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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
NHRR(ABD) New Hampshire Fair 1937 31.7 m 2,503
NORTH RIVER New Hampshire Good 1994 7.6 m 2,493
SACO RIVER New Hampshire Fair 1890 69.2 m 2,490
ISRAEL RIVER New Hampshire Fair 1974 50.0 m 2,467
BRANCH RIVER New Hampshire Good 1966 39.3 m 2,458
ASHUELOT RIVER New Hampshire Fair 1949 18.9 m 2,456
GORDON POND BROOK New Hampshire Fair 1940 13.3 m 2,448
NH141 New Hampshire Fair 1959 20.4 m 2,447
NH141 New Hampshire Good 1972 20.7 m 2,437
BLOW-ME-DOWN BROOK New Hampshire Good 1959 11.6 m 2,429
WILLIAMS BROOK New Hampshire Good 1985 13.7 m 2,425
SPICKET RIVER New Hampshire Good 2008 6.7 m 2,410
CONNECTICUT RIVER New Hampshire Fair 1929 108.2 m 2,403
WALLACE HILL ROAD New Hampshire Good 1959 17.7 m 2,397
NH142 New Hampshire Good 1959 17.7 m 2,397
PISCASSIC RIVER New Hampshire Fair 1947 8.8 m 2,386
MASCOMA RIVER New Hampshire Good 1985 28.0 m 2,381
OLIVERIAN BROOK New Hampshire Fair 1937 20.7 m 2,334
HARVARD BROOK New Hampshire Good 1930 13.4 m 2,333
HEWES BROOK New Hampshire Good 1966 8.5 m 2,327
HITTYTITY BROOK New Hampshire Good 2013 7.9 m 2,321
WALLACE HILL ROAD New Hampshire Good 1973 17.7 m 2,316
NH142 New Hampshire Good 1973 17.7 m 2,316
US202 NH 9 New Hampshire Good 2002 35.7 m 2,316
ASH SWAMP BROOK New Hampshire Good 1990 7.3 m 2,304
SUGAR RIVER New Hampshire Fair 1920 9.1 m 2,301
REDWATER BROOK New Hampshire Good 1956 7.0 m 2,300
ROARING BROOK New Hampshire Fair 1962 10.4 m 2,294
POWWOW RIVER New Hampshire Good 2009 6.7 m 2,286
WILLEY BROOK New Hampshire Fair 1922 8.2 m 2,283
COCHECO RIVER New Hampshire Good 2009 82.0 m 2,280
ELLIS RIVER New Hampshire Fair 1876 36.9 m 2,280
ASHUELOT RIVER New Hampshire Fair 1949 24.4 m 2,274
SALMON BROOK New Hampshire Good 1999 11.9 m 2,270
GALE RIVER New Hampshire Good 1992 29.0 m 2,264
BEARCAMP RIVER New Hampshire Good 2018 42.4 m 2,263
I-93 FEE TPK New Hampshire Fair 1978 83.2 m 2,263
SWIFT RIVER New Hampshire Fair 1987 29.3 m 2,249
MILL BROOK New Hampshire Good 1987 16.2 m 2,249
TAYLOR RIVER New Hampshire Good 1977 8.2 m 2,242
I-95 New Hampshire Fair 1974 80.5 m 2,242
NH101 New Hampshire Good 1995 28.7 m 2,242
AMMONOOSUC RIVER New Hampshire Good 1995 98.1 m 2,234
CONTOOCOOK RIVER New Hampshire Fair 1929 43.9 m 2,233
MILL TAIL RACE New Hampshire Good 1988 15.5 m 2,233
MONADNOCK MILL CANAL New Hampshire Poor 1922 8.5 m 2,233
MCQUADE BROOK New Hampshire Good 2012 9.1 m 2,225
BABOOSIC BROOK New Hampshire Good 2008 10.4 m 2,225
SUGAR RIVER New Hampshire Good 1957 30.5 m 2,220
ISINGLASS RIVER New Hampshire Fair 1923 7.6 m 2,212

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.