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
150TH ST Iowa Good 2001 35.9 m 4,450
LITTLE SILVER CREEK Iowa Good 2015 72.0 m 4,450
AVE G Iowa Good 2023 74.0 m 4,450
CO RD B35 Iowa Good 1998 57.3 m 4,450
CC RR Iowa Good 2011 66.1 m 4,450
CERRO GORDO COUNTY TRAIL Iowa Good 1997 53.0 m 4,450
KEG CREEK Iowa Good 2008 60.0 m 4,450
UPRR Iowa Good 1997 66.4 m 4,450
I&M RR Iowa Good 1999 66.8 m 4,450
2ND AVE Iowa Good 2023 60.1 m 4,450
CO RD S-27 Iowa Good 1990 53.6 m 4,450
CERRO GORDO COUNTY TRAIL Iowa Fair 1997 53.0 m 4,450
WEST BROADWAY Iowa Good 2023 72.3 m 4,450
WEST BROADWAY Iowa Good 2023 72.3 m 4,450
LIZARD CREEK Iowa Good 2011 139.9 m 4,450
FRENCH CREEK Iowa Fair 1982 22.3 m 4,439
FLOYD RIVER Iowa Poor 1962 106.4 m 4,432
BRANCH SMITH CREEK Iowa Fair 1927 11.0 m 4,430
SMITH CREEK Iowa Fair 1976 10.1 m 4,430
BOYER RIVER Iowa Good 2016 86.2 m 4,430
DRAINAGE DITCH Iowa Fair 1985 37.5 m 4,420
HONEY CREEK Iowa Good 1997 54.6 m 4,420
RED CEDAR RIVER Iowa Fair 1984 168.9 m 4,419
I-35 Iowa Fair 1972 89.0 m 4,419
MUD LAKE Iowa Fair 1984 110.9 m 4,419
ROCK CREEK Iowa Fair 1973 31.4 m 4,410
WEST WAPSINONOC CREEK Iowa Good 2013 54.7 m 4,410
MISSOURI RIVER Iowa Fair 1991 604.4 m 4,410
YOUNGS DITCH Iowa Fair 1953 59.7 m 4,410
WILSON DITCH Iowa Good 2023 6.9 m 4,410
I-380 Iowa Fair 1972 81.7 m 4,410
IA 14 Iowa Fair 2000 63.4 m 4,400
IA 14 Iowa Good 2000 63.4 m 4,400
MOON CREEK Iowa Fair 1972 40.8 m 4,400
CC RR Iowa Good 2010 66.1 m 4,400
W BRANCH OF KITTY CREEK Iowa Good 2003 75.6 m 4,400
DEEP CREEK Iowa Good 1996 31.4 m 4,400
DES MOINES RIVER Iowa Fair 1963 200.9 m 4,400
BNSF RR Iowa Good 2001 63.1 m 4,400
DEEP CREEK Iowa Good 1996 31.4 m 4,400
OVER UP RR Iowa Fair 1962 65.5 m 4,400
EAST BOYER RIVER Iowa Fair 1962 65.5 m 4,400
OVER CC RR Iowa Fair 1967 114.3 m 4,400
BOYER RIVER Iowa Fair 1967 88.7 m 4,400
MAQUOKETA RIVER Iowa Good 2003 327.1 m 4,400
LIZARD CREEK Iowa Good 2010 139.9 m 4,400
W BRANCH OF KITTY CREEK Iowa Good 2003 75.6 m 4,400
BNSF RR Iowa Good 2001 63.4 m 4,400
LITTLE BEAVER CREEK Iowa Good 1997 40.5 m 4,400
I-80 Iowa Fair 1963 68.6 m 4,390

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.