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
GRAND RIVER Iowa Fair 2011 113.4 m 820
SMALL STREAM Iowa Good 1987 6.4 m 820
PRAIRIE CREEK Iowa Poor 1960 6.4 m 820
SMALL STREAM Iowa Fair 1987 11.6 m 820
OTTER CREEK Iowa Poor 1963 46.9 m 820
DRAINAGE DITCH Iowa Good 1989 6.7 m 820
DRAINAGE DITCH Iowa Good 1989 6.7 m 820
BALLARD CREEK Iowa Good 1989 46.9 m 820
SKUNK RIVER Iowa Fair 1989 101.2 m 820
OVER BNSF RR Iowa Good 1994 93.3 m 820
UNION 118 WIRE LK OUTLT Iowa Good 1989 23.8 m 820
EAGLE CREEK Iowa Poor 1963 20.7 m 818
CLEAR CREEK Iowa Good 2016 9.4 m 818
EMERY CREEK Iowa Fair 1977 11.6 m 818
WHISKEY CREEK Iowa Fair 1974 30.5 m 818
PRAIRIE CREEK Iowa Fair 1964 23.8 m 818
LITTLE OCHEYEDAN RIVER Iowa Good 1977 21.3 m 818
W FK W NISHNABOTNA RIVER Iowa Fair 1963 38.4 m 816
HICKEY CREEK Iowa Fair 1963 31.1 m 816
MOSQUITO CREEK Iowa Fair 1974 58.5 m 816
POYNER CREEK Iowa Good 1975 17.5 m 815
I-380 Iowa Fair 1982 125.0 m 815
BEAVER DAM CREEK Iowa Fair 1986 9.8 m 815
WINNEBAGO RIVER Iowa Fair 1969 53.0 m 815
US 61 Iowa Good 1981 82.9 m 814
DRAINAGE Iowa Good 1951 7.0 m 814
FLOYD RIVER Iowa Poor 1954 84.1 m 813
SHELL ROCK RIVER Iowa Good 1996 96.3 m 813
DRAINAGE DITCH Iowa Fair 1931 8.2 m 810
STREAM Iowa Fair 1973 8.8 m 810
CREEK Iowa Fair 1973 35.4 m 810
CEDAR CREEK Iowa Fair 1967 44.2 m 810
WILLOW RIVER Iowa Fair 1996 40.5 m 810
DES MOINES RIVER Iowa Fair 1968 652.0 m 810
BEAR CREEK Iowa Fair 1967 38.1 m 810
SILVER CREEK Iowa Good 2011 28.5 m 810
N.RACCOON RIVER Iowa Fair 1990 7.9 m 810
SMALL STREAM Iowa Fair 1952 6.4 m 810
CARSON CREEK Iowa Poor 1964 31.4 m 810
REASONER CREEK Iowa Fair 1996 27.7 m 810
DRAINAGE DITCH Iowa Fair 1990 6.4 m 810
S SKUNK RIVER Iowa Poor 1961 107.0 m 810
WAPSINONOC CREEK Iowa Good 2021 39.9 m 810
FORK OF LITTLE SIOUX Iowa Good 2002 65.5 m 808
SMALL Iowa Good 1977 7.9 m 808
SMALL STREAM Iowa Fair 1954 42.1 m 807
IAIS RR Iowa Good 1978 57.0 m 807
S RIVER Iowa Poor 1949 70.7 m 807
OTTER CREEK Iowa Fair 2001 47.9 m 805
SMALL STREAM Iowa Good 2019 22.3 m 805

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.