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.

Clear
BridgeLocationConditionYear BuiltLengthADT
US 218 Iowa Good 1989 79.6 m 1,928
SIXMILE CREEK Iowa Fair 1972 30.5 m 1,926
CREEK Iowa Good 1977 7.6 m 1,926
BLACKHAWK CREEK Iowa Fair 1985 10.7 m 1,925
DRAINAGE Iowa Fair 1972 8.2 m 1,925
U.S. 61 Iowa Good 2000 71.3 m 1,920
S SKUNK RIVER Iowa Fair 1979 58.5 m 1,920
SIMMONS CREEK Iowa Good 2014 14.0 m 1,920
OVER UP RR Iowa Fair 1939 43.3 m 1,920
SOUTH SKUNK RIVER Iowa Good 1988 103.6 m 1,920
CALAMUS CREEK Iowa Fair 1954 39.0 m 1,920
I-35 Iowa Good 1999 79.2 m 1,911
LITTLE MAQUOKETA RIVER Iowa Good 2015 175.6 m 1,910
EAST NISHNABOTNA RIVER Iowa Fair 1975 185.6 m 1,910
DRAINAGE DITCH Iowa Good 2015 9.6 m 1,910
E BIG CREEK Iowa Fair 1956 37.8 m 1,910
FISHER CREEK Iowa Fair 1975 40.5 m 1,910
STREAM Iowa Good 1985 9.8 m 1,910
BRANCH OLD MANS CREEK Iowa Fair 1985 44.5 m 1,910
BRANCH OLD MANS CREEK Iowa Fair 1985 9.8 m 1,910
BRANCH OLD MANS CREEK Iowa Good 1985 9.8 m 1,910
BIG SIOUX RIVER Iowa Fair 1991 157.9 m 1,910
DRAINAGE DITCH Iowa Good 1954 7.6 m 1,910
CEDAR RIVER Iowa Fair 1975 175.9 m 1,908
TROLLEY TRAIL Iowa Good 1989 53.3 m 1,908
BIG CEDAR RIVER Iowa Fair 2002 97.5 m 1,905
OVRFLW SHELL ROCK RIVER Iowa Poor 1900 21.9 m 1,902
210TH ST Iowa Fair 1981 82.0 m 1,900
BEEDS CREEK Iowa Fair 1956 25.0 m 1,900
WOLF CREEK Iowa Fair 1985 29.9 m 1,900
LITTLE CEDAR RIVER Iowa Good 1979 85.3 m 1,900
STREAM Iowa Fair 1989 10.2 m 1,900
W BR FLOYD RIVER Iowa Fair 1989 79.6 m 1,900
DRY CREEK Iowa Good 1996 39.3 m 1,895
TRIB TO CRANE CREEK Iowa Good 2007 27.4 m 1,895
US 18 Iowa Good 1998 71.3 m 1,895
UP RR Iowa Fair 1984 54.6 m 1,890
BRANCH BEAVER CREEK Iowa Fair 1967 10.4 m 1,890
MIDDLE BEAVER CREEK Iowa Good 1932 9.8 m 1,890
BRANCH BEAVER CREEK Iowa Fair 1967 10.4 m 1,890
CLANTON CREEK Iowa Good 1976 57.3 m 1,890
MIDDLE RIVER Iowa Fair 1976 89.3 m 1,890
EMIGRANT CREEK Iowa Fair 1992 8.8 m 1,890
EMIGRANT CREEK Iowa Good 1992 42.4 m 1,890
PARADISE CREEK Iowa Fair 1991 10.1 m 1,890
PARADISE CREEK Iowa Good 1992 9.1 m 1,890
STREAM Iowa Fair 1977 7.6 m 1,890
DRAINAGE DITCH Iowa Fair 1976 6.7 m 1,890
GRANTS CREEK Iowa Good 1984 7.6 m 1,890
STREAM Iowa Good 2017 6.3 m 1,890

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.