replaced with new modern truss footbridge reusing original piers
Built 1909; South span destroyed & replaced 1936; Bypassed in 1976; demolished July 2017

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

Main Street Contocook River Bridge (Older) [Map]
Lost Baltimore Through truss bridge over Contocook River on Main Street
Replaced by a new bridge

Main Street Contocook River Bridge (Replacement) [Map · Street View]
Steel stringer bridge on US 3 over Contoocook River
Open to traffic
Built 1984, reconstructed 2014

Main Street Contoocook River Iron Bridge [Map]
Lost Whipple through truss bridge over Contoocook River on Main Street
Replaced by a new bridge

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 Recon 2005

Mary's Bridge [Map]
Lost Town lattice truss covered bridge over Suncook River on Bridge Street
Replaced by a new bridge
Built 1879

Merimack River Hannah Dustin Drive Bridge [Map · Street View]
Two through truss spans over Merrimack River on Hannah Dustin Drive
Removed but not replaced

NEGS - Merrimack River Bridge [Map · Street View]
Warren through truss with all verticals bridge over Merrimack River on New England Southern Railroad
Open to traffic

NEGS - Winnipesaukee River Bridge (E) [Map]
Deck plate girder bridge over Winnipesaukee River on NEGS

NEGS - Winnipesaukee River Bridge (Mid) [Map · Street View]
Deck plate girder bridge over Winnipesaukee River Bridge on NEGSRR
Open to traffic
Built 1931

New England College Covered Bridge 29-07-12 [Map]
Town lattice truss bridge over Contoocook River on Footbridge
Open to pedestrians only
Built 1972

NH 103 Contoocook River Bridge [Map · Street View]
Concrete rigid frame bridge over Contoocook River on NH103, NH127
Open to traffic
Built 1935

Northern Rail Trail - Blackwater River Bridge #1 [Map]
Pony/through plate girder bridge over Blackwater River on Northern Rail Trail
Open to pedestrians only

Northern Rail Trail - Blackwater River Bridge #2 [Map]
Warren through truss with alternating verticals bridge over Blackwater River on Northern Rail Trail - Merrimack County
Open to pedestrians only

Northern Rail Trail - Blackwater River Bridge #3 [Map]
Pony/through plate girder bridge over Blackwater River on Pedestrian Trail
Open to traffic

Northern Rail Trail - Blackwater River Bridge #4 [Map]
Pony/through plate girder bridge over Blackwater River on Trail
Open to traffic

Northern Rail Trail - Chance Pond Branch Bridge [Map · Street View]
Deck arch bridge over Chance Pond Branch on Northern Rail Trail
Open to pedestrians only

Northern Rail Trail - Chance Pond Brook Bridge [Map · Street View]
Stone arch bridge over Chance Pond Brook on Northern Rail Trail
Open to traffic

Northern Rail Trail - Chance Pond Road Overpass [Map · Street View]
Pony plate girder bridge over Chance Pond Road on Northern Rail Trail in Franklin
Open to pedestrians only
Built 1936

Northern Rail Trail - Old South Main Overpass [Map · Street View]
Pony/through plate girder bridge over Old South Main Street/NH-127 on Northern Rail Trail
Open to pedestrians only

Northern Rail Trail - Punch Brook Bridge [Map · Street View]
Deck plate girder bridge over Punch Brook on Northern Rail Trail
Open to pedestrians only

Northern Rail Trail - Roy Ford Road/Frazier Brook Bridge [Map · Street View]
Wooden bridge over Roy Ford Road and Frazier Brook on Northern Rail Trail in Danbury
Open to pedestrians only
Built 1940

Northern Rail Trail - Sucker Brook Bridge [Map · Street View]
Slab bridge over Sucker Brook on BMRR/Northern Rail Trail
Open to traffic
built ca 1847-Roconstructed/Replaced probably several times untill this bridge ca 1930

Northern Rail Trail - US-4 Overpass [Map · Street View]
1937 Pony plate girder over B&MRR/Northern Rail Trail on US-4
Open to traffic
Built 1937 Recon 1986

Northern Rail Trail - Walker Brook Road Overpass [Map · Street View]
1901 Slab bridge over Walker Brook Rd on B&MRR/Northern Rail Trail
Open to traffic

Old Mill Street Bridge [Map · Street View]
2 span Warren pony truss with no verticals bridge over Warner River on Abandoned Road
Closed
Built c. 1910; Bypassed & abandoned 1967

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 by Groton Bridge Co.; rehabilitated 2001

Pierce Bridge [Map]
Stone arch bridge over stream on Footpath
Open to pedestrians only

Pineground Bridge [Map]
Pin connected Lenticular through truss bridge over Suncook River in Chichester
Open to pedestrians only
Built 1887 by the Berlin Iron Bridge Co.; Closed to traffic 1978; Bypassed and rehabilitated for pedestrian use 1981

Pingree Bridge [Map · Street View]
Pin connected Pratt pony truss bridge over Warner River on path
Removed from original location 2010, moved to new location after refurbishment 2013
Built 1893 by Groton Bridge Co.; purchased 2010 by Peter Ladd, refurbished and installed across Warner River September 18, 2013

Ragged Mountain Highway Bridge [Map · Street View]
Pony/through plate girder bridge over Smith River on NH 104
Open to traffic
Built 1940, rehabilitated 1991

Ramsdell Road Bridge [Map · Street View]
Warren through truss bridge over Contoocook River on Ramsdell Road in Henniker
Open to traffic
Built 1937; rehabbed in 2009

Republican Covered Bridge [Map]
Lost Town lattice truss covered bridge over Pemigewasset River on Central Street
Replaced by a new bridge
Built 1802 (another source says 1839)

Rowell's Covered Bridge 29-07-08 [Map · Street View]
Covered bridge over Contoocook River on West Hopkinton Road (Clement Hill Rd) in Hopkinton
Open to traffic
Built 1853; rehabilitated 1996

Rt 114-Lane River Bridge (Replacement) [Map · Street View]
Bridge over Lna River on Rt 114
Open to traffic

Sanborn Bridge [Map · Street View]
1940 Steel stringer bridge over Winnipesaukee River on US-3
Open to traffic
Built 1940

Sewalls Falls Road Bridge [Map · Street View]
Through truss bridge over Merrimack River on Sewalls Falls Road
Demolished and replaced
Built 1915; rehabilitated 1936; Demolished & replaced by UCEB in 2015

Smith River Bridge [Map · Street View]
Concrete arch bridge over Smith River on NH 3A in Bristol
Open to traffic
Built 1940

Smith River Road Bridge [Map · Street View]
1941 Pony/through plate girder bridge over Smith River on Smith River Road (former NH 104)
Open to traffic
Built 1941; reconstructed 2001

Smith River Road Bridge #3 [Map · Street View]
Pony/through plate girder bridge over Smith River on Smith River Road (formerly NH 104)
Open to traffic
Built 1937, reconstructed 2002

Smith River US-4 Bridge [Map · Street View]
1929 Pony/through plate girder bridge over Smith River on US-4
Open to traffic
Built 1929

Soucook River Bridge [Map · Street View]
Concrete tee beam bridge over Soucook River on NH- 9
Open to traffic
Built 1936; rehabilitated 1989

ST - Contoocook River Bridge (N) [Map · Street View]
Pony/through plate girder bridge over Contoocook River on Springfield Terminal Railway
Open to pedestrians only

ST - Contoocook River Bridge (S) [Map · Street View]
Warren through truss with all verticals bridge over Contoocook River on Springfield Terminal Railway
built june 1920

ST - Merrimack River Bridge (Hooksett) [Map · Street View]
Warren through truss with sub-panels bridge over Merrimack River on Pan Am Railways
Open to traffic

Suncook Connector Bridge [Map · Street View]
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

The Crossroads Bridge [Map]
Steel stringer bridge over Merrimack River & Railroad on Interstate 93 (Alan B. Shepard Highway)
Open to traffic
Twin span bridge built 1976; SB bridge rehabiliated 2011; NB bridge rehabilitated 2013

Tilton Island Park Bridge [Map · Street View]
Truesdell pony truss bridge over Winnipesautee River on Pedestrian Trail
Open to pedestrians
Built 1881

Valley Road Bridge [Map]
Wooden bridge over abandoned NHRR on Valley Road in Andover
Open to traffic
Built 1930; rehabilitated 2002

Warner Rail-Trail - Bagley Bridge [Map]
Abandoned through truss bridge over Warner River on B&M Claremont-Concord Branch
Derelict/abandoned

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 Covered Bridge 29-07-04 [Map]
Covered Lattice truss bridge over Warner River on New Market Road in Warner
Open to traffic
Built 1840; rehabilitated 1970

Western Ave Bridge (New) [Map · Street View]
Warren pony truss with all verticals bridge over Contoocook River on Western Avenue
Newly Built
Built 2016 by the US Bridge Co.

Western Avenue Bridge (Older) [Map · Street View]
Through truss bridge over Contoocook River on Western Avenue in Henniker
Replaced by a new bridge
Built 1933; rehabilitated 1988: replaced 2017

Winnipesaukee River Bridge [Map]
Lost Lenticular pony truss bridge over Winnipesaukee River on Central Street
Replaced by a new bridge