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
DRAINAGE Iowa Good 1999 57.3 m 4,080
DES MOINES RIVER Iowa Good 2010 211.8 m 4,079
I-35 Iowa Fair 1965 66.4 m 4,079
I-35 Iowa Fair 1967 68.0 m 4,079
BNSF RR Iowa Fair 1996 51.8 m 4,062
ORANGE CITY SLOUGH Iowa Fair 1977 23.8 m 4,060
INDIAN CREEK Iowa Poor 1930 13.7 m 4,059
FARMERS CREEK Iowa Good 1996 48.2 m 4,050
N FORK MAQUOKETA RIVER Iowa Good 1996 112.2 m 4,050
FARMERS CREEK Iowa Good 1998 48.5 m 4,050
N FORK MAQUOKETA RIVER Iowa Fair 1967 111.3 m 4,050
FARMERS CREEK Iowa Fair 1966 48.2 m 4,050
FARMERS CREEK Iowa Good 1966 48.2 m 4,050
TARECOD CREEK Iowa Fair 1967 40.2 m 4,050
TARE COD CREEK Iowa Good 1996 40.8 m 4,050
LAKE CHANNEL Iowa Good 2006 46.6 m 4,040
SPRING CREEK Iowa Good 2020 68.9 m 4,040
I-235 Iowa Good 2003 62.5 m 4,037
I-235 Iowa Good 2003 62.5 m 4,037
SHELL ROCK RIVER Iowa Fair 2008 93.9 m 4,036
CRABAPPLE CREEK Iowa Fair 1964 37.5 m 4,030
INDIAN CREEK Iowa Fair 1964 38.7 m 4,030
I-80 Iowa Fair 1959 67.1 m 4,023
MUDDY CREEK Iowa Good 2009 14.6 m 4,020
MUDDY CREEK Iowa Good 2012 14.6 m 4,020
WHITE FOX CREEK Iowa Good 1986 25.3 m 4,020
SINK CREEK Iowa Good 1997 11.9 m 4,016
INDIAN CREEK CONDUIT Iowa Good 1981 9.1 m 4,012
BLACKHAWK CREEK Iowa Poor 1950 14.3 m 4,004
BOUNDRY AVE Iowa Good 2003 37.5 m 4,000
BOUNDRY AVE Iowa Good 2003 37.5 m 4,000
DMC HWY 34 & BNSF RR Iowa Good 2004 160.0 m 4,000
PRAIRIE GROVE RD Iowa Good 2002 35.7 m 4,000
HORSE CREEK Iowa Fair 1987 37.5 m 4,000
DRAINAGE DITCH Iowa Fair 1965 27.7 m 4,000
HORSE CREEK Iowa Fair 1969 37.5 m 4,000
PRARIE GROVE RD Iowa Good 2002 35.7 m 4,000
IOWA 38 Iowa Good 2002 71.0 m 4,000
DMC HWY 34 & BNSF RR Iowa Good 2004 172.5 m 4,000
SPRING CREEK Iowa Fair 1990 14.0 m 3,999
DODGE CREEK Iowa Fair 1974 34.4 m 3,990
WEST TARKIO CREEK Iowa Fair 1964 6.4 m 3,990
BEAVER CREEK Iowa Fair 1988 82.6 m 3,990
N FORK MAQUOKETA RIVER Iowa Fair 1985 54.9 m 3,990
TARKIO RIVER Iowa Fair 1964 38.7 m 3,990
INDIAN CREEK Iowa Fair 1948 45.7 m 3,980
2ND ST NE Iowa Fair 1979 150.3 m 3,980
KEG CREEK Iowa Fair 1960 126.8 m 3,979
SMALL STREAM Iowa Fair 1960 9.1 m 3,979
SMALL NATURAL STREAM Iowa Good 2021 7.6 m 3,970

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.