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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
MASCOMA RIVER New Hampshire Good 2004 20.4 m 6,887
PISCATAQUOG RIVER New Hampshire Fair 1937 38.4 m 6,880
HARRY BROOK New Hampshire Good 2008 7.0 m 6,880
NH101 New Hampshire Good 1969 27.7 m 6,868
BEAVER BROOK New Hampshire Fair 1940 7.0 m 6,868
MUD POND New Hampshire Fair 1966 7.0 m 6,847
GOLDMINE ROAD New Hampshire Good 1967 14.6 m 6,847
SOUHEGAN RIVER REC PATH New Hampshire Good 1956 43.3 m 6,846
US 3 FEE TPK New Hampshire Good 1994 75.0 m 6,836
ELLIS RIVER New Hampshire Good 1938 42.6 m 6,773
CONTOOCOOK RIVER New Hampshire Fair 1955 82.0 m 6,767
GROTON HOLLOW BROOK New Hampshire Good 1965 21.0 m 6,717
SAGAMORE CREEK New Hampshire Good 2015 129.2 m 6,704
I-93 New Hampshire Good 1976 93.6 m 6,695
NH101 New Hampshire Good 1994 53.6 m 6,676
CHOCORUA RIVER New Hampshire Fair 1937 14.0 m 6,635
BEAVER BROOK New Hampshire Fair 1920 12.8 m 6,622
LAMPREY RIVER New Hampshire Good 1984 8.8 m 6,595
SUGAR RIVER New Hampshire Fair 1996 37.2 m 6,584
NHRR(ABD) New Hampshire Good 1955 9.4 m 6,534
CONNECTICUT RIVER New Hampshire Fair 1900 152.4 m 6,519
SOUHEGAN RIVER New Hampshire Good 1992 47.5 m 6,497
SPICKET RIVER New Hampshire Good 2010 21.9 m 6,479
WHITE BRIDGE BROOK New Hampshire Fair 1941 7.9 m 6,478
MILL BROOK New Hampshire Fair 1941 6.7 m 6,478
MILL BROOK New Hampshire Fair 1928 11.3 m 6,478
MILL BROOK New Hampshire Poor 1941 6.5 m 6,478
MILL BROOK New Hampshire Fair 1948 9.1 m 6,478
US 1 BYPASS New Hampshire Good 2013 41.4 m 6,466
SOUHEGAN RIVER New Hampshire Fair 1917 46.3 m 6,406
OWL BROOK New Hampshire Good 1958 19.5 m 6,361
FEE TPK New Hampshire Poor 1954 50.9 m 6,359
WINNIPESAUKEE RIVER New Hampshire Good 1972 56.1 m 6,347
BK BAY LA WINNIPESAUKEE New Hampshire Fair 1942 13.7 m 6,310
BEAVER BROOK New Hampshire Good 1966 16.5 m 6,245
PEMIGEWASSET RIVER New Hampshire Poor 1933 26.8 m 6,210
MINK BROOK New Hampshire Good 2006 14.6 m 6,198
HOWE RESERVOIR New Hampshire Good 1980 7.0 m 6,178
LITTLE RIVER New Hampshire Fair 1930 8.2 m 6,155
NEWFOUND RIVER New Hampshire Good 1996 21.3 m 6,148
SALMON FALLS RIVER New Hampshire Poor 1950 149.0 m 6,132
I-93 New Hampshire Good 1975 80.8 m 6,128
CONTOOCOOK RIVER New Hampshire Good 1940 26.2 m 6,119
OLD NH 9 GRANITE LK OUT New Hampshire Fair 1994 88.2 m 6,118
BOYS CAMP ROAD New Hampshire Good 1994 14.0 m 6,118
BEAVER BROOK New Hampshire Poor 1900 14.0 m 6,111
INDIAN RIVER New Hampshire Fair 1930 14.6 m 6,096
INDIAN RIVER New Hampshire Fair 1978 29.0 m 6,096
NH101 New Hampshire Good 1981 79.2 m 6,073
COLD RIVER New Hampshire Fair 1960 69.6 m 6,073

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.