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
SALT CREEK Iowa Good 2019 140.5 m 6,600
LAMBERT AVE Iowa Good 2011 46.7 m 6,600
LAMBERT AVE Iowa Good 2011 46.7 m 6,600
IA 57 Iowa Fair 1994 93.9 m 6,600
BULGER CREEK & IAIS RR Iowa Fair 1997 182.0 m 6,600
WANATEE CREEK Iowa Good 2011 11.3 m 6,593
UP RR & ARMORY RD Iowa Good 2008 185.3 m 6,588
BROADWAY AVE Iowa Fair 1976 47.2 m 6,550
W BURLINGTON AVE Iowa Fair 1976 44.8 m 6,550
W BURLINGTON AVE Iowa Good 1976 50.0 m 6,550
BROADWAY AVE Iowa Fair 1976 47.2 m 6,550
BLACK HAWK CREEK Iowa Fair 1971 110.9 m 6,513
E BRANCH IOWA RIVER Iowa Good 2002 31.4 m 6,500
LITTLE WHISKEY CREEK Iowa Fair 1959 37.2 m 6,500
LITTLE WHISKEY CREEK Iowa Fair 1953 37.2 m 6,500
INDIAN CREEK Iowa Fair 1937 6.1 m 6,500
TRIB TO IOWA RIVER Iowa Good 2008 7.6 m 6,500
LOCAL STREAM Iowa Good 2000 55.8 m 6,500
E FORK CROOKED CREEK Iowa Fair 2014 60.0 m 6,500
SR T55 Iowa Good 2000 54.0 m 6,500
SR T55 Iowa Good 2000 54.0 m 6,500
US 34 Iowa Fair 1973 130.8 m 6,500
ALLEN CREEK Iowa Fair 1929 22.3 m 6,500
LOCAL STREAM Iowa Good 1999 54.9 m 6,500
STREAM Iowa Good 1991 6.4 m 6,500
BIG CREEK Iowa Good 1992 6.4 m 6,500
US 20 Iowa Good 1996 46.0 m 6,494
OVER CC RR Iowa Good 1996 84.7 m 6,494
LANE ST Iowa Fair 1996 39.9 m 6,494
OVER UP RR & STREET Iowa Fair 1983 212.8 m 6,454
WAUBONSIE DITCH Iowa Good 2010 75.3 m 6,450
WAUBONSIE DITCH Iowa Good 2011 75.3 m 6,450
US 30 Iowa Fair 1967 67.7 m 6,450
STREAM Iowa Fair 1991 7.9 m 6,447
US 20 Iowa Fair 1970 79.9 m 6,400
IA 163 Iowa Fair 1994 74.1 m 6,400
E. FORK CROOKED CREEK Iowa Good 1997 55.8 m 6,400
SPRING CREEK/PEDESTRIAN Iowa Fair 1958 11.9 m 6,400
QUARTER SECTION RUN Iowa Good 2010 15.9 m 6,400
BR WALNUT CREEK Iowa Good 1980 6.4 m 6,400
US 30 Iowa Good 1975 82.9 m 6,394
CROW CREEK Iowa Good 1993 43.3 m 6,382
GOOSE CREEK Iowa Poor 1978 24.7 m 6,376
225TH STREET Iowa Fair 1974 46.0 m 6,350
MUCHAKINOCK CREEK Iowa Good 2001 48.5 m 6,350
225TH STREET Iowa Fair 1974 46.0 m 6,350
SILVER CREEK Iowa Fair 1974 63.7 m 6,350
SILVER CREEK Iowa Fair 1974 63.7 m 6,350
STREAM Iowa Good 1982 21.6 m 6,350
STREAM Iowa Good 2020 9.9 m 6,300

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.