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Browse Bridge Database

2,549 bridges in the FHWA National Bridge Inventory in New Hampshire.

National Bridge Inventory Database

Browse 2,549 bridges from the Federal Highway Administration National Bridge Inventory. Filter by state, condition rating, or search by name and location.

Clear
BridgeLocationConditionYear BuiltLengthADT
ASHUELOT RIVER New Hampshire Fair 1921 38.4 m 2,195
I-89 NH 10 New Hampshire Fair 1961 56.7 m 2,191
NHRR(ABD) New Hampshire Poor 1930 22.6 m 2,191
ASHUELOT RIVER New Hampshire Fair 1832 46.3 m 2,191
COCHECO RIVER New Hampshire Good 1978 54.6 m 2,189
SMITH RIVER New Hampshire Fair 1940 19.5 m 2,181
NHRR(ABD) New Hampshire Fair 1959 39.7 m 2,172
BLACKWATER RIVER New Hampshire Fair 1933 19.2 m 2,172
BOW BOG BROOK New Hampshire Good 2006 6.7 m 2,172
MINK BROOK New Hampshire Fair 1901 8.2 m 2,168
CONNECTICUT RIVER New Hampshire Poor 1937 143.6 m 2,160
CHOCORUA RIVER New Hampshire Fair 1925 6.7 m 2,159
MELVIN RIVER New Hampshire Fair 1921 9.1 m 2,151
BAKER RIVER New Hampshire Fair 2006 49.6 m 2,141
CONNECTICUT RIVER New Hampshire Fair 1970 150.3 m 2,136
LITTLE SUNCOOK RIVER New Hampshire Fair 1924 12.5 m 2,133
CONNECTICUT RIVER New Hampshire Good 1990 73.2 m 2,132
BAKER RIVER New Hampshire Good 2001 51.8 m 2,132
CONTOOCOOK RIVER New Hampshire Good 2013 29.3 m 2,130
MILL BROOK New Hampshire Good 1937 20.1 m 2,087
SMITH RIVER New Hampshire Poor 1929 21.3 m 2,087
AMMONOOSUC RIVER New Hampshire Poor 1960 67.7 m 2,087
ISINGLASS RIVER New Hampshire Fair 1955 20.1 m 2,078
DRAKES BROOK New Hampshire Good 1967 8.8 m 2,074
HIGH BROOK New Hampshire Good 1967 7.0 m 2,074
AMMONOOSUC RIVER New Hampshire Good 2011 46.5 m 2,061
CSX ROAD New Hampshire Fair 1937 37.5 m 2,056
BLOW-ME-DOWN BROOK New Hampshire Fair 1933 10.7 m 2,052
SALMON FALLS RIVER New Hampshire Fair 1962 47.5 m 2,049
PISCATAQUOG RIVER New Hampshire Good 1993 36.0 m 2,048
CSX New Hampshire Fair 1920 10.4 m 2,029
MAD RIVER New Hampshire Fair 1927 26.2 m 2,020
WINTER BROOK New Hampshire Fair 1974 7.9 m 2,020
SALMON BROOK New Hampshire Good 1999 11.6 m 2,003
BROAD ST PKWY CSX New Hampshire Good 2014 61.3 m 2,000
AMEY BROOK New Hampshire Good 1938 25.6 m 1,984
NHRR New Hampshire Fair 1978 67.7 m 1,978
NANCY BROOK New Hampshire Good 1978 12.5 m 1,978
SAWYER RIVER New Hampshire Good 2013 43.1 m 1,978
STONY BROOK New Hampshire Good 1939 7.9 m 1,978
LITTLE COHAS BROOK New Hampshire Poor 1974 7.3 m 1,964
MASCOMA RIVER New Hampshire Good 2003 25.9 m 1,959
WILLEY BROOK New Hampshire Fair 1978 7.6 m 1,957
SACO RIVER New Hampshire Fair 1978 21.0 m 1,957
MILL BROOK New Hampshire Fair 1963 20.7 m 1,942
PARSONS CREEK New Hampshire Good 1986 13.4 m 1,938
ASHUELOT RIVER New Hampshire Fair 1940 42.7 m 1,937
JOE ENGLISH BROOK New Hampshire Good 1989 13.7 m 1,933
SOUHEGAN RIVER New Hampshire Good 1971 24.1 m 1,924
BEECH RIVER New Hampshire Good 1932 15.5 m 1,917

Frequently Asked Questions

The National Bridge Inventory (NBI) is a federal database maintained by the Federal Highway Administration containing inspection data for all bridges on public roads in the U.S. with a span of more than 20 feet. Bridge owners must inspect each structure at least every 24 months.

ADT stands for Average Daily Traffic — the average number of vehicles crossing the bridge per day. Bridges are sorted by ADT by default because high-traffic bridges in poor condition pose the greatest risk to the most people.

Yes. Use the search field above to find bridges by name, location, or features crossed. You can also combine the search with state and condition filters to narrow your results.