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
SMALL STREAM Iowa Poor 1932 9.1 m 620
SKUNK RIVER OVERFLOW Iowa Good 2004 39.0 m 620
SKUNK RIVER Iowa Good 2004 189.6 m 620
DRAINAGE DITCH Iowa Fair 1978 7.0 m 620
MUD CREEK Iowa Good 2002 50.9 m 620
N BR OLD MANS CREEK Iowa Good 2023 45.7 m 620
SOLDIER RIVER Iowa Fair 1952 74.1 m 620
CEDAR RIVER Iowa Poor 1948 349.0 m 620
LINDNER CREEK Iowa Poor 1972 10.8 m 620
WILLOW RIVER Iowa Fair 1959 56.1 m 620
NORWAY CREEK Iowa Fair 1959 52.1 m 620
DM RIVER Iowa Good 2010 347.2 m 620
I-80 Iowa Fair 1960 66.4 m 620
MUCHAKINOCK CREEK Iowa Good 2001 43.6 m 620
KIDDER CREEK Iowa Fair 1985 39.0 m 619
IOWA RIVER OVERFLOW Iowa Fair 1972 31.1 m 619
OVER UP RR Iowa Good 1993 66.1 m 619
IOWA RIVER OVERFLOW Iowa Fair 1972 20.7 m 619
IOWA RIVER Iowa Poor 1988 184.1 m 619
BRANCH BEAVER CREEK Iowa Poor 1968 9.8 m 619
OTTER CREEK Iowa Good 1997 54.6 m 619
IMRL RR Iowa Good 2000 45.7 m 619
DRAINAGE DITCH Iowa Fair 1956 7.9 m 619
WEST FORK CEDAR RIVER Iowa Good 2003 95.1 m 619
OVERFLOW TO W FORK CED R Iowa Fair 1985 39.0 m 619
WILLOW CREEK Iowa Fair 1964 23.8 m 619
PINE CREEK Iowa Fair 1973 22.9 m 619
WOLF CREEK Iowa Fair 1973 26.8 m 619
SMALL STREAM Iowa Fair 1985 9.2 m 619
OTTER CREEK Iowa Fair 1962 61.0 m 619
STREAM Iowa Good 1995 27.7 m 619
OTTER CREEK Iowa Fair 1962 61.9 m 619
OTTER CREEK 2ND CHANNEL Iowa Fair 1962 38.1 m 619
BIG BEAR CREEK Iowa Fair 1978 7.6 m 619
SCHNEIDERS CREEK Iowa Fair 1973 22.9 m 619
STREAM Iowa Fair 1920 9.4 m 619
MAPLE RIVER Iowa Good 2002 58.5 m 619
IA 60 Iowa Good 2005 83.8 m 619
DRAINAGE Iowa Fair 1935 6.4 m 619
LITTLE MAQUOKETA RIVER Iowa Good 2021 46.6 m 619
WANATEE CREEK Iowa Fair 1999 21.9 m 618
INDIAN CREEK Iowa Good 1976 10.1 m 617
DRAINAGE Iowa Fair 1989 13.7 m 617
SM STREAM Iowa Fair 1989 23.8 m 616
DRAINAGE Iowa Poor 1960 18.9 m 616
TURKEY RUN Iowa Fair 1994 9.1 m 610
CEDAR FORK Iowa Fair 1964 46.9 m 610
TURKEY RUN Iowa Fair 1983 7.6 m 610
US 30 Iowa Good 2017 77.8 m 610
S COAL CREEK Iowa Fair 1994 31.4 m 610

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.