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
OVER ABANDON RR Iowa Good 1973 36.0 m 1,561
TRIB TO ELK RUN CREEK Iowa Good 1996 15.9 m 1,561
BRUCE CREEK Iowa Fair 1955 12.2 m 1,560
RACCOON RIVER Iowa Fair 1980 89.6 m 1,560
PRAIRIE CREEK Iowa Fair 1980 25.3 m 1,560
UPPER IOWA RIVER Iowa Good 1990 79.6 m 1,560
STREAM Iowa Good 1990 11.6 m 1,560
STREAM Iowa Fair 1995 40.8 m 1,560
STREAM Iowa Fair 1960 10.7 m 1,560
STREAM Iowa Fair 1984 36.6 m 1,560
STREAM Iowa Fair 1967 9.8 m 1,560
DRAINAGE Iowa Good 2001 8.8 m 1,560
LAKE CREEK Iowa Fair 1980 40.5 m 1,560
STREAM Iowa Good 2015 12.8 m 1,560
DEVILS RUN CREEK Iowa Good 2015 8.2 m 1,560
INDIAN CREEK Iowa Good 2006 26.5 m 1,555
E FORK LOTTS CREEK Iowa Good 1985 26.8 m 1,550
OVER UP RR Iowa Fair 1957 92.4 m 1,550
PRATT CREEK Iowa Good 2010 43.7 m 1,550
WALNUT CREEK Iowa Fair 1977 61.3 m 1,550
DRAINAGE DITCH Iowa Good 1976 11.9 m 1,550
BRANCH MIDDLE CREEK Iowa Fair 1961 9.1 m 1,550
MIDDLE CREEK Iowa Fair 1962 6.4 m 1,550
LITTLE SIOUX RIVER Iowa Fair 1982 154.5 m 1,547
SPRING CREEK Iowa Fair 1984 6.4 m 1,547
STREAM Iowa Poor 1970 76.8 m 1,544
RED OAK CREEK Iowa Fair 1965 12.2 m 1,543
CEDAR RIVER Iowa Fair 2012 160.3 m 1,542
WOLF CREEK Iowa Good 2012 110.9 m 1,542
MAQUOKETA RIVER Iowa Good 2011 39.6 m 1,540
UPPER IOWA RIVER Iowa Good 1997 79.6 m 1,540
ENTERPRISE CREEK Iowa Good 1995 54.6 m 1,540
BEAVER CREEK Iowa Fair 1977 15.2 m 1,540
INDIAN CREEK Iowa Fair 1935 8.8 m 1,540
NATURAL STREAM Iowa Fair 1951 6.7 m 1,540
HAYES LAKE Iowa Good 1998 90.5 m 1,540
MARVEL CREEK Iowa Good 2020 40.6 m 1,540
HICKORY CREEK Iowa Good 1993 31.4 m 1,540
EAST OTTER CREEK Iowa Fair 1951 37.8 m 1,540
WHITE BREAST CREEK Iowa Fair 1974 37.5 m 1,540
I-35 & IA #5 RAMP C Iowa Good 2000 252.1 m 1,540
SMALL NATURAL STREAM Iowa Fair 1926 6.4 m 1,534
LITTLE BEAVER CREEK Iowa Good 2017 8.0 m 1,534
INDIAN CREEK Iowa Fair 1987 10.7 m 1,534
MUD CREEK Iowa Fair 1992 46.9 m 1,532
POYNER CREEK Iowa Fair 1955 17.6 m 1,532
TRIB TO INDIAN CREEK Iowa Poor 1957 7.6 m 1,532
STREAM Iowa Good 2020 10.7 m 1,532
FOUR MILE CREEK Iowa Good 1991 61.3 m 1,532
CEDAR RIVER Iowa Good 2023 152.7 m 1,531

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.