Browse Bridge Database

23,716 bridges in the FHWA National Bridge Inventory in Iowa.

National Bridge Inventory Database

Browse 23,716 bridges from the Federal Highway Administration National Bridge Inventory. Filter by state, condition rating, or search by name and location.

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BridgeLocationConditionYear BuiltLengthADT
W TRIB TO ELWOOD CREEK Iowa Fair 1952 19.5 m 1,000
ELWOOD CREEK Iowa Fair 1952 37.8 m 1,000
IAIS RR Iowa Fair 1956 100.9 m 1,000
SMALL STREAM Iowa Good 2002 6.7 m 999
COTA CREEK Iowa Fair 1987 50.9 m 999
MUD CREEK Iowa Fair 2011 62.2 m 998
OTTER CREEK Iowa Poor 1951 56.4 m 996
MIDDLE RIVER Iowa Poor 1959 47.9 m 996
FLOYD RIVER Iowa Good 1975 77.6 m 995
WEST FORK DES MOINES R Iowa Fair 1989 75.3 m 995
WINNEBAGO RIVER Iowa Fair 1960 51.2 m 992
WALTON CREEK Iowa Good 2023 33.5 m 992
TRIB. TO WAPSI RIVER Iowa Good 1974 9.1 m 992
LIME CREEK Iowa Fair 1951 28.0 m 992
SMALL STREAM Iowa Fair 1984 15.9 m 992
US 30 Iowa Good 1985 123.7 m 990
DRAINAGE DITCH Iowa Good 1973 10.1 m 990
NS & BNSF RR Iowa Fair 1967 62.5 m 990
TURKEY CREEK Iowa Fair 1964 23.8 m 990
DRAINAGE Iowa Good 2016 6.4 m 990
LITTLE MOSQUITO CREEK Iowa Poor 1964 31.1 m 990
FOX RIVER Iowa Good 2009 6.4 m 990
NORTH FOX CREEK Iowa Good 2009 6.7 m 990
CEDAR RIVER Iowa Poor 1966 321.3 m 990
DRAINAGE DITCH Iowa Good 2009 6.4 m 990
CENTER BRANCH FOX RIVER Iowa Good 2009 6.7 m 990
NO NAME CREEK Iowa Good 1965 6.7 m 988
NO NAME CREEK Iowa Good 2018 20.6 m 988
CALAMUS CREEK Iowa Good 2023 15.9 m 988
GRANT OPEN DITCH EXT 5 Iowa Fair 1977 16.5 m 988
OLD SKUNK RIVER TRIBUTAR Iowa Good 1992 15.5 m 984
BUFFALO CREEK Iowa Good 2002 65.2 m 982
TRIB TO BLACK HAWK CREEK Iowa Good 1986 11.6 m 982
BLACK HAWK CREEK Iowa Fair 1942 73.2 m 982
EAST OTTER CREEK Iowa Poor 1962 9.8 m 982
STREAM Iowa Fair 1965 14.0 m 982
SMALL STREAM Iowa Fair 1968 7.9 m 982
PAINT CREEK Iowa Fair 1986 59.7 m 982
STREAM Iowa Fair 1968 6.7 m 982
BEAR CREEK Iowa Fair 1955 84.7 m 980
US 63 Iowa Good 1983 118.3 m 980
BR RAPID CREEK Iowa Fair 1993 7.0 m 980
STREAM Iowa Fair 1955 8.2 m 980
MINERAL CREEK Iowa Fair 1929 16.4 m 980
UPPER IOWA RIVER Iowa Fair 1955 98.1 m 980
SMALL NATURAL STREAM Iowa Fair 1957 6.7 m 980
WALNUT CREEK Iowa Fair 1958 36.6 m 980
RELOC US 30 Iowa Good 1995 81.7 m 978
CAMP CREEK Iowa Poor 1978 39.0 m 977
BOONE RIVER Iowa Poor 1951 73.8 m 977

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.