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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
GREAT EAST LAKE OUTLET New Hampshire Good 1920 12.2 m 665
MALLEGO BROOK New Hampshire Good 2020 13.5 m 665
OTTER BROOK New Hampshire Fair 1981 25.9 m 664
MASCOMA RIVER New Hampshire Good 1930 43.3 m 663
BUZZELS RUN BROOK New Hampshire Good 2010 7.6 m 662
SHERBURNE BROOK New Hampshire Good 2021 7.7 m 662
MERRYMEETING RIVER New Hampshire Fair 1926 7.3 m 662
CSX New Hampshire Fair 1910 10.2 m 657
INDIAN RIVER New Hampshire Poor 1930 16.5 m 655
CONTOOCOOK RIVER New Hampshire Fair 1925 18.0 m 646
CONNECTICUT RIVER New Hampshire Fair 1911 81.1 m 642
PISCATAQUOG RIVER New Hampshire Good 1940 19.8 m 641
MILL BROOK New Hampshire Fair 1940 7.3 m 641
GEER BROOK New Hampshire Good 1981 7.0 m 641
MILL CREEK New Hampshire Poor 1940 12.8 m 639
GRANT BROOK New Hampshire Good 1963 7.6 m 636
GREAT BROOK New Hampshire Fair 1955 6.8 m 630
GALE RIVER New Hampshire Fair 1930 17.7 m 629
BEAVER BROOK New Hampshire Poor 1932 9.1 m 629
MOUNTAIN BROOK New Hampshire Fair 1920 9.1 m 628
S BR PISCATAQUOG RIVER New Hampshire Fair 1938 17.1 m 620
ASHUELOT RIVER New Hampshire Fair 1837 36.6 m 618
SMITH RIVER New Hampshire Good 1997 12.8 m 617
I-93 US 4 New Hampshire Poor 1958 58.5 m 612
POWWOW RIVER New Hampshire Fair 1967 7.6 m 610
MOOSE BROOK New Hampshire Fair 1975 14.3 m 610
FARRAR POND New Hampshire Fair 1933 7.0 m 609
SHAKER BROOK New Hampshire Fair 1939 15.5 m 609
ROARING BROOK New Hampshire Poor 1955 10.4 m 607
EXETER RIVER New Hampshire Good 1979 13.7 m 607
RECREATION TRAIL New Hampshire Fair 1900 18.3 m 603
BISHOP BROOK New Hampshire Good 2017 16.8 m 602
POOR FARM BROOK New Hampshire Good 1966 9.4 m 599
LAFAYETTE BROOK New Hampshire Good 1932 17.1 m 593
BEARDS BROOK New Hampshire Fair 1919 11.0 m 592
GREAT BROOK New Hampshire Good 1953 12.9 m 591
SQUAM RIVER New Hampshire Fair 1990 19.5 m 588
I-93 PARKWAY New Hampshire Good 1986 47.2 m 587
GUNSTOCK RIVER New Hampshire Good 2007 9.5 m 587
POWWOW RIVER New Hampshire Poor 1976 10.1 m 586
SNOWS BROOK New Hampshire Fair 1985 19.8 m 585
ROARING BROOK New Hampshire Fair 1956 9.4 m 585
SUGAR RIVER New Hampshire Good 2019 38.1 m 585
BLOOD BROOK New Hampshire Good 2003 14.3 m 584
WILLIAMS BROOK New Hampshire Good 1960 7.0 m 582
EXETER RIVER New Hampshire Fair 1993 18.0 m 579
AXE HANDLE BROOK New Hampshire Good 2008 14.4 m 579
WILLEY BROOK New Hampshire Good 2002 8.8 m 578
BROOK New Hampshire Fair 1970 9.1 m 574
MINNEWAWA BROOK New Hampshire Fair 1930 13.7 m 574

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.