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
CCP RR & BNSF RR & RAMP Iowa Fair 1999 230.7 m 5,200
DRAINAGE DITCH Iowa Fair 1976 9.8 m 5,200
CCP RR & BNSF RR & BUS 7 Iowa Fair 1999 261.2 m 5,200
BRANCH MAQUOKETA RIVER Iowa Good 1975 11.6 m 5,200
STREAM Iowa Fair 1975 11.6 m 5,200
BLOWERS CREEK Iowa Good 1991 61.3 m 5,195
CEDAR RIVER Iowa Fair 1984 214.3 m 5,195
CREEK Iowa Fair 1980 7.9 m 5,181
US 30 Iowa Fair 1994 62.5 m 5,164
OVER CIC RR Iowa Fair 1979 31.1 m 5,126
I-80 Iowa Fair 1966 69.2 m 5,116
I-80 & US-65 Iowa Fair 2013 94.2 m 5,106
CRANE CREEK Iowa Fair 1977 28.3 m 5,106
DRAINAGE DITCH Iowa Fair 1935 11.6 m 5,100
S FORK MAQUOKETA RIVER Iowa Fair 1967 114.0 m 5,100
OVERFLOW Iowa Good 1995 150.3 m 5,100
DRAINAGE Iowa Good 2004 11.6 m 5,100
MAPLE RIVER OVERFLOW Iowa Good 2016 11.5 m 5,100
MISSISSIPPI BLVD Iowa Good 2019 42.9 m 5,100
RAMP B TO IA AVE Iowa Good 1996 70.1 m 5,100
HAZELTON CREEK Iowa Good 1986 40.5 m 5,100
STREAM Iowa Good 1959 11.3 m 5,100
MIDDLE RACCOON RIVER Iowa Good 1985 58.2 m 5,100
SKUNK RIVER Iowa Good 1995 209.4 m 5,100
IOWA RIVER Iowa Good 2015 171.3 m 5,100
TRIB TO WAPSIPINICON Iowa Good 2001 10.7 m 5,100
S FORK MAQUOKET RIVER Iowa Fair 1998 123.7 m 5,100
FLOYD RIVER Iowa Fair 1992 63.7 m 5,100
WAPSIPINICON RIVER Iowa Fair 1982 142.6 m 5,100
WAPSIPINICON OVERFLOW Iowa Fair 1982 80.5 m 5,100
WAPSIPINICON OVERFLOW Iowa Fair 1983 94.8 m 5,100
FRONTAGE WB BROADWAY Iowa Good 2023 292.6 m 5,100
SKUNK RIVER Iowa Fair 1970 210.3 m 5,100
I-380 Iowa Fair 1975 78.6 m 5,100
STREAM Iowa Good 1974 28.7 m 5,100
LITTLE MAQUOKETA RIVER Iowa Fair 1947 74.1 m 5,100
HEWITT CREEK Iowa Good 1985 48.2 m 5,100
CPRR Iowa Good 1998 83.8 m 5,100
DES MOINES RVR RR & RD Iowa Fair 1994 396.9 m 5,100
OAKS AVE Iowa Good 1996 58.2 m 5,100
DRAINAGE Iowa Fair 1962 8.2 m 5,095
ABANDONED RR Iowa Fair 1976 54.6 m 5,095
PERRY CREEK Iowa Good 1900 47.9 m 5,086
CRESENT CREEK Iowa Fair 2004 7.3 m 5,086
I 80 & I 35 Iowa Good 2017 273.9 m 5,079
BOONE RIVER/REC TRAIL Iowa Fair 1974 99.1 m 5,050
SPRING CREEK Iowa Good 1995 46.9 m 5,050
BOONE RIVER Iowa Fair 1974 99.1 m 5,050
I-29 Iowa Good 1977 79.6 m 5,050
SPRING CREEK Iowa Good 1956 46.2 m 5,050

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.