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Every bridge in Merrimack County, New Hampshire

326 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

BridgeBuiltVehicles/dayCondition
I-93 Fee Tpk Ramp over Hackett Hill Road197886,013Fair
I-93 Fee Tpk over Cross Road195682,029Fair
I-93 Fee Tpk over Ramp A-b195779,640Fair
I-93 Fee Tpk over Dow Road195778,501Fair
I-93 Fee Tpk over Robinson Road195778,501Fair
I-93 Fee Tpk over US 3 Manchester Street200075,054Good
I-93 Fee Tpk over Nh 9 Loudon Road196672,557Fair
I-89 over South Street195946,612Poor
US202 over CSX194945,555Fair
US202 over Nhrr Constitution Av.195845,555Poor
I-93 Fee Tpk NB over CSX195743,056Fair
I-393 US 4 US202 over Fort Eddy Rd198040,527Poor
I-393 US 4 US202 over Merrimack River197840,527Fair
I-93 Fee Tpk SB over CSX195738,086Fair
I-93 Fee Tpk NB over Hall Street195837,766Fair
I-93 Fee Tpk SB over Hall Street195837,288Fair
I-93 Fee Tpk SB over I-89 Turkey River Ped201435,573Good
I-93 Fee Tpk NB over I-89 Turkey River201434,805Good
I-93 NB over US 3 Nh 28197634,221Good
I-93 SB over US 3 Nh 28197634,000Good
I-93 over Williams Brook196030,961Fair
I-89(RAMP A) over Turkey River195930,513Fair
I-93 SB over Nh 3A197629,141Good
US 3 over Merrimack River199826,707Fair
I-93 US 4 NB over Merrimack River195925,855Fair
I-93 US 4 SB over Merrimack River195925,801Fair
I-93 NB over Nh 3A197625,712Fair
Nh 9(LOUDON Road) over Merrimack River196623,721Poor
I-93 US 4 SB over Sewalls Falls Road195923,705Good
I-93 US 4 NB over Sewalls Falls Road195923,491Good
I-93 NB C-d Road over I-89 Turkey River Ped197822,560Good
I-89 SB over Nh 13195922,511Good
I-393 US 4 US202 over I-93195822,391Poor
I-93 SB over I-293 Fee Tpk197721,233Good
I-89 SB over Turkey Pond195920,703Poor
US 3 Water St over CSX200020,544Good
I-89 SB over Silk Farm Road195920,412Good
I-89 NB over Turkey Pond195920,387Poor
I-89 SB over Stickney Hill Road195920,345Fair
I-89 NB over Nh 13195920,036Good
I-89 NB over Silk Farm Road195920,036Good
I-89 NB over Stickney Hill Road195920,003Fair
Nh 9(LOUDON Rd) over Storrs Street CSX197019,639Good
I-93 NB over West Road196019,156Good
I-89 SB over I-89 Ramp195918,981Good
I-93 SB over West Road196018,806Good
I-89 NB over I-89 Ramp195918,311Good
I-93 NB over NH132195918,247Good
I-93 SB over NH132195917,906Fair
US202 Nh 9 over Contoocook River196117,117Fair
US202 Nh 9 over Elm Brook196117,117Fair
US202 Nh 9 over Hatfield Road196117,117Fair
US 4 US202 Nh 9 over Suncook River197117,061Good
US 4 US202 Nh 9 over Suncook River Overflow199617,061Good
I-393 US 4 US202W over Portsmouth Street197816,864Good
US 3 Nh 28 over Heads Pond198116,478Fair
I-393 US 4 US202E over Portsmouth Street197816,231Good
US202 Nh 9 over Amey Brook196215,806Fair
US202 Nh 9 over Rush Road196215,806Good
Main Street over Merrimack River CSX Rd197615,760Good
I-93 NB over Bay Street196015,544Good
I-93 NB over NH132195915,544Good
I-93 NB over Nhrr Winnipesaukee River196015,544Good
I-93 SB over Bay Street196015,417Good
I-93 SB over NH132195915,417Good
I-93 SB over Nhrr Winnipesaukee River196015,417Good
US 4 over Merrimack River200515,071Good
US 4 over River Road Bmrr(abd)195815,071Fair
NH106 over Soucook River197714,723Good
US202 Nh 9 over Liberty Hill Road197414,456Good
NH106 over I-393 US 4 US202198814,339Good
US 3 Nh 11 over Winnipesaukee River194014,205Fair
Nh 3A over I-93 Fee Tpk201513,754Good
I-89 NB over NH103196813,642Fair
I-89 SB over Warner River196613,402Fair
NH106 over Shaker Brook195113,249Fair
US 3 over Soucook River195313,115Good
US 3 Nh 11 over Winnipesaukee River192212,980Fair
I-89 SB over US202 Nh 9195912,978Fair
US 3 Nh 11 NH127 over Pemigewasset River199412,379Good
I-89 SB over US202 Nh 9 WB195912,219Fair
I-89(SB Ramp) over US202 Nh 9 EB195912,133Fair
NH106 over Soucook River197712,131Good
I-89 NB over US202 Nh 9195912,106Fair
US 4 Wb(hoit Rd) over I-93 US 4 WB195811,598Fair
US 4 over Nhrr195811,598Fair
I-89 NB over Contoocook River196711,594Good
I-89 NB over Pine Street196711,594Good
I-89 SB over Contoocook River195911,574Fair
I-89 SB over Pine Street195911,574Fair
I-89 SB over Warner River196611,491Fair
I-89 NB over North Village Road196610,883Good
I-89 NB over Warner River196610,883Fair
I-89 NB over Warner River196610,883Fair
I-89 NB over West Joppa Road196610,883Good
I-89 SB over NH103196810,849Fair
I-89 SB over North Village Road196610,849Fair
I-89 SB over West Joppa Road196610,849Good
I-89 SB over NH103196610,586Good
I-89 SB over Warner River196610,586Fair
I-89 NB over NH103196610,232Good
I-89 NB over Warner River196610,232Fair
Nh 13 over Turkey River196010,111Fair
I-89 SB over Bog Road19679,810Fair
I-89 SB over Columbus Avenue19679,810Good
I-89 SB over Nh 1119679,810Fair
I-89 NB over Bog Road19679,751Fair
I-89 NB over Columbus Avenue19679,751Fair
I-89 NB over County Road19679,751Good
I-89 NB over Nh 1119679,751Fair
NH106 over Soucook River19969,638Good
NH106 over Soucook River19529,549Fair
I-89 NB over Gile Pond Road19679,459Good
I-89 NB over Stevens Brook Road19679,459Fair
I-89 SB over Gile Pond Road19679,452Fair
I-89 SB over Stevens Brook Road19679,452Fair
I-89 SB over Otterville Road19679,402Fair
I-89 NB over King Hill Road19679,399Fair
I-89 NB over NH11419679,399Fair
I-89 NB over North Hominy Pot Rd19679,399Fair
I-89 SB over King Hill Road19679,388Fair
I-89 SB over NH11419679,388Fair
I-89 SB over North Hominy Pot Rd19679,388Fair
NH132(EASTSIDE Dr) over I-393 US 4 US20219789,347Fair
US 3 over Suncook River Buck St20079,285Good
I-89 NB over Otterville Road19679,237Fair
NH140 over Tioga River19689,196Good
I-89(RAMP D) over Turkey River19878,925Good
I-393 US 4 US202E over Soucook River19888,857Good
I-393 US 4 US202E over Horse Corner Road19888,592Good
Nh 9 over I-393 US 4 US20219888,465Good
Nh 9 over Soucook River19368,465Fair
I-393 US 4 US202W over Horse Corner Road19888,164Good
I-393 US 4 US202W over Nh 919888,164Good
I-393 US 4 US202W over Soucook River19888,164Good
Nh 28 over Suncook River19587,989Good
Nh 13 over West Branch Bela Brook19407,414Good
NH103 over Stevens Brook19667,253Good
NH103 NH127 over Contoocook River19356,971Fair
I-93 SB US 4 Ramp over Nhrr19586,898Fair
Tremont Street over Contoocook River19556,767Fair
US 3 over Nhrr(abd)19556,534Good
Nh 11 over Blackwater River19595,615Good
Nh 11 over Nhrr(abd)20105,615Good
NH114 over US202 Nh 919745,492Fair
US 4 Nh 11 over Ragged Mountain Brook19595,149Good
Nh 11 over Cascade Brook19605,115Fair
Nh 11 over Pleasant Stream19595,115Fair
NH103 over Andrew Brook19625,102Fair
NH132 over Winnipesaukee River19604,904Good
NH132 over Williams Brook19604,841Good
NH103 over Andrew Brook19374,837Fair
US 3 Village St over Contoocook River19844,813Good
NH114 over Contoocook River19394,746Fair
NH103 over Lake Todd Outlet19674,633Fair
West Portsmouth St over I-93 US 420004,541Fair
Main Street over Suncook River19424,409Fair
North Pembroke Rd over Soucook River19594,050Good
NH114 over Warner River19484,002Fair
NH114 over Amey Brook19513,928Good
I-89(RAMP F) over Turkey River19593,904Fair
NH127 over I-8919943,866Fair
NH103 over Warner River19363,778Fair
NH103 over Warner River19363,778Fair
Sewalls Falls Road over Merrimack River20163,708Good
I-93 SB on Ramp over Nhrr Constitution Av.19493,658Fair
Main Street over Suncook River20053,640Good
NH127 over Spillway Channel19613,434Fair
NH127 over Tail Race19003,434Fair
NH107 over Griffin Brook20103,391Good
South Village Road over Soucook River19263,138Fair
Nh 11 over Elbow Brook19342,944Fair
NH104 over Bog Pond Brook19302,913Fair
NH104 over Smith River19402,913Poor
NH107 over Suncook River19972,901Good
Deerfield Road over Bear Brook19802,759Fair
Nh 11 over Nhrr(abd)19292,674Poor
Nh 11 over Sucker Brook19292,674Poor
Nh 11 over Sucker Brook19292,674Poor
Nh 3A over Needle Shop Brook19402,664Fair
US 4 over Blackwater River19332,652Poor
Donati Drive over I-9319762,620Fair
Horse Hill Road over Contoocook River19812,615Fair
US202 Nh 9 over Ash Brook19702,610Poor
Cross Mill Road over Winnipesaukee River19882,602Good
Washington Street over Canal Inlet19752,533Fair
Washington Street over Mill Outlet19882,533Good
US 4 over Nhrr(abd)20232,503Good
US 4 over Nhrr(abd)19372,503Fair
Sargent Road over Williams Brook19852,425Good
Pine Street over I-93 Fee Tpk19782,263Fair
Dunklee Road over Bow Bog Brook20062,172Good
US 4 over Blackwater River19332,172Fair
US 4 over Nhrr(abd)19592,172Fair
Black Hall Road over Little Suncook River19242,133Fair
US 4 over Smith River19292,087Poor
Concord Road over Amey Brook19381,984Good
Jewett Road over I-8919591,716Fair
Chichester Road over Bee Hole Brook20061,714Good
East Penacook Road over Blackwater River19671,664Fair
NH127 over Warner River19371,581Poor
Short Falls Road over Suncook River19501,540Good
NH127 over Blackwater River19411,472Poor
Clough Hill Road over Soucook River19601,373Fair
NH103 over I-89 NB19661,372Fair
NH103 over I-89 SB Warner River19661,372Poor
Penacook Road over Contoocook River19801,246Fair
Kearsarge Val Rd over Cascade Brook20081,167Good
Shaker Road over Brook20191,167Good
West Road over Hoyt Brook20101,167Good
Grandview Road over I-93 Fee Tpk19781,142Fair
Webster Mills Road over Suncook River19811,060Fair
NH132 over I-9319591,052Good
Rush Road over Amey Brook1935951Fair
Main Street over Kings Brook2007887Good
Center Hill Road over Blakes Brook2008852Good
North Village Road over Warner River1967799Fair
I-93 Ramp over Fee Tpk1976761Fair
Hooksett Turnpike over Bela Brook2021727Good
Delta Drive over I-93 US 41958612Poor
Forest Road over Williams Brook1960582Good
Brookview Drive over Beaver Brook2017571Good
Deer Meadow Road over Deer Meadow Brook1935569Fair
River Road over CSX1989567Good
Birchdale Road over Bela Brook2021565Good
Birchdale Road over White Brook2018565Good
W Hopkinton Road over Contoocook River1853558Fair
Western Ave over Contoocook River2017551Good
Nh 4A over Kimpton Brook1955545Good
Lower Ridge Road over Academy Brook1931533Fair
Ramsdell Road over Contoocook River1937531Fair
Webster Mills Road over Sanborn Brook2006530Good
North Road over Smith River1936511Fair
Staniels Road over Soucook River2001510Good
Lawrence Road over Blackwater River1930501Fair
Access Road over I-93 NB Off Ramp1978500Good
Kellys Corner Road over Sanborn Brook1991477Fair
Village Road over Andrew Brook2011458Good
Clothespin Br Road over Blackwater River1954457Poor
Sutton Road over Ring Brook2011455Good
Depot Street over Suncook River1981453Good
Jones Road over Hoyt Brook2008439Good
Breezy Hill Road over Pond Brook1950435Fair
New Market Road over Warner River1840428Fair
Fairgrounds Road over West Branch Brook2001386Fair
North Wilmot Road over Kimpton Brook1968378Fair
Camp Ground Road over Pleasant Stream2004375Good
Wales Bridge Road over Soucook River1934372Poor
Lake Shore Drive over Sucker Brook1942370Fair
Wadleigh Hill Road over Kezar Lake Outlet1940364Fair
Water Street over West Branch Brook1980349Fair
Mountain Road over Andrew Brook1936330Fair
Bible Hill Lane over Warner River1979329Fair
Village Road over Cascade Brook1935329Good
Roby Road over Lane River2002326Good
Podunk Road over Bear Brook1950303Fair
Old Shaker Road over Shaker Brook1920300Good
Smith River Road over Smith River1941276Good
Tyler Road over Blackwater River1951275Fair
Loudon Ridge Road over Academy Brook2023260Good
Maple Street over Nhrr(abd)1930243Good
Cilleyville Road over Blackwater River1934173Fair
Patterson Hill Rd over Contoocook River1915147Fair
Shindagen Road over Brook1940146Good
Eastern Dist Road over Smith River1949142Fair
Bunker Hill Road over Needle Shop Brook1960112Good
Joppa Road West over Warner River1853100Fair
Island Road over Canal Inlet198898Good
Borough Road over Smith River201096Good
Bradford Center Rd over W Br Warner River185496Good
Bradley Lake Road over Bradley Brook196096Good
Breezy Hill Road over Warner River201696Good
Bridge Road over Blackwater River188296Poor
Bridge Street over Suncook River190996Good
Brookside Drive over Lion Brook202096Good
Cass Mill Road over Smith River200096Good
Center Hill Road over Little Suncook River197896Fair
Connors Mill Road over Schoodac Brook200996Good
Cotton Road over Baker Brook194596Fair
County Road over I-89 SB196796Good
Currier Road over Soucook River193096Fair
Eagle Pond Road over Eagle Pond Outlet197496Good
Echo Valley Farm R over Griffin Brook201796Good
Fairgrounds Road over West Branch Brook200396Good
Felch Road over Lion Brook198396Fair
Forbes Mtn Road over Wild Meadow Brook195096Fair
Ford Mill Road over Smith River198896Fair
Goose Hole Road over Brook193096Good
Gould Hill Road over Bog Pond Outlet195096Fair
Griffin Road over Griffin Brook200896Good
Hobbs Hill Road over Brook199096Good
Johnson Hill Road over West Branch Brook195096Poor
Laing Road over Warner River198096Fair
Last Street over Sucker Brook193696Poor
Lower Ridge Road over Academy Brook202396Good
Mansion Road over Stark Brook201896Good
Mountain Road over Blackwater River201096Good
North Road over Meadow Brook193996Fair
North Village Road over Silver Brook201196Good
Old Hillsboro Road over US202 Nh 9197496Fair
Patterson Road over Kimpton Brook199496Fair
Piper Pond Rd over Brook198396Fair
Randall Road over Bryant Brook193096Good
South Road over I-89195996Fair
Stewart Road over Brook196096Good
Tannery Lane over Tannery Pond Outlet191096Fair
Twin Bridge Road over Whichier Brook199896Good
Tyler Road over Blackwater River193796Good
Valley Road over Rec Trail(rr Bed)193096Fair
W. Salisbury Road over Blackwater River199096Good
Wadleigh Hill Road over Lane River198596Fair
Walker Brook Road over Frazier Brook195096Fair
Warner Road over Blackwater River199396Good
West Meadow Road over Hoyt Brook200996Good
Western Ave over Canal192996Fair
Wild Meadow Road over Wild Meadow Brook195096Fair
Woodland Lane over Whitney Brook198896Good
Zaccaria Road over Smith River195096Poor
Morrill Hill Road over Elbow Brook201894Good
Chemical Road over Warner River196686Fair
Frazier Road over Frazier Brook198784Good
Dyers Crossing Rd over Sucker Brook200580Good
Walker Brook Road over Frazier Brook195075Poor
Jack Wells Road over Frazier Brook195073Poor
Shop Road over Needle Shop Brook193064Poor
Old Route 3A over Needle Shop Brook19101Fair

Source: FHWA National Bridge Inventory, 2025.

Merrimack County bridge conditions · New Hampshire bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.