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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
NEWFOUND RIVER New Hampshire Fair 1982 14.6 m 1,382
CSX New Hampshire Fair 1973 11.3 m 1,379
LAMPREY RIVER New Hampshire Good 1912 20.4 m 1,378
PISCASSIC RIVER New Hampshire Good 1931 9.4 m 1,378
SUGAR RIVER New Hampshire Poor 1974 59.1 m 1,376
JACOBS BROOK New Hampshire Fair 1938 11.6 m 1,375
SOUCOOK RIVER New Hampshire Fair 1960 20.1 m 1,373
I-89 SB WARNER RIVER New Hampshire Poor 1966 74.7 m 1,372
I-89 NB New Hampshire Fair 1966 24.7 m 1,372
PISCATAQUOG RIVER New Hampshire Good 1994 29.6 m 1,371
NUBANUSIT BROOK New Hampshire Good 1937 22.3 m 1,369
PISCATAQUOG RIVER New Hampshire Good 2000 19.2 m 1,366
MASCOMA LAKE New Hampshire Good 2012 105.2 m 1,358
MASCOMA RIVER New Hampshire Good 1954 28.0 m 1,358
MASCOMA RIVER New Hampshire Good 2003 33.8 m 1,358
SUGAR RIVER New Hampshire Fair 1959 43.9 m 1,345
CONNECTICUT RIVER New Hampshire Fair 1931 67.4 m 1,342
INDIAN STREAM New Hampshire Good 1976 28.7 m 1,342
ASHUELOT RIVER New Hampshire Fair 1976 59.7 m 1,336
ISINGLASS RIVER New Hampshire Fair 1979 20.4 m 1,329
WILDCAT BROOK New Hampshire Fair 1931 24.1 m 1,305
BEAVER BROOK New Hampshire Good 2015 13.6 m 1,303
FOWLER RIVER New Hampshire Fair 1931 14.9 m 1,300
WEST BR SOUHEGAN RIVER New Hampshire Fair 1936 10.1 m 1,299
BAGLEY BROOK New Hampshire Fair 1933 8.2 m 1,291
HUBBARD BROOK New Hampshire Good 1971 15.5 m 1,291
COCHECO RIVER New Hampshire Good 1920 27.4 m 1,290
SALMON BROOK New Hampshire Fair 1969 7.6 m 1,287
I-89 NH 10 New Hampshire Good 1966 57.0 m 1,275
LITTLE HARBOR New Hampshire Fair 1958 85.6 m 1,272
COLD RIVER New Hampshire Fair 2009 27.5 m 1,265
ISINGLASS RIVER New Hampshire Good 1947 12.2 m 1,264
SUNCOOK RIVER New Hampshire Fair 1929 7.6 m 1,261
LAMPREY RIVER New Hampshire Good 1964 21.0 m 1,255
NHRR(ABD) New Hampshire Fair 1953 11.3 m 1,255
MOOSE BROOK New Hampshire Good 1939 23.2 m 1,254
BEAN BROOK New Hampshire Good 2000 52.7 m 1,247
EASTMAN BROOK New Hampshire Fair 1952 9.1 m 1,247
BROAD ST PKWY CSX New Hampshire Good 2015 57.3 m 1,247
CONTOOCOOK RIVER New Hampshire Fair 1980 74.4 m 1,246
LAKE WINNIPESAUKEE New Hampshire Good 1988 43.0 m 1,237
HARTSHORN BROOK New Hampshire Good 2015 9.4 m 1,236
COCHECO RIVER New Hampshire Good 2010 54.5 m 1,233
PENNICHUCK BROOK New Hampshire Good 2001 14.2 m 1,231
BAILEY BROOK New Hampshire Fair 1939 8.2 m 1,215
S BR PISCATAQUOG RIVER New Hampshire Fair 1937 34.7 m 1,201
BOG BROOK New Hampshire Poor 1929 12.2 m 1,193
MINNEWAWA BROOK New Hampshire Poor 1939 27.4 m 1,191
ARBORETUM DRIVE New Hampshire Fair 1972 13.4 m 1,183
SUNCOOK RIVER New Hampshire Good 1992 11.0 m 1,172

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.