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
SIMMONS CREEK Iowa Fair 1964 23.5 m 1,610
BIG SIOUX RIVER Iowa Fair 1963 122.2 m 1,607
IA 9 Iowa Good 2006 61.9 m 1,605
IA 9 Iowa Good 2006 61.9 m 1,605
I 35 Iowa Good 2017 226.4 m 1,603
TURKEY RIVER Iowa Fair 1980 71.3 m 1,601
STREAM Iowa Fair 1974 34.4 m 1,600
ASHTON CREEK Iowa Fair 1974 40.5 m 1,600
MUD CREEK Iowa Poor 1972 39.0 m 1,600
PINE CREEK Iowa Poor 1955 7.6 m 1,600
MCCLOUDS RUN Iowa Fair 1979 11.9 m 1,597
DRAINAGE Iowa Fair 1978 8.2 m 1,596
IA 5 & IA 92 Iowa Fair 1978 134.7 m 1,590
DUCK CREEK Iowa Fair 1978 64.3 m 1,590
STREAM Iowa Fair 1947 31.4 m 1,590
DME RR Iowa Good 2023 145.0 m 1,590
FLOYD RIVER Iowa Good 1985 74.1 m 1,586
BNSF RR Iowa Good 2023 63.1 m 1,585
S BR DRY RUN CREEK Iowa Good 2010 17.6 m 1,585
CANOE CREEK Iowa Good 2002 57.6 m 1,581
DRAINAGE DITCH Iowa Fair 1956 9.8 m 1,580
INDIAN CREEK Iowa Good 2001 64.3 m 1,580
MUD CREEK Iowa Poor 1971 47.2 m 1,580
I-80 Iowa Fair 1959 66.4 m 1,580
US 218 Iowa Fair 1980 79.9 m 1,580
I-35 Iowa Good 2000 123.7 m 1,572
RACCOON RIVER Iowa Poor 1947 101.8 m 1,572
CEDAR RIVER OVERFLOW Iowa Fair 2003 8.7 m 1,571
CHESALEA CREEK Iowa Fair 2004 7.6 m 1,571
CEDAR RIVER Iowa Fair 1958 234.4 m 1,571
CEDAR RIVER OVERFLOW Iowa Fair 1979 9.7 m 1,571
TRIB TO MILLER CREEK Iowa Good 2014 21.3 m 1,571
CEDAR RIVER OVERFLOW Iowa Fair 1979 10.1 m 1,571
SKUNK RIVER Iowa Fair 1960 159.7 m 1,570
W.FORK NISHNABOTNA RIVER Iowa Fair 1988 63.7 m 1,570
DRAINAGE DITCH Iowa Fair 1975 8.8 m 1,570
S FORK CATFISH CREEK Iowa Good 2018 69.9 m 1,570
BAUGHMANS CREEK Iowa Fair 1973 31.4 m 1,570
WESTFIELD CREEK Iowa Fair 1962 47.2 m 1,570
BIG SIOUX OVERFLOW Iowa Fair 1962 31.1 m 1,570
BIG SIOUX OVERFLOW Iowa Fair 1962 31.1 m 1,570
BIG SIOUX RIVER Iowa Good 2010 154.2 m 1,570
STREAM Iowa Good 1989 10.2 m 1,570
MUD CREEK Iowa Fair 1931 12.8 m 1,570
BUCK CREEK Iowa Good 1976 58.5 m 1,570
FLOYD RIVER Iowa Good 2007 87.8 m 1,566
STREAM Iowa Fair 1970 11.3 m 1,564
SMALL STREAM Iowa Fair 1993 6.4 m 1,564
SMALL STREAM Iowa Good 1993 8.5 m 1,564
TRIB TO ELK RUN CREEK Iowa Good 1996 15.9 m 1,561

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.