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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
NORTH BRANCH RIVER New Hampshire Fair 1951 21.3 m 7,411
BEARDS BROOK BEARDS RD New Hampshire Good 2002 125.3 m 7,409
MILL TAIL RACE New Hampshire Fair 1937 7.6 m 7,405
CONTOOCOOK RIVER New Hampshire Fair 1937 18.3 m 7,405
CONNECTICUT RIVER New Hampshire Fair 1928 82.3 m 7,367
SMITH RIVER New Hampshire Good 1900 9.4 m 7,358
TIDAL BASIN New Hampshire Fair 1971 42.7 m 7,353
TIDAL BASIN New Hampshire Fair 1971 40.5 m 7,353
I-293 NH101 New Hampshire Good 1960 91.4 m 7,350
US 3 NHRR New Hampshire Good 1970 57.6 m 7,345
MINNEWAWA BROOK New Hampshire Good 1986 17.7 m 7,333
I-95 New Hampshire Fair 1975 90.2 m 7,327
GUNSTOCK RIVER New Hampshire Good 1958 7.0 m 7,313
I-93 New Hampshire Good 2019 95.6 m 7,299
CONRAD ROAD New Hampshire Good 1994 19.2 m 7,294
E BR PEMIGEWASSET RIVER New Hampshire Good 1972 86.3 m 7,285
ASHUELOT RIVER New Hampshire Good 2014 69.7 m 7,282
HUBBARD BROOK New Hampshire Fair 1970 11.6 m 7,263
MERRILL ACCESS RD New Hampshire Good 1969 21.3 m 7,263
MIRROR LAKE ROAD New Hampshire Good 1970 22.9 m 7,263
STEVENS BROOK New Hampshire Good 1966 9.8 m 7,253
BABOOSIC BROOK New Hampshire Good 2020 28.3 m 7,218
OTTER POND OUTLET New Hampshire Fair 1954 7.3 m 7,212
SUGAR RIVER New Hampshire Fair 1957 24.1 m 7,207
TIDE MILL CREEK New Hampshire Good 1988 38.4 m 7,203
LAKE MASSABESIC New Hampshire Good 2001 14.6 m 7,177
EASTMAN BROOK New Hampshire Good 1972 12.8 m 7,166
NH175 New Hampshire Fair 1972 25.9 m 7,166
PEMIGEWASSET RIVER New Hampshire Fair 1970 124.4 m 7,166
TRIPOLI ROAD New Hampshire Fair 1972 45.1 m 7,166
LAMPREY RIVER New Hampshire Fair 1989 10.7 m 7,161
NH112 NHRR New Hampshire Good 1972 45.7 m 7,160
E BR PEMIGEWASSET RIVER New Hampshire Fair 1972 111.3 m 7,160
N BR CONTOOCOOK RIVER New Hampshire Good 1999 22.1 m 7,112
MIRROR LAKE ROAD New Hampshire Good 1970 22.9 m 7,102
MERRILL ACCESS RD New Hampshire Good 1969 21.3 m 7,102
HUBBARD BROOK New Hampshire Fair 1970 11.6 m 7,102
CSX(ABD) New Hampshire Fair 1940 13.4 m 7,092
ISLAND POND OUTLET New Hampshire Fair 1964 6.1 m 7,040
TRIPOLI ROAD New Hampshire Fair 1972 45.1 m 7,017
PEMIGEWASSET RIVER New Hampshire Fair 1970 124.4 m 7,017
EASTMAN BROOK New Hampshire Good 1972 12.2 m 7,017
NH175 New Hampshire Fair 1972 25.9 m 7,017
PISCATAQUA R BACK CHAN New Hampshire Fair 1913 91.4 m 7,000
CONTOOCOOK RIVER New Hampshire Fair 1935 37.2 m 6,971
BLOOD BROOK New Hampshire Fair 1931 7.0 m 6,922
I-93 New Hampshire Good 2007 132.0 m 6,905
NHRR New Hampshire Fair 1958 38.7 m 6,898
STOCKER BROOK New Hampshire Fair 1936 9.1 m 6,896
SAWYER BROOK New Hampshire Fair 1968 6.7 m 6,896

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.