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
GRANGER CREEK Iowa Fair 1975 27.7 m 480
S WYACONDAH DITCH Iowa Poor 1968 46.0 m 480
RED OAK CREEK Iowa Fair 1971 30.5 m 479
DRAINAGE Iowa Poor 1968 17.7 m 479
BLUFF CREEK Iowa Fair 1956 21.6 m 478
BOONE RIVER Iowa Fair 1939 90.2 m 478
CREEK Iowa Good 2001 7.3 m 478
CREEK Iowa Poor 1947 9.1 m 478
WILLOW CREEK Iowa Good 2010 10.1 m 478
DD #61 Iowa Good 2016 25.3 m 478
DM RIVER Iowa Good 2001 74.1 m 478
DRAINAGE DITCH 1&2 Iowa Fair 1974 9.4 m 478
CAMP CREEK TRIBUTARY Iowa Good 1993 10.7 m 477
DRAINAGE DITCH Iowa Good 1992 8.2 m 477
TWELVE MILE CREEK Iowa Good 2010 30.8 m 477
NISHNABOTNA RIVER Iowa Poor 1949 111.3 m 477
BRUSHY FORK CREEK Iowa Good 2008 37.5 m 477
HALBUR CR TRIB TO BRUSHY Iowa Good 2010 21.6 m 477
WATERWAY Iowa Good 2019 50.9 m 477
CLANTON CREEK Iowa Poor 1932 6.1 m 477
TOM CREEK Iowa Poor 1954 38.7 m 477
HOWERDON CREEK Iowa Poor 1954 37.2 m 477
KEG CREEK Iowa Fair 1960 46.3 m 477
NORTH RIVER Iowa Fair 1949 66.1 m 477
MANSON BRANCH Iowa Good 1989 16.8 m 477
DRAINAGE Iowa Poor 1900 8.8 m 472
RAILROAD CREEK Iowa Poor 1900 10.4 m 472
VINTON DITCH Iowa Fair 1979 12.2 m 472
BLACKHAWK CREEK Iowa Good 1984 20.4 m 472
VOLGA RIVER Iowa Fair 1961 31.2 m 471
ROCK CREEK Iowa Fair 2005 27.4 m 471
UPPER IOWA RIVER Iowa Good 2005 92.7 m 471
RICHLAND CREEK Iowa Good 1994 38.7 m 471
RAVEN CREEK Iowa Good 2000 39.0 m 471
VOLGA RIVER Iowa Fair 1950 55.8 m 471
US 20 Iowa Fair 1978 116.1 m 471
MILLER CREEK Iowa Good 1988 7.3 m 471
EAST OTTER CREEK Iowa Good 1999 31.4 m 471
HUNTER CREEK Iowa Poor 1950 10.7 m 471
I-35 Iowa Fair 1972 96.9 m 471
SHELLROCK RIVER Iowa Fair 1955 54.6 m 471
BR VOLGA RIVER Iowa Good 2007 12.2 m 471
CREEK Iowa Good 2018 9.8 m 471
CREEK Iowa Fair 1957 17.4 m 471
SMALL STREAM Iowa Good 2013 13.1 m 470
S-W CONN OVER EB I-880 Iowa Fair 1966 43.6 m 470
CREEK Iowa Fair 1963 6.7 m 470
MC CLURE CREEK Iowa Poor 1970 31.1 m 470
BRANCH OF BEAR CREEK Iowa Good 2009 28.3 m 470
NORTH AVERY CREEK Iowa Fair 1981 62.2 m 470

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.