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
STREAM Iowa Fair 1958 7.6 m 2,900
SOUTH SKUNK RIVER Iowa Fair 1985 138.1 m 2,900
BIG CREEK Iowa Good 2002 66.8 m 2,900
IOWA RIVER Iowa Good 2022 64.6 m 2,900
MUD CREEK Iowa Fair 1984 23.8 m 2,896
DRAINAGE DITCH Iowa Good 2010 24.1 m 2,892
DRY CREEK Iowa Fair 1987 7.0 m 2,890
UNNAMED STREAM Iowa Good 2011 11.9 m 2,887
ODEBOLT CREEK Iowa Poor 1967 46.6 m 2,884
STREAM Iowa Good 1989 7.9 m 2,880
DRAINAGE DITCH Iowa Good 1985 24.1 m 2,880
E FORK DES MOINES RIVER Iowa Fair 1971 75.0 m 2,880
E FORK DES MOINES RIVER Iowa Fair 1971 75.0 m 2,880
LITTLE TARKIO CREEK Iowa Fair 1964 46.6 m 2,880
QUARTER SECTION RUN Iowa Good 1994 39.0 m 2,877
US 20 Iowa Good 2016 77.8 m 2,877
S RACCOON RIVER Iowa Good 2007 149.0 m 2,872
CREEK Iowa Good 2003 9.8 m 2,863
BNSF RR & CITY STREETS Iowa Fair 1972 231.6 m 2,860
POYNER CREEK Iowa Good 2014 8.8 m 2,860
DRAINAGE DITCH Iowa Fair 1985 7.6 m 2,860
TURKEY RIVER Iowa Good 2006 95.7 m 2,860
L 34 Iowa Fair 1966 46.3 m 2,850
I-80 Iowa Good 1965 72.8 m 2,850
US 218 Iowa Fair 2002 69.5 m 2,850
IOWA 191 Iowa Fair 1966 64.0 m 2,850
BNSF RR Iowa Fair 1966 46.9 m 2,850
BNSF RR Iowa Fair 1966 46.9 m 2,850
L 34 Iowa Fair 1966 46.3 m 2,850
110TH PLACE Iowa Good 1978 46.9 m 2,850
IOWA 191 Iowa Fair 1966 64.0 m 2,850
WOLF CREEK Iowa Fair 1921 18.9 m 2,850
DES MOINES RIVER Iowa Good 2010 125.7 m 2,850
110TH PLACE Iowa Good 1978 46.9 m 2,850
RALSTON CREEK Iowa Good 2019 13.7 m 2,850
MONKEY RUN CREEK Iowa Fair 1984 37.5 m 2,850
US 30 Iowa Good 1995 86.0 m 2,847
US 61 Iowa Good 2010 79.9 m 2,840
IOWA RIVER Iowa Fair 1989 177.1 m 2,840
MUCHAKINOCK CREEK Iowa Good 2021 71.3 m 2,840
ROCK CREEK Iowa Poor 1965 31.1 m 2,838
IOWA RIVER Iowa Poor 1955 162.8 m 2,838
WAPSIPINICON RIVER Iowa Fair 1968 77.1 m 2,834
STREAM Iowa Fair 1952 9.1 m 2,834
QUARTER SECTION RUN Iowa Good 2010 15.9 m 2,830
CHARITON RIVER Iowa Good 1983 81.1 m 2,830
CRAINS CREEK Iowa Fair 1958 51.8 m 2,830
DRAINAGE DITCH Iowa Fair 1968 7.6 m 2,830
WILLOW CREEK Iowa Fair 1970 54.9 m 2,830
WAPSINONOC CREEK Iowa Good 1988 70.1 m 2,830

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.