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
SNYDER CREEK Iowa Fair 1987 39.0 m 381
SOAP CREEK Iowa Fair 1987 65.2 m 380
WILLIAMS CREEK Iowa Fair 1980 38.4 m 380
SMALL STREAM Iowa Good 2013 7.3 m 380
SWEETLAND CREEK Iowa Fair 1948 6.1 m 380
LOWE RUN Iowa Poor 1928 7.6 m 380
SMALL DRY RUN Iowa Poor 1920 16.3 m 380
BR CEDAR CREEK Iowa Good 2012 19.2 m 380
CEDAR CREEK Iowa Good 2014 31.4 m 380
FARMERS CREEK Iowa Fair 1990 6.4 m 380
FARMERS CREEK Iowa Fair 1979 6.4 m 380
N FORK MAQUOKETA RIVER Iowa Good 2024 25.3 m 380
GRAND RIVER Iowa Poor 1940 55.8 m 379
DRAINAGE DITCH Iowa Fair 1960 8.5 m 379
CREEK Iowa Good 1977 7.6 m 379
DRAINAGE DITCH Iowa Fair 1955 6.4 m 379
OVERFLW OF PILOT CREEK Iowa Fair 1995 8.5 m 379
WRIGHT CREEK Iowa Fair 1968 39.0 m 379
WELDON RIVER Iowa Poor 1958 77.4 m 379
CALEB CREEK Iowa Fair 1977 43.3 m 379
CREEK Iowa Poor 1962 6.4 m 379
SIX MILE CREEK Iowa Good 1971 46.3 m 379
S LIZARD CK DD #22 Iowa Good 2000 31.4 m 379
DEER CREEK Iowa Poor 1968 23.5 m 379
PILOT CREEK Iowa Fair 1969 31.4 m 379
DRAINAGE DITCH Iowa Good 2006 36.0 m 379
BIG CEDAR CK DD #41 Iowa Poor 1969 9.8 m 379
DRAINAGE DITCH 9-13 Iowa Poor 1970 13.7 m 379
STREAM Iowa Fair 2005 7.6 m 379
WATERWAY Iowa Poor 1900 7.6 m 379
CREEK Iowa Fair 1966 17.4 m 379
UNNAMED STREAM Iowa Poor 1961 23.8 m 379
SMALL Iowa Poor 1900 6.4 m 379
THREE MILE CREEK Iowa Good 2003 11.0 m 379
PLATTE RIVER Iowa Fair 1969 62.2 m 379
FIELD STREAM Iowa Fair 1985 28.0 m 379
UNNAMED CREEK Iowa Poor 1961 23.5 m 379
WILLOW CREEK Iowa Fair 1990 39.0 m 379
WILLOW CREEK Iowa Fair 1970 32.0 m 379
RACCOON RIVER Iowa Good 2017 108.1 m 379
ALLEN CREEK Iowa Good 2021 28.3 m 379
HARRIS GROVE CREEK Iowa Fair 1900 8.8 m 379
BROWN CREEK (DD#121) Iowa Fair 1971 23.8 m 379
BREWER CREEK Iowa Fair 1920 13.7 m 377
RAILROAD CREEK Iowa Poor 1900 13.1 m 377
SO BR RALSTON CREEK Iowa Fair 1997 8.2 m 377
BLACKHAWK CREEK Iowa Fair 1985 21.0 m 377
THOMAS DITCH Iowa Fair 1957 13.4 m 377
LINDNER CREEK Iowa Poor 1969 23.9 m 376
I-80 Iowa Fair 1959 67.1 m 374

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.