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
BR SPRING CREEK Iowa Fair 1978 7.6 m 1,885
WINNEBAGO RIVER Iowa Fair 1974 47.9 m 1,884
450TH STREET Iowa Good 2003 51.5 m 1,880
450TH STREET Iowa Good 2002 51.5 m 1,880
DRAINAGE DITCH Iowa Fair 1925 16.5 m 1,880
STREAM Iowa Good 1928 6.4 m 1,880
SOUTH RACCOON RIVER Iowa Good 1977 49.7 m 1,880
CEDAR CREEK Iowa Fair 1948 37.2 m 1,880
GERMAN CREEK Iowa Fair 1967 39.9 m 1,880
CREEK Iowa Good 1990 8.2 m 1,880
CCP RAILROAD Iowa Good 2023 47.0 m 1,876
DD #1 Iowa Good 2018 24.1 m 1,875
MAPLE RIVER Iowa Fair 1984 73.5 m 1,870
SHELLROCK RIVER Iowa Poor 1950 37.8 m 1,868
CEDAR RIVER Iowa Fair 1961 315.8 m 1,866
MCKINLEY LAKE Iowa Good 2017 21.3 m 1,864
DRY CREEK Iowa Good 1985 31.4 m 1,860
CEDAR RIVER Iowa Poor 1966 252.1 m 1,860
STREAM Iowa Good 1979 10.1 m 1,860
BIG BEAR CREEK Iowa Good 1978 31.4 m 1,860
US 30 Iowa Good 2023 73.2 m 1,860
IOWA RIVER Iowa Good 2023 51.2 m 1,858
DRAINAGE Iowa Fair 1985 8.5 m 1,856
MOSQUITO CREEK Iowa Good 1977 40.7 m 1,850
IA 141 Iowa Fair 1997 75.0 m 1,850
WILLOW CREEK Iowa Good 2008 11.9 m 1,850
WEST INDIAN CREEK Iowa Fair 1964 75.0 m 1,850
OVER UP RR Iowa Poor 1935 44.5 m 1,846
US 34 Iowa Fair 1971 67.4 m 1,846
I-35 Iowa Fair 1966 66.4 m 1,845
CEDAR CREEK Iowa Fair 1964 55.8 m 1,840
ENGLISH CREEK Iowa Fair 1987 7.3 m 1,840
DRAINAGE Iowa Good 1986 22.9 m 1,838
DRAINAGE DITCH Iowa Fair 1950 19.8 m 1,836
DRAINAGE DITCH Iowa Fair 1936 6.4 m 1,830
DRY CREEK Iowa Fair 1955 47.2 m 1,828
7TH WARD DITCH Iowa Good 1996 7.9 m 1,823
N WALNUT CREEK Iowa Fair 1991 22.9 m 1,821
ROCK CREEK Iowa Fair 1981 6.7 m 1,820
FISHERS CREEK Iowa Good 1985 44.5 m 1,820
HONEY CREEK Iowa Good 2008 47.0 m 1,820
NO NAME CREEK Iowa Fair 1986 38.1 m 1,820
STREAM Iowa Fair 1988 7.6 m 1,820
NORTH SKUNK RIVER Iowa Good 1988 60.0 m 1,820
NORTH CREEK Iowa Good 2013 7.3 m 1,820
BIG BEAR CREEK Iowa Fair 1978 44.5 m 1,820
WALNUT CREEK Iowa Good 1978 39.3 m 1,820
STREAM Iowa Fair 1937 6.7 m 1,820
BOYER RIVER Iowa Fair 1967 51.8 m 1,820
US 52 Iowa Good 2017 111.3 m 1,817

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.