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
SNAKE CREEK Iowa Good 1987 7.6 m 1,690
BRANCH MAQUOKETA RIVER Iowa Fair 1931 9.7 m 1,690
EASTER LAKE Iowa Good 2018 34.4 m 1,686
COAL CREEK Iowa Fair 1979 40.5 m 1,680
GOOSE CREEK Iowa Fair 1900 14.0 m 1,680
UNNAMED STREAM Iowa Good 2016 7.8 m 1,680
BRANCH MAQUOKETA RIVER Iowa Fair 1931 7.9 m 1,680
N FORK LITTLE MAQUOKETA Iowa Fair 1967 46.9 m 1,680
BEEDS CREEK Iowa Fair 1929 19.2 m 1,680
CROW CREEK Iowa Fair 1954 15.9 m 1,680
STREAM Iowa Good 2002 7.6 m 1,680
NEOLA CREEK Iowa Fair 1928 13.1 m 1,676
SPENCER CREEK TRIB Iowa Good 2021 29.9 m 1,676
STREAM Iowa Poor 1952 7.3 m 1,676
WILLOW CREEK Iowa Good 2020 27.4 m 1,676
PERRY CREEK Iowa Fair 1950 41.8 m 1,675
CREEK Iowa Good 2001 7.0 m 1,673
DRAINAGE DITCH Iowa Fair 2003 11.0 m 1,670
BIG CREEK Iowa Fair 1984 58.5 m 1,669
ALLEN CREEK Iowa Fair 1974 7.3 m 1,669
ABBEY CREEK Iowa Fair 1974 37.5 m 1,669
US 61 Iowa Good 2000 68.3 m 1,666
BACON CREEK Iowa Poor 1900 6.4 m 1,664
RALSTON CREEK Iowa Good 2020 12.3 m 1,664
SMALL STREAM Iowa Fair 1953 11.0 m 1,664
STREAM Iowa Good 2012 11.6 m 1,661
RED ROCK CREEK Iowa Good 1987 29.9 m 1,660
ROCK CREEK Iowa Poor 1967 32.6 m 1,660
ROCK CREEK Iowa Good 1996 42.4 m 1,660
INDIAN CREEK Iowa Good 2003 59.1 m 1,660
SIMMONS CREEK Iowa Good 1989 35.7 m 1,660
US 30 Iowa Good 1969 65.8 m 1,660
BIG CREEK Iowa Good 2005 46.6 m 1,660
PRAIRIE CREEK Iowa Fair 1960 55.8 m 1,660
MUD CREEK Iowa Good 2017 32.9 m 1,660
TRIB TO MILLER CREEK Iowa Fair 1994 31.4 m 1,660
TRIB TO MILLER CREEK Iowa Fair 1994 27.7 m 1,660
MILLER CREEK Iowa Good 2004 40.5 m 1,660
FLOYD RIVER Iowa Fair 1962 101.2 m 1,656
I 80 Iowa Poor 1959 69.2 m 1,654
I-80 Iowa Fair 1958 77.4 m 1,654
N FORK MAQUOKETA RIVER Iowa Poor 1967 38.1 m 1,651
FOUR MILE CREEK Iowa Fair 1980 75.6 m 1,651
US 61 Iowa Good 2011 74.7 m 1,650
SMALL NATURAL STREAM Iowa Fair 1949 12.2 m 1,650
DRAINAGE DITCH Iowa Fair 1966 6.3 m 1,650
SMALL CREEK Iowa Fair 1998 34.4 m 1,650
SPRING CREEK Iowa Good 2014 42.9 m 1,650
PIKE RUN CREEK Iowa Fair 1968 37.8 m 1,650
SMALL CREEK Iowa Fair 1998 7.9 m 1,650

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.