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
UP RR Iowa Good 2019 87.4 m 2,200
BLACKHAWK CREEK Iowa Fair 1990 30.5 m 2,197
IA 1 Iowa Good 2007 61.3 m 2,195
US 71 SB & IA 471 Iowa Good 2012 69.0 m 2,195
IA 1 Iowa Good 2007 61.3 m 2,195
MOSQUITO CREEK Iowa Fair 1963 62.2 m 2,195
US 71 SB & IA 471 Iowa Good 2012 69.0 m 2,195
CEDAR RIVER Iowa Poor 1979 208.8 m 2,193
WINNEBAGO RIVER Iowa Poor 1963 39.0 m 2,192
BADGER CREEK Iowa Good 2007 17.7 m 2,190
SOUTH RIVER Iowa Fair 1983 78.0 m 2,190
BLOWERS CREEK Iowa Good 1978 14.3 m 2,186
US 20 Iowa Fair 1974 86.9 m 2,180
STREAM Iowa Good 1988 7.3 m 2,180
TURKEY RIVER Iowa Fair 1969 108.2 m 2,180
LONG DICK CREEK Iowa Fair 1937 7.0 m 2,180
NORTH SKUNK RIVER Iowa Fair 1924 128.6 m 2,180
IAIS RR Iowa Fair 1952 57.6 m 2,180
ROCK CREEK Iowa Fair 1980 40.5 m 2,180
RALSTON CREEK Iowa Poor 1911 6.4 m 2,176
MISSOURI RIVER (TOLL) Iowa Fair 1952 600.2 m 2,174
MIDDLE RACOON RIVER Iowa Good 2005 40.5 m 2,170
OVER UP RR Iowa Fair 1990 100.0 m 2,170
16TH AVE ACCESS Iowa Good 2017 55.5 m 2,170
16TH AVE ACCESS RD Iowa Good 2017 55.5 m 2,170
SHADDUCKS CREEK Iowa Fair 1967 42.1 m 2,170
SHADDUCKS CREEK Iowa Good 1977 17.7 m 2,170
STREAM Iowa Fair 1928 6.4 m 2,170
UP RR Iowa Fair 1985 46.6 m 2,170
STREAM Iowa Good 1972 7.9 m 2,170
IA 1 Iowa Good 2019 60.0 m 2,165
IA 1 Iowa Good 2019 60.0 m 2,165
SHELL ROCK RIVER Iowa Fair 1921 37.5 m 2,160
JACKSON CREEK Iowa Fair 1962 54.9 m 2,160
STREAM Iowa Good 1975 22.3 m 2,160
DRY RUN CREEK Iowa Good 2004 9.8 m 2,160
MOSQUITO CREEK Iowa Good 1996 60.4 m 2,160
US 34 Iowa Fair 1960 51.8 m 2,160
DRAINAGE DITCH Iowa Fair 1964 65.2 m 2,160
LITTLE SIOUX RIVER Iowa Fair 1959 74.4 m 2,160
I-80 Iowa Fair 1958 67.7 m 2,158
STREAM Iowa Fair 1957 6.4 m 2,150
TWO MILE CREEK Iowa Good 1984 34.4 m 2,150
ELK RUN CREEK Iowa Fair 1925 8.8 m 2,150
CC RR Iowa Good 2013 113.7 m 2,150
MISSISSIPPI RIVER Iowa Good 2017 748.0 m 2,150
MISSISSIPPI R OVERFLOW Iowa Good 2018 116.2 m 2,150
BEE BRANCH Iowa Fair 2011 29.0 m 2,147
FLOYD RIVER Iowa Fair 1962 110.9 m 2,144
IA 100 Iowa Good 2018 74.7 m 2,141

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.