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
STREAM Iowa Fair 1959 7.0 m 3,480
OLD FLOYD RIVER CHANNEL Iowa Good 1997 96.3 m 3,475
WEST DES MOINES RIVER Iowa Good 2015 81.0 m 3,472
LITTLE SILVER CREEK Iowa Good 1989 39.3 m 3,470
KEG CREEK Iowa Good 2011 64.1 m 3,470
CHARITON RIVER Iowa Fair 1963 125.9 m 3,470
DRAINAGE DITCH #96 Iowa Fair 1973 28.3 m 3,470
CEDAR RIVER Iowa Poor 1979 208.8 m 3,461
IOWA RIVER Iowa Fair 1978 202.7 m 3,460
BRANCH MOSQUITO CREEK Iowa Fair 1981 6.4 m 3,460
BAYS BRANCH CREEK Iowa Good 1981 34.4 m 3,460
BOONE RIVER Iowa Fair 1972 99.4 m 3,460
E FORK DES MOINES RIVER Iowa Fair 1971 75.0 m 3,460
IA 12 & VIRGINIA ST Iowa Good 2017 175.6 m 3,460
OVER UP RR(ABAND) Iowa Fair 1971 56.1 m 3,450
STREAM Iowa Fair 1972 37.5 m 3,450
PRAIRIE CREEK Iowa Good 2024 31.4 m 3,450
GRAND RIVER Iowa Fair 1971 70.1 m 3,450
SUGAR CREEK Iowa Fair 2007 121.3 m 3,450
EAGLE CREEK Iowa Fair 1932 13.1 m 3,450
LITTLE EAGLE CREEK Iowa Good 2016 6.8 m 3,450
FLOYD RIVER TRIBUTARY Iowa Fair 2003 28.0 m 3,450
US 34 Iowa Fair 2001 81.7 m 3,450
CC RR Iowa Good 2011 86.6 m 3,450
CC RR Iowa Good 2010 86.6 m 3,450
IAIS RR Iowa Good 1981 46.0 m 3,444
RAMP H Iowa Fair 1984 77.4 m 3,440
SO BRANCH TURKEY RIVER Iowa Fair 1974 11.6 m 3,440
SHELL ROCK RIVER Iowa Fair 1915 81.1 m 3,435
US 218 Iowa Good 2001 116.7 m 3,430
OVER BNSF RR Iowa Fair 1967 108.5 m 3,430
WAPSIPINICON RIVER Iowa Fair 1955 146.3 m 3,430
E CHAN WAPSIPINICON RVR Iowa Fair 1955 82.3 m 3,430
CALAMUS DRAINAGE DITCH Iowa Fair 1955 56.1 m 3,430
OVER ABANDON RR & STREAM Iowa Fair 1952 77.1 m 3,430
WINNEBAGO RIVER Iowa Fair 1962 66.4 m 3,427
W BRANCH WAPSINONOC CRK Iowa Good 1989 21.3 m 3,410
FORK LITTLE SIOUX RIVER Iowa Fair 1979 31.4 m 3,410
DRAINAGE DITCH #25 Iowa Fair 1976 22.3 m 3,410
INDIAN CREEK Iowa Fair 1992 31.4 m 3,410
LITTLE INDIAN CREEK Iowa Fair 1977 25.3 m 3,410
STREAM Iowa Fair 1972 37.5 m 3,410
BLACK HAWK CREEK Iowa Fair 1955 98.1 m 3,402
VALLEY ST Iowa Good 1990 45.7 m 3,400
SUGAR CREEK Iowa Fair 2007 121.3 m 3,400
VALLEY ST Iowa Good 1990 44.5 m 3,400
BUDD CREEK Iowa Good 1974 35.4 m 3,400
CEDAR RIVER OVERFLOW Iowa Good 1995 177.1 m 3,400
ABANDON RR BIKE PATH Iowa Fair 1960 43.0 m 3,400
STREAM Iowa Fair 1960 10.1 m 3,400

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.