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
THUNDER CREEK Iowa Good 1999 34.1 m 1,770
SOUTH FOX CREEK Iowa Good 2011 10.3 m 1,770
SO FORK IOWA RIVER Iowa Good 1981 78.0 m 1,770
GRANGER CREEK Iowa Good 2019 11.8 m 1,770
E BR WAPSINONOC CREEK Iowa Poor 1920 18.3 m 1,770
GOSHEN DITCH Iowa Fair 1981 22.3 m 1,770
CEDAR RIVER Iowa Fair 1972 315.8 m 1,770
SUGAR CREEK Iowa Fair 1973 64.9 m 1,770
MUD CREEK Iowa Good 2023 37.5 m 1,770
HEATON CREEK Iowa Good 2018 31.4 m 1,768
BEAVER CREEK Iowa Fair 1984 90.5 m 1,760
INDIAN CREEK Iowa Fair 1959 86.6 m 1,760
SPRING CREEK Iowa Fair 1960 56.1 m 1,760
EAST NISHNABOTNA RIVER Iowa Fair 1961 117.7 m 1,760
LITTLE WAPSIPINICON RVR Iowa Good 1989 53.3 m 1,760
GYPSUM MINE HAUL RD Iowa Good 2017 33.5 m 1,760
SO.FORK ENGLISH RIVER Iowa Fair 1987 67.4 m 1,760
DRY CREEK Iowa Poor 1972 30.5 m 1,755
E BLUE CREEK Iowa Fair 1995 10.7 m 1,753
ROCK CREEK Iowa Good 1981 50.0 m 1,752
MASON CREEK Iowa Good 2011 50.8 m 1,750
OTTER CREEK Iowa Good 1989 42.1 m 1,750
WALNUT CREEK Iowa Good 1988 40.5 m 1,750
EAST FORK GRAND RIVER Iowa Fair 1985 48.5 m 1,750
LOTTS CREEK Iowa Good 1985 37.5 m 1,750
U.S. 20 Iowa Good 1980 81.7 m 1,748
DES MOINES RIVER Iowa Good 1995 145.1 m 1,746
BREWERS CREEK Iowa Good 1995 23.8 m 1,745
STREAM Iowa Good 1994 9.1 m 1,740
STREAM Iowa Fair 1994 42.4 m 1,740
COLD WATER CREEK Iowa Good 2010 67.4 m 1,740
BRANCH PONY CREEK Iowa Good 1975 6.7 m 1,740
DRAINAGE DITCH #2 Iowa Good 2019 39.9 m 1,740
DRAINAGE DITCH #94 Iowa Good 2019 33.8 m 1,740
BALES BRANCH CR. Iowa Good 1983 8.7 m 1,738
UP RR Iowa Fair 2008 88.1 m 1,738
MAQUOKETA RIVER Iowa Fair 1987 38.1 m 1,738
LYNN CREEK Iowa Good 2008 64.9 m 1,738
US 75 Iowa Fair 1998 92.4 m 1,735
US 18 Iowa Good 2004 76.8 m 1,735
U.S. 18 Iowa Good 2004 76.8 m 1,735
PONY CREEK Iowa Poor 1966 61.0 m 1,733
SO FK MAQUOKETA RIVER Iowa Good 1999 98.8 m 1,730
LITTLE WAPSIPINICON RVR Iowa Fair 1959 43.6 m 1,730
OTTER CREEK Iowa Fair 1922 25.3 m 1,730
DRAINAGE DITCH Iowa Good 1984 6.4 m 1,730
STREAM Iowa Fair 1962 7.3 m 1,730
NORTH ENGLISH RIVER Iowa Fair 1962 55.8 m 1,730
STREAM Iowa Fair 1938 6.4 m 1,730
WALNUT CREEK Iowa Fair 1985 39.0 m 1,730

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.