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
BOONE RIVER Iowa Good 1990 65.2 m 898
STREAM Iowa Fair 1989 16.8 m 898
BUCK CREEK Iowa Good 1986 38.1 m 894
S FORK IOWA RIVER Iowa Fair 1949 90.8 m 894
US 218 Iowa Good 1996 68.6 m 894
DRAINAGE DITCH Iowa Fair 1956 26.5 m 894
MAQUOKETA RIVER Iowa Good 2008 82.0 m 894
SMALL NATURAL STREAM Iowa Fair 1947 9.4 m 894
TROUT CREEK Iowa Fair 1962 16.5 m 894
UPPER IOWA RIVER Iowa Good 2022 101.8 m 891
WEST FORK CEDAR RIVER Iowa Good 2024 81.9 m 891
MIDDLE BRANCH W 102 RVR Iowa Fair 1924 40.2 m 890
FOX RIVER Iowa Poor 1962 70.1 m 890
MIDDLE BR W 102 RIVER Iowa Fair 1961 48.2 m 890
LANDPHERE CREEK Iowa Poor 1972 31.4 m 890
SMALL NATURAL STREAM Iowa Fair 2001 8.2 m 890
LITTLE MAQUOKETA RIVER Iowa Fair 1983 39.0 m 890
I 35 Iowa Good 2014 94.2 m 890
DRAINAGE Iowa Good 1995 7.9 m 890
CREEK Iowa Good 2001 7.6 m 890
DUTCH CREEK Iowa Fair 1956 7.6 m 890
SMALL STREAM Iowa Fair 1968 6.1 m 888
BIG SIOUX RIVER Iowa Fair 1971 106.1 m 888
JACK CREEK Iowa Good 2007 28.3 m 888
WOLF CREEK Iowa Fair 1975 39.0 m 887
WILLOW CREEK Iowa Fair 1969 48.5 m 887
SMALL STREAM Iowa Good 1994 6.7 m 887
I 380 Iowa Good 2022 89.9 m 885
I 380 Iowa Good 2022 89.9 m 885
ELK CREEK Iowa Fair 1996 7.9 m 884
BUFFALO CREEK Iowa Fair 1965 23.8 m 884
CREEK Iowa Good 2002 7.9 m 884
WAPSIPINICON RIVER Iowa Fair 1966 45.7 m 884
UNAMED CREEK Iowa Good 2004 6.7 m 884
BUFFALO CREEK Iowa Good 1995 9.8 m 884
WILLOW CREEK Iowa Fair 1968 7.6 m 884
PRAIRIE CREEK Iowa Good 2009 7.9 m 880
BR OF ENGLISH CREEK Iowa Poor 1963 31.4 m 880
INDIAN CREEK Iowa Good 1980 59.7 m 880
OVER-FLOW-NORTH RIVER Iowa Poor 1970 23.8 m 880
DES MOINES RIVER Iowa Poor 1957 379.5 m 880
IOWA RIVER Iowa Good 2020 365.5 m 880
LINCOLN ST & OVERFLO Iowa Good 1995 190.5 m 880
MURRAY CREEK Iowa Good 1987 6.7 m 880
CREEK Iowa Good 1953 7.3 m 880
PECHMAN CREEK Iowa Poor 1974 13.1 m 880
LONG BRANCH CREEK Iowa Poor 1967 15.9 m 880
NORTH RIVER Iowa Good 1993 62.2 m 880
STREAM Iowa Fair 1955 10.1 m 880
DRAINAGE DITCH #52 Iowa Poor 1953 9.8 m 880

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.