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 DITCH Iowa Good 2006 39.0 m 2,690
DRAINAGE DITCH Iowa Good 1960 7.1 m 2,690
WEST NISHNABOTNA RIVER Iowa Fair 1984 85.6 m 2,690
TRIB TO ELK RUN CREEK Iowa Good 1992 8.7 m 2,687
COX CREEK Iowa Fair 1978 39.6 m 2,680
COX CREEK Iowa Fair 1978 47.2 m 2,680
VOLGA RIVER Iowa Fair 1978 95.4 m 2,680
DRY RUN CREEK Iowa Good 1978 23.8 m 2,680
EAST NODAWAY RIVER Iowa Fair 1975 61.3 m 2,680
VIRDEN CREEK Iowa Fair 1970 7.6 m 2,679
DRY RUN CREEK Iowa Poor 1905 13.4 m 2,673
DRAINAGE DITCH Iowa Fair 1953 8.2 m 2,671
DRAINAGE DITCH Iowa Poor 1953 7.6 m 2,671
SMALL NATURAL STREAM Iowa Poor 1954 28.0 m 2,671
I-380 Iowa Fair 1982 81.7 m 2,670
LITTLE WAPSIPINICON RVR Iowa Fair 1954 43.3 m 2,670
US 20 Iowa Fair 1984 89.9 m 2,670
ALEXANDER CREEK Iowa Fair 1959 9.8 m 2,660
GOSHEN DITCH Iowa Good 2007 27.4 m 2,660
WAPSINONOC CREEK Iowa Fair 1988 52.4 m 2,660
FOUR MILE CREEK Iowa Good 1972 27.7 m 2,659
MCCLOUD RUN Iowa Fair 1980 20.7 m 2,650
FLOYD RIVER Iowa Good 2004 92.4 m 2,650
FLOYD RIVER Iowa Good 2004 93.6 m 2,650
US 63 Iowa Fair 2006 91.4 m 2,650
WEST TARKIO RIVER Iowa Good 1991 52.1 m 2,650
PONY CREEK Iowa Good 1995 6.4 m 2,649
LITTLE BEAR CREEK Iowa Good 2002 43.3 m 2,648
OVER IAIS RR Iowa Good 2002 56.1 m 2,648
DRAINAGE DITCH Iowa Poor 1953 7.3 m 2,642
DD Iowa Good 1994 27.7 m 2,641
MIDDLE RIVER Iowa Good 2015 84.4 m 2,641
CP RR/MILL CREEK Iowa Good 2009 200.3 m 2,640
ENGLISH CREEK Iowa Poor 1975 62.5 m 2,640
ABANDONED RR Iowa Fair 1978 86.6 m 2,633
I80 US 6 I29 & BNSF IIR Iowa Good 2017 1,121.1 m 2,630
LEE TOWN CREEKWAY Iowa Good 2010 12.2 m 2,628
NORTH WALNUT CREEK Iowa Fair 2011 7.8 m 2,628
JOHNSON CREEK Iowa Poor 1933 10.7 m 2,628
SUGAR CREEK Iowa Good 2017 62.2 m 2,628
SUGAR CREEK Iowa Poor 1933 7.9 m 2,628
JOHNSON CREEK Iowa Good 2022 61.3 m 2,628
LITTLE SIOUX RIVER Iowa Good 1991 97.2 m 2,623
SNYDER CREEK Iowa Fair 1964 20.7 m 2,620
BNSF RR AND STREAM Iowa Poor 1964 75.0 m 2,620
STREAM Iowa Good 2005 22.3 m 2,620
ROCK RIVER Iowa Fair 1975 100.3 m 2,620
I 35 & I 80 Iowa Good 2016 101.6 m 2,620
I-235 Iowa Good 2002 92.1 m 2,619
CHESALEA CREEK Iowa Fair 1955 8.5 m 2,617

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.