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
IA 64 Iowa Good 1997 61.9 m 3,550
WEST NISHNABOTNA RIVER Iowa Fair 1962 28.3 m 3,550
2ND AVE S Iowa Fair 2010 80.0 m 3,550
IA 14 Iowa Good 1995 84.1 m 3,550
SR X-31 & LONG CREEK Iowa Good 2003 143.3 m 3,550
BUFFALO CREEK Iowa Fair 1977 49.7 m 3,550
SMALL STREAM Iowa Fair 1960 6.4 m 3,550
IA 3 Iowa Good 1996 61.3 m 3,550
2ND AVE S Iowa Good 2010 80.0 m 3,550
X-31 & LONG CREEK Iowa Good 2005 152.4 m 3,550
WOLF CREEK Iowa Good 2014 86.0 m 3,540
BIG CREEK OVERFLOW Iowa Fair 1953 24.7 m 3,540
OVER IANR RR Iowa Fair 1967 61.0 m 3,540
SHELL ROCK RIVER Iowa Fair 1967 142.0 m 3,540
MILL CREEK Iowa Fair 1974 25.3 m 3,540
US 6 TO I 80 EB Iowa Good 2019 328.3 m 3,540
WALNUT CREEK Iowa Good 2006 55.8 m 3,538
WATERMAN CREEK Iowa Good 2020 62.3 m 3,530
STREAM Iowa Fair 1956 13.7 m 3,530
MUD CREEK Iowa Good 2008 56.1 m 3,530
STREAM Iowa Fair 1958 8.1 m 3,530
RAILROAD CREEK Iowa Poor 1961 11.0 m 3,529
FLOYD RIVER Iowa Poor 1962 93.0 m 3,523
S. FORK LONG CREEK Iowa Good 1996 8.8 m 3,520
OTTER CREEK Iowa Fair 1959 31.1 m 3,520
WILLOW CREEK Iowa Fair 1958 34.1 m 3,520
BOYER RIVER Iowa Fair 1959 86.6 m 3,520
SMALL STREAM Iowa Fair 1974 15.2 m 3,506
PRIVATE DR Iowa Fair 1972 26.8 m 3,502
I-235 Iowa Good 2001 76.8 m 3,501
DME RR Iowa Fair 1963 67.1 m 3,500
DME RR Iowa Fair 1963 67.1 m 3,500
DRAINAGE DITCH Iowa Fair 1958 7.9 m 3,500
BUFFALO CREEK Iowa Fair 1978 93.0 m 3,500
CEDAR RIVER Iowa Fair 1968 203.6 m 3,500
MUSCATINE SLOUGH Iowa Good 2002 40.8 m 3,500
ROCK CREEK Iowa Fair 1955 13.7 m 3,500
US 34 Iowa Fair 2001 81.7 m 3,500
BUFFALO CREEK Iowa Fair 1978 93.0 m 3,500
BNSF RR Iowa Good 1999 75.6 m 3,500
MUSCATINE SLOUGH Iowa Good 2002 40.8 m 3,500
DRAINAGE DITCH Iowa Good 2006 8.8 m 3,500
I-380 Iowa Good 1980 75.0 m 3,500
BNSF RR Iowa Fair 1999 75.6 m 3,500
STREAM Iowa Good 2023 31.4 m 3,500
DESMOINES RIVER TRIBUTAR Iowa Good 1974 35.1 m 3,491
US 63 Iowa Good 2011 69.9 m 3,490
MUD CREEK Iowa Fair 1952 34.1 m 3,480
MILLERS CREEK Iowa Fair 1952 55.5 m 3,480
STREAM Iowa Fair 1952 24.4 m 3,480

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.