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
BNRR Iowa Good 1994 51.2 m 5,316
STREAM Iowa Fair 1923 9.1 m 5,300
OVER ABANDONED RR Iowa Fair 1966 46.9 m 5,300
CO RD G-77 Iowa Good 2001 54.6 m 5,300
PIG RUN CREEK Iowa Fair 1923 6.4 m 5,300
VINE STREET Iowa Fair 1966 46.9 m 5,300
DRAINAGE DITCH Iowa Fair 1953 8.2 m 5,300
VINE STREET Iowa Fair 1966 46.9 m 5,300
I-235 Iowa Good 2002 88.7 m 5,300
STREAM Iowa Fair 1953 7.0 m 5,300
ENGELS CREEK Iowa Good 2006 13.1 m 5,300
BEAVER CREEK Iowa Good 1976 6.7 m 5,300
BUFFALO CREEK Iowa Fair 1961 31.2 m 5,300
MOSQUITO CREEK Iowa Fair 1972 46.9 m 5,300
BIG CREEK Iowa Fair 1961 10.1 m 5,300
IOWA #146 Iowa Good 2002 61.9 m 5,300
IA 1 Iowa Good 2001 62.2 m 5,300
ABANDON RR Iowa Fair 1966 46.9 m 5,300
MCCANDLESSCLEGHORN DITCH Iowa Good 2023 30.7 m 5,300
FLOYD RIVER Iowa Fair 1993 87.2 m 5,300
OVER CC RR & CATFISH CK Iowa Fair 1982 90.5 m 5,295
DESMOINES RIVER TRIBUTAR Iowa Fair 1972 13.1 m 5,277
INDIAN CREEK Iowa Fair 1983 13.7 m 5,275
UPRR Iowa Good 1999 53.0 m 5,250
UPRR Iowa Good 1999 53.0 m 5,250
ELLIOT CREEK Iowa Good 2006 55.8 m 5,250
CEDAR RIVER & RD Iowa Fair 1974 243.8 m 5,228
BEAVER CREEK Iowa Good 1994 70.4 m 5,205
I-380 Iowa Good 1983 83.2 m 5,205
MUD CREEK Iowa Fair 1924 37.2 m 5,200
ELLIOT CREEK Iowa Fair 2015 55.8 m 5,200
I-80 Iowa Fair 1959 93.9 m 5,200
WEST FORK IOWA RIVER Iowa Fair 1958 32.9 m 5,200
IA 1 Iowa Good 2001 61.0 m 5,200
WILLOW CREEK Iowa Good 2005 13.1 m 5,200
CCP RR & BNSF RR & BUS 7 Iowa Fair 1999 261.2 m 5,200
DRAINAGE DITCH Iowa Fair 1976 9.8 m 5,200
PINE CREEK Iowa Good 1990 45.7 m 5,200
OAKS AVE Iowa Good 1996 58.2 m 5,200
FOURMILE CREEK Iowa Fair 1949 37.5 m 5,200
BLACK HAWK CREEK Iowa Good 1995 79.9 m 5,200
BLACK HAWK CK OVERFLOW Iowa Good 2006 62.5 m 5,200
WEST FORK FLOYD RIVER Iowa Fair 1976 9.8 m 5,200
CCP RR & BNSF RR & RAMP Iowa Fair 1999 230.7 m 5,200
CO RD G-77 Iowa Good 2001 54.6 m 5,200
LONE TREE CREEK Iowa Poor 1925 19.5 m 5,200
IAIS RR Iowa Fair 1930 52.1 m 5,200
TRAIL Iowa Good 2003 98.1 m 5,200
RAMP B TO IA AVE Iowa Good 1996 70.1 m 5,200
BRANCH MAQUOKETA RIVER Iowa Good 1975 11.6 m 5,200

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.