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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
COCHECO RIVER New Hampshire Good 1985 11.0 m 2,963
MARTIN BROOK New Hampshire Good 1929 9.6 m 2,956
MARTIN BROOK New Hampshire Poor 1929 8.2 m 2,956
ELBOW BROOK New Hampshire Fair 1934 7.6 m 2,944
MOHAWK RIVER New Hampshire Fair 1934 18.0 m 2,935
BEAVER BROOK New Hampshire Good 1929 9.1 m 2,935
NHRR New Hampshire Fair 1970 24.1 m 2,935
PENNICHUCK RESERVOIR New Hampshire Good 2015 38.7 m 2,930
LITTLE RIVER New Hampshire Good 2015 15.5 m 2,920
NH101 New Hampshire Good 1981 73.2 m 2,919
SMITH RIVER New Hampshire Poor 1940 32.3 m 2,913
BOG POND BROOK New Hampshire Fair 1930 6.1 m 2,913
COCHECO RIVER New Hampshire Good 1986 44.2 m 2,901
SUNCOOK RIVER New Hampshire Good 1997 24.7 m 2,901
SWIFT RIVER New Hampshire Fair 1975 62.5 m 2,900
GRANT BROOK New Hampshire Good 1958 9.1 m 2,894
CLEMENT BROOK New Hampshire Good 1967 20.7 m 2,894
CONNOR BROOK New Hampshire Good 1960 15.5 m 2,894
NH 18 NH116 New Hampshire Fair 1972 19.5 m 2,890
COCHECO R. BACKWATER New Hampshire Good 2012 70.4 m 2,885
COCHECO RIVER New Hampshire Good 2012 44.2 m 2,885
STONY BROOK New Hampshire Fair 1905 17.4 m 2,883
NEWFOUND RIVER New Hampshire Poor 1949 21.9 m 2,878
GUNNISON BROOK New Hampshire Fair 1975 7.6 m 2,873
I-95 New Hampshire Fair 1975 77.7 m 2,868
NECRR New Hampshire Fair 1965 44.2 m 2,864
OSSIPEE RIVER New Hampshire Good 2004 160.0 m 2,854
OUTLET LOON POND New Hampshire Good 1941 6.7 m 2,854
MAD RIVER New Hampshire Poor 1979 164.6 m 2,828
SMARTS BROOK New Hampshire Good 1977 14.3 m 2,828
ANDROSCOGGIN RIVER New Hampshire Fair 1975 92.7 m 2,827
LAMPREY RIVER New Hampshire Fair 1948 13.7 m 2,826
CONTOOCOOK RIVER New Hampshire Fair 1937 26.8 m 2,818
NH101 New Hampshire Fair 1984 70.9 m 2,816
WENDELL BROOK New Hampshire Good 2018 9.8 m 2,811
NORTH RIVER New Hampshire Good 1928 11.3 m 2,809
MOHAWK RIVER New Hampshire Fair 1973 24.1 m 2,807
COLD RIVER New Hampshire Good 2008 32.9 m 2,804
COLD RIVER New Hampshire Fair 1919 18.0 m 2,804
I-95 New Hampshire Fair 1972 77.1 m 2,799
NH114 New Hampshire Fair 1964 36.9 m 2,798
MID BR PISCATAQUOG RIVER New Hampshire Fair 1949 12.2 m 2,789
LOST RIVER New Hampshire Poor 1931 21.0 m 2,784
FORREST BROOK New Hampshire Fair 1955 7.9 m 2,779
BEAR BROOK New Hampshire Fair 1980 6.1 m 2,759
CONE BROOK New Hampshire Fair 1952 13.1 m 2,758
RYE HARBOR New Hampshire Good 1986 29.0 m 2,740
STONY BROOK New Hampshire Good 1929 8.2 m 2,728
INDIAN CREEK New Hampshire Good 1972 9.4 m 2,724
CONNECTICUT RIVER New Hampshire Poor 1866 136.9 m 2,722

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.