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
WHITE BREAST CREEK Iowa Good 2017 82.6 m 3,330
IA 58 Iowa Good 1995 75.3 m 3,320
IA 57 Iowa Good 1995 90.8 m 3,320
I-80 Iowa Fair 1966 67.4 m 3,316
COOPER CREEK Iowa Good 1971 57.3 m 3,310
MAQUOKETA RIVER Iowa Fair 1974 118.3 m 3,310
UP RR Iowa Good 2008 125.8 m 3,310
OVER CC RR & CATFISH CK Iowa Fair 1986 184.7 m 3,302
SKUNK RIVER Iowa Fair 1989 50.9 m 3,301
D 20 & UP RR Iowa Good 2008 125.2 m 3,300
OTTER CREEK Iowa Good 2019 93.7 m 3,300
SR D20 & UP RR Iowa Fair 1990 125.0 m 3,300
DM RIVER & B AVE Iowa Fair 1935 171.3 m 3,300
WINNEBAGO RIVER Iowa Good 1969 67.4 m 3,300
I-80 Iowa Fair 1962 71.9 m 3,300
I-80 Iowa Fair 1962 71.9 m 3,300
NORTH RACCOON RIVER Iowa Good 2012 224.1 m 3,300
NORTH RACCOON RIVER Iowa Good 2012 224.1 m 3,300
I 35 Iowa Good 2014 104.9 m 3,298
STREAM Iowa Good 1969 7.3 m 3,290
CALMUS CREEK Iowa Fair 1964 22.9 m 3,290
UNNAMED CREEK Iowa Fair 1928 6.7 m 3,290
BEAVER CREEK Iowa Good 1993 44.8 m 3,290
STREAM Iowa Fair 1952 7.9 m 3,287
STREAM Iowa Good 1994 7.6 m 3,280
US 61 Iowa Fair 1997 70.7 m 3,277
SMALL STREAM Iowa Fair 1982 6.4 m 3,270
SM STREAM Iowa Good 2002 7.0 m 3,270
MAPLE RIVER Iowa Fair 1985 37.5 m 3,270
OVER UP RR Iowa Fair 1972 112.2 m 3,270
EAST BOYER RIVER Iowa Fair 1997 73.5 m 3,270
NORTH RACCOON RIVER Iowa Good 2010 118.6 m 3,270
SMALL STREAM Iowa Good 2002 13.1 m 3,270
DES MOINES RIVER Iowa Good 2002 204.5 m 3,270
MUD CREEK Iowa Fair 1975 56.1 m 3,270
CROW CREEK Iowa Good 1985 31.4 m 3,267
UP RR & 210TH ST Iowa Good 2021 129.2 m 3,260
DRAINAGE DITCH Iowa Fair 1974 13.4 m 3,260
FLINT CREEK Iowa Good 2021 101.2 m 3,260
LITTLE FLOYD RIVER Iowa Good 2005 69.5 m 3,250
LITTLE SIOUX RIVER Iowa Fair 2017 150.2 m 3,250
WINNEBAGO RIVER Iowa Good 2009 68.0 m 3,250
WOLF CREEK Iowa Good 2015 46.0 m 3,250
LITTLE FLOYD RIVER Iowa Good 2006 69.5 m 3,250
HILTON CREEK Iowa Good 2010 46.8 m 3,250
LITTLE SIOUX RIVER Iowa Fair 2016 150.2 m 3,250
WOLF CREEK Iowa Good 2018 46.0 m 3,250
SOUTH SKUNK RIVER Iowa Fair 1979 142.3 m 3,250
IA 92 (S JCT) Iowa Fair 1978 103.6 m 3,250
OTTER CREEK Iowa Good 2019 93.7 m 3,250

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.