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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
NB RAMP New Hampshire Good 1971 44.0 m 12,881
MASCOMA RIVER New Hampshire Fair 1977 34.7 m 12,844
COCHECO RIVER New Hampshire Fair 1975 63.4 m 12,810
MASCOMA RIVER New Hampshire Poor 1977 27.1 m 12,803
SOUHEGAN RIVER New Hampshire Poor 1931 34.1 m 12,799
SUGAR RIVER New Hampshire Good 1985 32.9 m 12,792
PISCATAQUOG RIVER New Hampshire Good 1894 25.0 m 12,740
BEAVER BROOK New Hampshire Good 1996 9.1 m 12,708
CONNECTICUT RIVER New Hampshire Fair 1998 141.8 m 12,683
FEE TPK New Hampshire Good 2013 62.5 m 12,556
VALLEY BROOK New Hampshire Good 2013 7.6 m 12,496
SOUHEGAN RIVER New Hampshire Fair 1954 21.6 m 12,472
STONY BROOK New Hampshire Fair 1966 10.4 m 12,439
PEMIGEWASSET RIVER New Hampshire Good 1994 123.7 m 12,379
US202 NH 9 WB New Hampshire Fair 1959 24.4 m 12,219
SACO RIVER New Hampshire Fair 1945 124.4 m 12,188
US202 NH 9 EB New Hampshire Fair 1959 19.8 m 12,133
SOUCOOK RIVER New Hampshire Good 1977 55.5 m 12,131
SMITH POND ROAD New Hampshire Fair 1959 20.9 m 12,130
MAD RIVER New Hampshire Fair 1955 11.6 m 12,121
COCHECO RIVER New Hampshire Fair 1977 30.8 m 12,115
US202 NH 9 New Hampshire Fair 1959 15.8 m 12,106
NASHUA RIVER New Hampshire Fair 1950 76.8 m 12,103
CONTOOCOOK RIVER New Hampshire Fair 1938 11.6 m 12,068
EXETER RIVER New Hampshire Fair 1960 11.6 m 12,023
ASHUELOT RIVER New Hampshire Good 1978 75.0 m 12,017
OYSTER RIVER New Hampshire Good 1991 9.5 m 11,978
THORNTONS FERRY ROAD New Hampshire Fair 1971 25.6 m 11,884
BOSTON POST RD BEAVER BK New Hampshire Fair 1969 41.5 m 11,884
NH122 New Hampshire Good 1969 52.7 m 11,884
I-293 FEE TPK New Hampshire Fair 1957 31.7 m 11,866
SMITH POND ROAD New Hampshire Fair 1959 20.9 m 11,864
CSX(ABD) New Hampshire Fair 1915 22.6 m 11,812
BLOODY BROOK New Hampshire Good 1998 30.2 m 11,782
NH101 New Hampshire Good 1999 66.8 m 11,782
BELLAMY RIVER New Hampshire Good 1982 24.4 m 11,771
RELIEF BEARCAMP RIVER New Hampshire Good 2021 54.4 m 11,700
CHOCORUA RIVER New Hampshire Good 1955 8.2 m 11,700
BEARCAMP RIVER New Hampshire Good 2021 127.7 m 11,700
OLD NH 16 OLD NH 25 New Hampshire Good 1970 30.5 m 11,700
LOVELL RIVER New Hampshire Good 2021 30.5 m 11,700
CONWAY LAKE OUTLET New Hampshire Good 2021 37.4 m 11,632
US 3 NH 11 New Hampshire Good 1964 18.6 m 11,620
TRAM ACCESS ROAD New Hampshire Fair 1986 30.8 m 11,599
PED UNDERPASS New Hampshire Good 1985 8.5 m 11,599
WALKER BROOK New Hampshire Fair 1985 9.3 m 11,599
NHRR New Hampshire Fair 1958 29.0 m 11,598
I-93 US 4 WB New Hampshire Fair 1958 77.7 m 11,598
PINE STREET New Hampshire Good 1967 34.7 m 11,594
CONNECTICUT RIVER New Hampshire Good 2015 137.7 m 11,594

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.