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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
SALMON BROOK New Hampshire Good 1998 7.8 m 4,876
WILLIAMS BROOK New Hampshire Good 1960 6.4 m 4,841
ANDREW BROOK New Hampshire Fair 1937 8.8 m 4,837
HALLS BROOK New Hampshire Fair 1964 6.7 m 4,826
BEAVER BROOK New Hampshire Good 1935 10.4 m 4,824
CONTOOCOOK RIVER New Hampshire Good 1984 59.4 m 4,813
AMMONOOSUC RIVER New Hampshire Fair 1980 92.7 m 4,777
NHRR(ABD) New Hampshire Fair 1979 19.5 m 4,777
TARBELL BROOK New Hampshire Fair 1958 6.4 m 4,755
CONTOOCOOK RIVER New Hampshire Fair 1939 36.0 m 4,746
BOG BROOK New Hampshire Fair 1956 55.2 m 4,726
CSX New Hampshire Fair 1980 58.8 m 4,724
CSX(ABD) New Hampshire Good 2021 7.9 m 4,712
CANAL 2 CHOATE BK New Hampshire Fair 1960 138.1 m 4,701
EXETER RIVER New Hampshire Good 1933 11.6 m 4,675
NH 16 SP TPK New Hampshire Good 1957 51.2 m 4,661
MASCOMA RIVER ROAD-GATED New Hampshire Fair 1966 63.7 m 4,655
LOVEJOY BROOK New Hampshire Fair 1961 38.1 m 4,649
SACO RIVER OVERFLOW New Hampshire Good 1955 37.6 m 4,649
SACO RIVER New Hampshire Fair 1950 62.2 m 4,649
LAKE TODD OUTLET New Hampshire Fair 1967 21.3 m 4,633
ROCKHAM BLVD BK PARKNLOT New Hampshire Fair 1991 443.8 m 4,631
NECRR New Hampshire Good 1996 35.4 m 4,608
SOUTH MILL POND New Hampshire Good 1985 7.9 m 4,588
BEAVER BROOK New Hampshire Good 1950 7.5 m 4,580
US 3 NH 11 New Hampshire Fair 1965 27.7 m 4,578
FEE TPK New Hampshire Fair 1954 54.3 m 4,571
GUNSTOCK RIVER New Hampshire Fair 1926 9.6 m 4,557
CSX(ABD) New Hampshire Good 1959 32.3 m 4,556
SOUHEGAN RIVER New Hampshire Fair 1951 18.0 m 4,552
I-93 US 4 New Hampshire Fair 2000 78.9 m 4,541
US 1 BYPASS New Hampshire Good 2015 41.4 m 4,516
CONTOOCOOK RIVER New Hampshire Fair 1893 75.0 m 4,507
AMMONOOSUC RIVER New Hampshire Fair 1960 86.0 m 4,499
INDUSTRIAL PK NHRR(ABD) New Hampshire Fair 1959 57.0 m 4,499
EUSTIS HILL ROAD New Hampshire Good 1959 13.7 m 4,499
LITTLE RIVER New Hampshire Good 2018 18.3 m 4,482
NH 18 NH135 New Hampshire Good 1983 30.2 m 4,453
SOUHEGAN RIVER New Hampshire Fair 1977 26.8 m 4,409
SUNCOOK RIVER New Hampshire Fair 1942 22.3 m 4,409
COCHECO RIVER New Hampshire Good 2018 51.0 m 4,392
BLOOD BROOK New Hampshire Fair 1937 14.0 m 4,387
CONVERSEVILLE BROOK New Hampshire Fair 1966 6.1 m 4,372
WHITTLE BROOK New Hampshire Fair 1932 7.3 m 4,360
US 3A NH 25 WB New Hampshire Fair 1965 37.1 m 4,355
BAKER RIVER New Hampshire Fair 1930 52.4 m 4,355
EXETER RIVER New Hampshire Good 1988 13.4 m 4,344
PEA BROOK New Hampshire Poor 1932 8.5 m 4,334
PEABODY RIVER New Hampshire Good 1982 56.7 m 4,334
US302 NH 10 NH 18 NH116 New Hampshire Fair 1959 23.8 m 4,291

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.