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
KLONDIKE CREEK Iowa Poor 1966 30.5 m 309
W FK W NISHNABOTNA RIVER Iowa Good 1996 58.5 m 309
JOHNS CREEK Iowa Good 1977 53.3 m 309
KING CREEK Iowa Good 2007 7.9 m 309
SMALL STREAM Iowa Good 2012 7.6 m 309
WEST BRANCH 102 RIVER Iowa Poor 1936 45.7 m 309
EAST NODAWAY RIVER Iowa Good 2009 66.1 m 309
DD 63 Iowa Good 2014 25.5 m 309
WEST 102 RIVER Iowa Poor 1985 43.3 m 309
WATERMAN CREEK Iowa Good 1965 6.7 m 309
WATERMAN CREEK Iowa Fair 1977 11.3 m 309
NO LIZARD CK DD #77 Iowa Good 2005 27.7 m 309
DD 84 Iowa Good 2006 23.8 m 309
REYNOLDS CREEK Iowa Good 1986 50.9 m 309
DD84 Iowa Good 2021 31.4 m 309
DD 84 Iowa Good 2006 24.4 m 309
PLESSIS CREEK Iowa Good 1964 11.0 m 309
IA 9 Iowa Fair 1969 65.2 m 309
LITTLE SIOUX RIVER Iowa Good 2018 62.2 m 309
DRAINAGE Iowa Good 2003 8.2 m 306
DRAINAGE DITCH Iowa Poor 1994 23.8 m 305
BOONE RIVER Iowa Good 2012 58.5 m 305
BEAVER CREEK Iowa Fair 1961 7.3 m 304
SKUNK RIVER TRIBUTARY Iowa Good 2017 7.3 m 304
BRANCH OF RICHLAND CREEK Iowa Fair 2002 16.5 m 304
CARSON CREEK Iowa Good 2005 7.0 m 304
SMALL STREAM Iowa Good 2015 11.9 m 304
BRANCH BURNETTE CREEK Iowa Poor 1984 27.4 m 304
CANOE CREEK Iowa Good 1992 23.8 m 304
BURNETT CREEK Iowa Good 1994 34.4 m 304
SMALL STREAM Iowa Good 2005 7.3 m 304
ROBERTS CREEK Iowa Good 1991 62.2 m 304
DUTCH CREEK Iowa Good 1995 9.8 m 304
UNAMED CR Iowa Good 1988 10.5 m 304
BRANCH OF RICHLAND CREEK Iowa Poor 1967 23.8 m 304
MORGAN CREEK Iowa Good 2016 48.3 m 304
LITTLE MAQUOKETA RIVER Iowa Good 2004 68.9 m 304
KILSON CREEK Iowa Good 2005 8.8 m 304
EAST BOYER RIVER Iowa Poor 1913 15.9 m 303
DRAINAGE DITCH 150-86 Iowa Good 2017 21.3 m 303
TARKIO RIVER Iowa Fair 1977 84.1 m 303
TURKEY CREEK Iowa Fair 1963 23.8 m 300
LITTLE SOAP CREEK Iowa Good 2011 37.8 m 300
WEST TARKIO CREEK Iowa Fair 1979 99.1 m 300
INDIAN CREEK Iowa Good 2020 75.0 m 300
CLEAR CREEK Iowa Good 2022 66.1 m 300
W HOOSIER CR Iowa Fair 1977 8.2 m 300
DD #8 Iowa Good 2017 7.9 m 300
LITTLE WATERMAN CREEK Iowa Fair 1955 7.4 m 300
WEST BEAVER CREEK Iowa Poor 1921 7.9 m 300

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.