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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.

Clear
BridgeLocationConditionYear BuiltLengthADT
WALNUT CREEK/BIKE PATH Iowa Good 1998 54.3 m 15,650
OLD UP RR & SW 22ND Iowa Poor 1936 73.5 m 15,634
SOUTH SKUNK RIVER Iowa Fair 1963 99.1 m 15,600
I 235 Iowa Fair 1966 67.7 m 15,600
BIG SIOUX RIVER Iowa Good 1990 169.8 m 15,600
FRANKLIN AVE Iowa Fair 1968 48.8 m 15,550
MCPHERSON AVE Iowa Fair 1967 56.7 m 15,550
MCPHERSON AVE Iowa Fair 1967 56.7 m 15,550
BNSF RR RD & CREEK Iowa Fair 1968 185.3 m 15,550
FRANKLIN AVE Iowa Fair 1968 48.8 m 15,550
DUCK CREEK Iowa Good 1996 40.5 m 15,500
PHEASANT CREEK Iowa Good 1990 7.0 m 15,462
FLOYD RIVER Iowa Fair 2015 199.7 m 15,400
FLOYD BLVD Iowa Fair 2018 69.2 m 15,400
MIDDLE RD Iowa Fair 1963 44.2 m 15,400
FLOYD BLVD Iowa Good 2019 69.3 m 15,400
STREAM Iowa Fair 1991 7.0 m 15,400
IOWAY CREEK (STANGE) Iowa Good 1965 71.0 m 15,397
I-35 Iowa Good 2002 205.7 m 15,300
DUCK CREEK Iowa Poor 1900 29.6 m 15,300
STREAM Iowa Fair 1974 6.4 m 15,300
210TH ST Iowa Fair 1981 80.2 m 15,250
BEAR CREEK Iowa Fair 1967 104.5 m 15,250
I-35 Iowa Fair 1966 71.3 m 15,200
BIKE PATH & TRAIL Iowa Fair 1971 66.8 m 15,200
I-35 Iowa Good 2001 56.1 m 15,163
YEADER CREEK Iowa Good 2004 27.4 m 15,163
I 35/80 IA 141 & RR Iowa Good 2019 727.1 m 15,100
DRAINAGE DITCH NO.48 Iowa Good 1974 7.9 m 15,100
DRY RUN CREEK Iowa Good 1994 10.4 m 15,100
LONG DICK CREEK Iowa Fair 1967 59.4 m 15,050
8TH STREET Iowa Good 2002 56.4 m 15,050
8TH STREET Iowa Good 2002 56.4 m 15,050
9TH AVE Iowa Good 2023 32.9 m 15,000
9TH AVE Iowa Good 2023 32.9 m 15,000
US 30 Iowa Fair 1964 71.6 m 15,000
SUGAR CREEK Iowa Fair 1962 48.5 m 15,000
CIC RR Iowa Fair 1979 93.0 m 15,000
RALSTON CREEK S. BRANCH Iowa Good 1997 11.3 m 14,992
US 169 Iowa Fair 1966 65.5 m 14,950
US 6/169 Iowa Fair 1966 65.5 m 14,950
TROUT CREEK Iowa Fair 1969 62.2 m 14,900
STREAM Iowa Good 2019 7.6 m 14,900
STREAM Iowa Good 2019 7.6 m 14,900
WHISKEY RUN CREEK Iowa Fair 1984 7.0 m 14,900
STREAM Iowa Good 2019 7.6 m 14,900
STREAM Iowa Fair 1984 8.8 m 14,900
STREAM Iowa Good 2019 7.6 m 14,900
UP RR Iowa Good 2016 43.6 m 14,883
NS RR Iowa Good 2016 43.6 m 14,883

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.