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
BNSF RR Iowa Good 1999 69.8 m 3,400
BNSF RR Iowa Good 1999 69.8 m 3,400
ABANDON RR BIKE PATH Iowa Fair 1960 43.0 m 3,400
STREAM Iowa Fair 1960 10.1 m 3,400
LINN CREEK Iowa Fair 1972 64.0 m 3,399
US 20 Iowa Fair 1973 87.5 m 3,398
WEST 32ND STREET Iowa Good 2002 37.5 m 3,397
BR WAPSINONOC CREEK Iowa Good 2022 7.6 m 3,390
CYLINDER CREEK Iowa Good 2023 30.8 m 3,390
I 29 & CBEC RR Iowa Good 2019 806.4 m 3,380
SMALL STREAM Iowa Fair 1966 6.7 m 3,370
STREAM Iowa Fair 1936 6.4 m 3,370
LITTLE BEAVER CREEK Iowa Good 1984 9.8 m 3,370
DRY RUN CREEK Iowa Good 1977 9.4 m 3,370
STREAM Iowa Good 1935 6.4 m 3,370
N.FORK LONG CREEK Iowa Good 1985 11.6 m 3,370
IOWA RIVER Iowa Fair 1984 137.5 m 3,370
WEST NODAWAY RIVER Iowa Fair 1972 102.4 m 3,360
STREAM Iowa Fair 1956 8.8 m 3,360
DRY RUN CREEK BIKE PATH Iowa Good 1992 147.2 m 3,360
STREAM Iowa Good 1993 7.6 m 3,360
BUCK CREEK Iowa Good 1971 39.0 m 3,360
CC RR Iowa Fair 1931 63.4 m 3,353
DONALDSON CREEK Iowa Good 2014 31.4 m 3,350
STREAM Iowa Good 1985 11.0 m 3,350
STREAM Iowa Fair 1979 31.4 m 3,350
I-35 Iowa Fair 1968 79.6 m 3,350
DME RR Iowa Good 2016 54.7 m 3,350
DME RR Iowa Fair 1977 54.9 m 3,350
WILLOW CREEK Iowa Fair 1949 15.2 m 3,347
14TH ST DRAINAGE DITCH Iowa Fair 1965 13.1 m 3,347
CREEK Iowa Good 2007 13.2 m 3,344
UPPER IOWA RIVER Iowa Fair 1963 125.6 m 3,340
CEDAR RIVER Iowa Fair 1984 171.6 m 3,340
TURKEY RIVER Iowa Fair 1968 159.1 m 3,340
MINERS CREEK Iowa Fair 1974 36.6 m 3,340
DRAINAGE DITCH Iowa Fair 1945 8.2 m 3,340
LUX CREEK Iowa Good 1986 8.8 m 3,340
SOUTH CEDAR CREEK Iowa Good 1983 125.3 m 3,340
NORTH CEDAR CREEK Iowa Fair 1983 61.0 m 3,340
OVER IMRL RR Iowa Good 2008 83.5 m 3,339
STREAM Iowa Good 2020 10.1 m 3,339
RAMSEY CREEK Iowa Fair 1994 37.5 m 3,330
STREAM Iowa Fair 1940 6.3 m 3,330
ENGLISH RIVER OVERFLOW Iowa Fair 1994 42.1 m 3,330
ENGLISH RIVER Iowa Good 1994 88.7 m 3,330
MC CARTY CREEK Iowa Good 1974 37.8 m 3,330
DRAINAGE DITCH Iowa Fair 1994 7.0 m 3,330
STREAM Iowa Fair 1976 7.0 m 3,330
WHITE BREAST CREEK Iowa Good 2017 82.6 m 3,330

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.