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
I-35 Iowa Fair 1964 67.7 m 1,148
SMALL STREAM Iowa Fair 1984 9.4 m 1,147
S.BR.CROOKED CREEK Iowa Fair 1950 13.7 m 1,147
STORM CREEK Iowa Good 1984 31.1 m 1,146
RACCOON RIVER Iowa Fair 1925 75.0 m 1,146
MONKEY RUN Iowa Fair 1935 15.2 m 1,140
DRAINAGE Iowa Good 2006 6.7 m 1,140
WAPSIPINICON RIVER Iowa Fair 1961 199.0 m 1,140
LITTLE CEDAR CREEK Iowa Good 1988 28.3 m 1,140
HESS RD Iowa Fair 1983 58.2 m 1,140
WAPSIPINICON RIVER OVFLW Iowa Fair 1977 48.5 m 1,140
WAPSIPINICON RIVER Iowa Fair 1977 108.2 m 1,140
US 63 Iowa Good 1997 87.8 m 1,140
GRAYBILL CREEK Iowa Good 1991 39.0 m 1,140
US 30 Iowa Fair 1975 72.5 m 1,140
EAST JORDAN CREEK Iowa Good 1991 6.7 m 1,140
SMALL NATURAL CREEK Iowa Fair 1949 11.0 m 1,139
ELK CREEK Iowa Fair 1926 7.9 m 1,139
CREEK Iowa Fair 1998 18.3 m 1,138
SMALL Iowa Fair 2006 11.3 m 1,137
MIDDLE RIVER Iowa Good 2011 93.3 m 1,136
NORTH SKUNK RIVER Iowa Good 1999 100.9 m 1,130
BUCKLEY CREEK(MIDDLE BR) Iowa Good 1984 35.4 m 1,130
E BR BUCKLEY CREEK Iowa Fair 1983 8.8 m 1,130
BIG INDIAN CREEK Iowa Fair 1969 54.3 m 1,130
BONE RUN CREEK Iowa Fair 1969 6.4 m 1,130
FOX RIVER Iowa Fair 1969 77.1 m 1,130
LITTLE CREEK Iowa Fair 1967 8.8 m 1,130
EAST 102 RIVER Iowa Fair 1978 46.6 m 1,130
DICKERSONS BRANCH Iowa Fair 1928 16.2 m 1,130
CLEAR CREEK Iowa Fair 1964 9.8 m 1,130
SIX MILE CREEK Iowa Good 2013 78.3 m 1,130
BEAVER CREEK Iowa Fair 1975 40.8 m 1,130
DRAINAGE Iowa Good 1954 6.4 m 1,130
DRY RUN Iowa Fair 1969 31.4 m 1,130
BRUSH BRANCH Iowa Good 1966 6.4 m 1,130
MILL CREEK Iowa Good 1969 44.5 m 1,130
INDIAN CREEK Iowa Good 2021 66.2 m 1,130
MIDDLE RIVER Iowa Fair 1967 65.2 m 1,130
INDIAN CREEK Iowa Poor 2002 29.6 m 1,129
DRY RUN CREEK Iowa Good 2010 7.6 m 1,129
TRIB INDIAN CREEK Iowa Fair 1999 14.9 m 1,129
WEST OTTER CREEK Iowa Fair 1938 10.4 m 1,127
IA 5 Iowa Good 2000 118.6 m 1,127
CUMMINS CREEK Iowa Good 2010 24.4 m 1,127
TRIB TO BUFFALO CREEK Iowa Good 2024 6.7 m 1,121
BIG SIOUX RIVER Iowa Fair 1996 149.3 m 1,121
LITTLE SIOUX RIVER Iowa Fair 1973 129.5 m 1,120
LAKE CHANNEL Iowa Good 2010 34.4 m 1,120
SMALL STREAM Iowa Good 1992 6.1 m 1,120

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.