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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
WILD AMMONOOSUC RIVER New Hampshire Poor 1900 10.7 m 52
SLIPPERY BROOK New Hampshire Fair 1963 12.2 m 50
FEE TPK NB ON-RAMP New Hampshire Fair 2010 29.3 m 50
BUNGA JAR New Hampshire Fair 2007 12.2 m 50
TUNNEL BROOK New Hampshire Fair 1972 8.5 m 50
OTTER BROOK New Hampshire Poor 1967 13.8 m 50
S BR BAKER RIVER New Hampshire Good 1937 13.4 m 50
OLIVERIAN BROOK New Hampshire Fair 1965 7.6 m 50
SO. BR. GALE RIVER New Hampshire Good 2011 14.3 m 50
BUZZELL BROOK New Hampshire Good 2000 8.5 m 50
DOUGLAS BROOK New Hampshire Poor 1950 8.5 m 50
OSCEOLA BROOK New Hampshire Fair 1976 7.9 m 50
LIVERMORE TRIB 2 New Hampshire Good 2013 7.3 m 50
MAD RIVER New Hampshire Fair 1957 14.0 m 50
COCKERMOUTH RIVER New Hampshire Fair 2007 21.4 m 50
SAWYER RIVER New Hampshire Fair 1978 20.6 m 50
CONTOOCOOK RIVER New Hampshire Fair 1950 8.5 m 50
PEMIGEWASSET RIVER New Hampshire Fair 1886 15.8 m 50
WHITEFACE BROOK New Hampshire Good 2005 8.2 m 50
BEEBE RIVER New Hampshire Fair 1982 7.9 m 50
EASTMAN BROOK New Hampshire Fair 1982 12.2 m 50
MAD RIVER New Hampshire Fair 1949 8.5 m 50
N.BR. SAWYER RIVER New Hampshire Fair 1976 8.8 m 50
NO DATA ENTERED New Hampshire Good 2000 9.4 m 50
LOUISEVILLE BROOK New Hampshire Fair 1953 8.2 m 50
WALKER BROOK New Hampshire Poor 1975 9.8 m 50
TRIB TO LOUISVILLE BROOK New Hampshire Good 2023 12.2 m 50
CARRIGAN BROOK New Hampshire Fair 1979 28.3 m 50
PISCATAQUOG RIVER New Hampshire Good 2015 30.5 m 50
LIVERMORE TRIB 1 New Hampshire Good 2013 9.1 m 50
MOOSILAUKE BROOK New Hampshire Fair 1979 18.1 m 50
WILDCAT BROOK New Hampshire Fair 1977 8.5 m 50
GARDINER BROOK New Hampshire Fair 1981 7.9 m 50
ZEALAND RIVER New Hampshire Fair 1935 15.5 m 50
S.BR.GALE RIVER New Hampshire Fair 1972 8.5 m 50
N.BR. GALE RIVER New Hampshire Fair 1971 12.2 m 50
LITTLE RIVER New Hampshire Poor 1975 22.9 m 50
BOWEN BROOK New Hampshire Fair 1984 7.9 m 50
TUTTLE BROOK New Hampshire Fair 1980 7.3 m 50
E.BR. MILL BROOK New Hampshire Fair 1982 7.3 m 50
MILL BROOK New Hampshire Fair 1983 10.3 m 50
UPPER AMMONOOSUC RIVER New Hampshire Fair 1947 26.8 m 50
UPPER AMMONOOSUC New Hampshire Fair 1949 12.5 m 50
CULHANE BROOK New Hampshire Fair 1960 7.9 m 50
BURNT MILL BROOK New Hampshire Fair 1947 9.5 m 50
BLUE BROOK New Hampshire Fair 1947 12.8 m 50
LANGDON BROOK New Hampshire Fair 1970 7.9 m 50
JEFFERS BROOK New Hampshire Good 2001 8.5 m 50
JEFFERS BROOK New Hampshire Good 2001 8.5 m 50
JEFFERS BROOK New Hampshire Good 2001 8.5 m 50

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.