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
US 20 Iowa Good 1990 107.6 m 5,485
SUGAR CREEK Iowa Good 2016 42.7 m 5,474
BNSF RR CITY STS Iowa Fair 1972 206.0 m 5,450
BNSF RR Iowa Good 1976 61.3 m 5,450
IOWA #146 Iowa Good 2002 61.9 m 5,450
BNSF RR CITY STS Iowa Fair 1972 197.6 m 5,450
N FORK MAQUOKETA RIVER Iowa Fair 1958 153.0 m 5,450
US 218 Iowa Good 1991 59.1 m 5,414
CEDAR RIVER Iowa Fair 1988 188.7 m 5,414
CEDAR RIVER OVERFLOW Iowa Fair 1969 138.1 m 5,414
OTTER CREEK Iowa Good 1971 57.6 m 5,401
EAST OTTER CREEK Iowa Good 2023 44.0 m 5,401
SOUTH RIVER Iowa Good 2016 75.3 m 5,400
SPRING CREEK Iowa Good 2019 203.9 m 5,400
SNYDER CREEK Iowa Fair 1957 8.8 m 5,400
IOWA RIVER Iowa Poor 1916 96.0 m 5,400
TROUT CREEK Iowa Fair 1969 39.0 m 5,400
OTTER CREEK Iowa Fair 1979 37.5 m 5,400
WAGNER CREEK Iowa Good 2003 11.6 m 5,400
CC&P RR Iowa Fair 1968 115.2 m 5,400
INDIAN CREEK Iowa Good 2011 8.2 m 5,400
SPRING CREEK Iowa Good 2019 203.9 m 5,400
SOUTH RIVER OVERFLOW Iowa Good 2011 8.1 m 5,400
DRAINAGE DITCH Iowa Good 1967 6.4 m 5,400
N FK LONG CREEK Iowa Good 1997 63.6 m 5,400
DRAINAGE Iowa Good 2004 6.4 m 5,400
25TH ST Iowa Good 1967 48.2 m 5,400
25TH ST Iowa Fair 1967 48.2 m 5,400
WINNEBAGO RIVER Iowa Fair 1988 66.1 m 5,400
DRAINAGE Iowa Good 2018 8.0 m 5,400
N FORK MAQUOKETA RIVER Iowa Fair 1986 153.3 m 5,400
DRY RUN CREEK Iowa Good 1978 8.8 m 5,400
VILLAGE CREEK Iowa Fair 1965 48.2 m 5,400
BORDEAUX RUN Iowa Good 1993 10.1 m 5,395
CATFISH CREEK Iowa Fair 1978 47.2 m 5,395
OVER UP RR Iowa Fair 1984 52.1 m 5,377
DRY CREEK Iowa Good 2010 39.6 m 5,369
OVER UP RR Iowa Fair 1978 219.8 m 5,368
DRAINAGE DITCH Iowa Good 1994 7.6 m 5,358
1ST ST S Iowa Good 1988 47.5 m 5,350
BNSF RR Iowa Fair 2006 122.5 m 5,350
IA NORTHERN RR & STREAM Iowa Good 1998 184.1 m 5,350
FLOOD CREEK Iowa Good 1998 54.6 m 5,350
SHELLROCK RVR REDBALL RD Iowa Good 1999 147.8 m 5,350
IA NORTHERN RR & STREAM Iowa Good 1998 184.1 m 5,350
FLOOD CREEK Iowa Good 1998 54.6 m 5,350
SHELLROCK RVR REDBALL RD Iowa Good 1999 147.8 m 5,350
1ST ST S Iowa Good 1988 48.5 m 5,350
DRAINAGE Iowa Fair 1986 7.0 m 5,322
IA 163 Iowa Good 1994 73.2 m 5,322

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.