Merrimack County

NameLocationStatusDesignYear BuiltYear LostSpan Length (ft.)Total Length (ft.)
B&M - Franklin Covered BridgeBoston & Maine Railroad over Merrimack RiverCollapsedUnknown18901945--297.0
B&M - Keystone Lane ArchB&M Suncook Loop over Keystone LnDerelict/abandonedStone arch--------
B&M - Penacook Lower Covered BridgeBoston & Maine Railroad over Contoocook RiverReplaced by a new bridgeChilds through truss18671919----
B&M - Penacook Upper Covered BridgeBoston & Maine Railroad over Contoocook RiverReplaced by a new bridgeTown lattice truss18751921112.0112.0
B&M - Suncook River Town Deck TrussBoston & Maine Railroad over Suncook RiverCollapsedLattice deck truss--1970--103.0
B&M/C&M - Turkey Falls BridgeB&MRR over Merrimack RiverRemoved but not replacedThrough truss1912ca.1950----
B&M/C&M - Turkey Falls Covered BridgeBoston & Maine Railroad & Concord & Manchester Electric Railway over Merrimack RiverReplaced by a new bridgeThrough truss19031912----
Barnstead Road BridgeBarnstead Road (NH-107) over Suncook RiverOpen to trafficConcrete rigid frame1934199765.0113.9
Bement Covered Bridge 29-07-03Bradford Center Road over West Branch Warner RiverOpen to trafficLong through truss1854--52.261.0
BM - Suncook Loop Covered Bridge (E)Boston & Maine Railroad over Merrimack RiverDestroyed by floodingThrough truss18891936----
BM - Suncook Loop Covered Bridge (W)Boston & Maine Railroad over Merrimack RiverDestroyed by floodingThrough truss18891936----
BM - Winnipesaukee River BridgeBoston & Maine Railroad over Winnipesaukee River and Winnipesakeee River TrailDerelict/abandonedTimber stringer--------
Borough Road BridgeBorough Road over Smith RiverReplaced by a new bridgeClosed-spandrel arch1930--38.138.1
Boscawen-Canterbury BridgeDepot Road over Merrimack RiverRemoved but not replacedParker through truss19072014170.0347.1
Chance Pond Brook Pedestrian BridgePedestrian Path over Chance Pond BrookOpen to pedestrians onlyTown lattice truss----26.026.0
Cilleyville Covered Bridge 29-07-01Bypassed Historic over Pleasant BrookClosed to all trafficTown lattice truss1887--53.253.2
Contoocook Covered Bridge 29-07-63xMain Street/Park Avenue/Route 103 over Contoocook RiverRemoved as part of a WPA make-work projectLong through truss18531935--167.0
Dalton Covered Bridge 29-07-05Joppa Road West over Warner RiverOpen to trafficLong through truss1853--71.976.1
Edna Dean Proctor BridgeNH 114 over Contoocook RiverOpen to trafficDeck arch1939--54.5118.1
Franklin Falls Dam BridgePedestrian path over DamOpen to pedestrians onlyPratt deck truss1943--141.0188.0
Franklin Falls Hydro Electric Plant #2 BridgePedestrian over Winnipesaukee RiverOther through truss------64.0
Franklin Highway Sucker Brook BridgeFranklin Hwy/NH11 over Sucker BrookOpen to trafficConcrete culvert1929--27.928.9
Henniker Road Covered Bridge 29-07-62xOld Route 9 & 202 over Contoocook RiverReplacedLattice through truss18621936--180.0
High Street BridgeHigh Street over Smith RiverClosed to all trafficWarren pony truss with alternating verticals1913--41.045.9
Hopkinton Covered Railroad Bridgeformer Boston & Maine Railroad over Contoocook RiverOpen to pedestriansTown lattice truss1889--67.0140.1
I-393 East Side Drive BridgeEast side Dr over I-393Open to trafficSteel rigid frame1978--160.1295.0
Keniston Covered Bridge 29-07-02Bridge Road over Blackwater RiverOpen to trafficTown lattice truss1882--52.265.0
Last Street BridgeLast Street over Sucker BrookOpen to trafficTimber stringer1936--24.025.9
Lilac BridgeMain Street over Merrimack RiverRemoved but not replacedPratt through truss19092017170.0490.2
Lower Ridge Road BridgeLower Ridge Road over Academy BrookOpen to trafficDeck arch1931--44.944.9
Main Street BridgeMain Street over Suncook RiverOpen to trafficStone arch1942--40.073.2
Main Street BridgeMain Street over Lake Todd OutletOpen to trafficStone arch1929--17.153.2
Main Street Contocook River Bridge (Older)Main Street over Contocook RiverReplaced by a new bridgeBaltimore through truss--------
Main Street Contocook River Bridge (Replacement)US 3,VILLAGE ST over CONTOOCOOK RIVEROpen to trafficSteel stringer1984--95.1194.6
Manchester Street BridgeManchester Street over Merrimack RiverReplaced by new bridgePratt through truss19331998244.1590.9
Maple Street BridgeMaple Street over B&MRR/Northern Rail TrailOpen to trafficTimber stringer1930--62.062.0
Marston Hill Road Boston & Maine Railroad Bridge 94.92BMRR/Northern Rail Trail over Marston Hill RdOpen to trafficDeck plate girder------52.0
Merimack River Hannah Dustin Drive BridgeHannah Dustin Dr over Merrimack RiverRemoved but not replacedThrough trusspre19251959173.0500.0
NEGS - Merrimack River BridgeNew England Southern Railroad over Merrimack RiverOpen to trafficWarren through truss with all verticals--------
NEGS - Winnipesaukee River Bridge (E)NEGS over Winnipesaukee RiverDeck plate girder----42.0183.0
NEGS - Winnipesaukee River Bridge (Mid)NEGSRR over Winnipesaukee River BridgeOpen to trafficDeck plate girder1931----142.0
New England College Covered Bridge 29-07-12Footbridge over Contoocook RiverOpen to pedestrians onlyTown lattice truss1972----137.0
Northern Rail Trail - Blackwater River Bridge #1Northern Rail Trail over Blackwater RiverOpen to pedestrians onlyPony/through plate girder--------
Northern Rail Trail - Blackwater River Bridge #2Northern Rail Trail - Merrimack County over Blackwater RiverOpen to pedestrians onlyWarren through truss with alternating verticals--------
Northern Rail Trail - Blackwater River Bridge #3Northern Rail Trail over Blackwater RiverOpen to trafficPony/through plate girder----102.0102.0
Northern Rail Trail - Blackwater River Bridge #4Northern Rail Trail over Blackwater RiverOpen to trafficPony/through plate girder1927--94.094.0
Northern Rail Trail - Chance Pond Branch BridgeNorthern Rail Trail over Chance Pond BranchOpen to pedestrians onlyDeck arch--------
Northern Rail Trail - Chance Pond Brook BridgeNorthern Rail Trail over Chance Pond BrookOpen to trafficStone arch--------
Northern Rail Trail - Chance Pond Road OverpassNorthern Rail Trail over Chance Pond RoadOpen to pedestrians onlyPony/through plate girder1936--20.020.0
Northern Rail Trail - Old South Main OverpassNorthern Rail Trail over Old South Main Street/NH-127Open to pedestrians onlyPony/through plate girder--------
Northern Rail Trail - Punch Brook BridgeNorthern Rail Trail over Punch BrookOpen to pedestrians onlyDeck plate girder--------
Northern Rail Trail - Roy Ford Road/Frazier Brook BridgeNorthern Rail Trail over Roy Ford Road and Frazier BrookOpen to pedestrians onlyTimber stringer1940--18.050.9
Northern Rail Trail - Sucker Brook BridgeBMRR/Northern Rail Trail over Sucker BrookOpen to trafficSlabca1930----21.0
Northern Rail Trail - US-4 OverpassUS-4 over B&MRR/Northern Rail TrailOpen to trafficPony/through plate girder1937--94.2104.0
Northern Rail Trail - Walker Brook Road OverpassB&MRR/Northern Rail Trail over Walker Brook RdOpen to trafficSlab1901--17.120.0
Old Mill Street BridgeAbandoned alignment of Village Road over Warner RiverClosedWarren pony truss with no verticals----35.075.0
Old Town Line Road BridgeOld Town Line Road over Colby BrookOpen to trafficDeck arch1914--9.818.0
Patterson Hill Road BridgePatterson Hill Road over Contoocook RiverOpen to trafficPratt through truss1915--112.9119.1
Pineground Bridgeformer Old Depot Road over Suncook RiverOpen to pedestrians onlyLenticular through truss1887--96.196.1
Pingree BridgeMountain Road over Blackwater RiverRemoved from original location 2010, moved to new location after refurbishment 2013Pratt pony truss1893--75.177.1
Ragged Mountain Highway BridgeNH 104 over Smith RiverOpen to trafficPony/through plate girder1940--96.1106.0
Ramsdell Road BridgeRamsdell Road over Contoocook RiverOpen to trafficThrough truss1937--107.9110.9
Rowell's Covered Bridge 29-07-08West Hopkinton Road (Clement Hill Rd) over Contoocook RiverOpen to trafficLong through truss1853--155.8169.0
Sanborn BridgeUS-3 over Winnipesaukee RiverOpen to trafficSteel stringer1940--64.068.9
Sewalls Falls Road BridgeSewalls Falls Road over Merrimack RiverDemolished and replacedPratt through truss19152015-16167.0660.1
Smith River B&M Railroad Bridge 113.84B&MRR/Northern Rail Trail over Smith RiverOpen to trafficPony/through plate girder1914----78.0
Smith River BridgeNH 3A over Smith RiverOpen to trafficClosed-spandrel arch1940--64.064.0
Smith River Road BridgeSmith River Road (formerly NH 104) over Smith RiverOpen to trafficPony/through plate girder1941--100.1106.0
Smith River Road Bridge #3Smith River Road (formerly NH 104) over Smith RiverOpen to trafficPony/through plate girder1937--96.1107.9
Smith River US-4 BridgeUS-4 over Smith RiverOpen to trafficPony/through plate girder1929--63.069.9
Soucook River BridgeNH- 9 over Soucook RiverOpen to trafficConcrete tee beam1936--69.9178.2
ST - Contoocook River Bridge (N)Springfield Terminal Railway over Contoocook RiverOpen to pedestrians onlyPony/through plate girder1920----108.0
ST - Contoocook River Bridge (S)Springfield Terminal Railway over Contoocook RiverWarren through truss with all verticals1920--154.0154.0
ST - Merrimack River Bridge (Hooksett)Pan Am Railways over Merrimack RiverOpen to trafficBaltimore through truss--------
Sulphite Railroad Covered Bridge 29-07-09Former Boston & Maine Railroad (Franklin & Tilton Railroad) over Winnipesautee RiverClosed to all trafficPratt deck truss1896--65.0225.0
Suncook Connector BridgeUS 3 over Suncook River and Buck StreetOpen to trafficWarren deck truss2007--164.1439.0
Suncook River BridgeUS 3 over Suncook RiverReplaced by similar double-decker truss bridgeWarren deck truss19312007148.0394.0
Tilton Island Park BridgePedestrian Trail over Winnipesautee RiverOpen to pedestriansTruesdell pony truss1881----100.0
Valley Road BridgeValley Road over Abandoned NHRROpen to trafficTimber stringer1930--19.089.9
Warner Rail-Trail - Bagley BridgeB&M RR Claremont Branch over Warner RiverDerelict/abandonedWarren through truss with all verticals1929----96.6
Water Street BridgeUS Hwy. 3/Water Street over BMRRReplaced by new bridgeGirder19362000122.1126.0
Waterloo Covered Bridge 29-07-04New Market Road over Warner RiverOpen to trafficTown lattice truss1840--75.176.1
Western Avenue BridgeWestern Avenue over Contoocook RiverReplaced by a new bridgePratt through truss19332017149.0305.1
Winnipesaukee River BridgeCentral Street over Winnipesaukee RiverReplaced by a new bridgeLenticular pony truss--------