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
BERRYS RUN Iowa Good 2013 22.3 m 6,874
US 20 Iowa Good 1984 81.7 m 6,868
EAST HENRY ST Iowa Fair 1967 48.5 m 6,858
KEG CREEK Iowa Fair 1971 80.8 m 6,850
KEG CREEK Iowa Fair 1971 80.8 m 6,850
DRAINAGE DITCH Iowa Good 2009 37.5 m 6,850
DRAINAGE DITCH Iowa Good 2009 37.5 m 6,850
IA 5 Iowa Good 1997 85.6 m 6,850
HAYNIE SLOUGH Iowa Fair 1971 25.3 m 6,850
WILLOW CREEK Iowa Fair 1933 16.2 m 6,850
WILLOW CREEK Iowa Fair 1970 15.9 m 6,850
HAYNIE SLOUGH Iowa Fair 1971 25.3 m 6,850
SMALL STREAM Iowa Good 1991 7.0 m 6,813
OVER UP RR Iowa Poor 1980 85.0 m 6,813
HOG CREEK Iowa Fair 1983 34.4 m 6,800
GRUNDY RD Iowa Good 2000 50.0 m 6,800
PONY CREEK Iowa Good 2011 47.2 m 6,800
Y 17 (EPWORTH) Iowa Good 1988 52.1 m 6,800
GRUNDY RD Iowa Good 2000 50.0 m 6,800
STREAM Iowa Good 2000 47.2 m 6,800
BNSF RR & EATON DITCH Iowa Fair 1970 98.1 m 6,800
OVER BNSF RR Iowa Fair 1968 65.5 m 6,800
JESUP AVE Iowa Good 2011 43.6 m 6,800
STREAM Iowa Fair 1919 13.1 m 6,800
BNSF RR & EATON DITCH Iowa Fair 1970 98.1 m 6,800
JESUP AVE Iowa Good 2010 43.6 m 6,800
PONY CREEK Iowa Good 2010 47.2 m 6,800
RAMP OVER IA 376 & UP RR Iowa Fair 1976 104.9 m 6,800
DRAINAGE Iowa Fair 1956 6.4 m 6,800
FOURMILE CREEK Iowa Fair 1922 19.2 m 6,800
OVER UP RR Iowa Fair 1982 107.0 m 6,800
I-380 & US 218 Iowa Good 1972 80.2 m 6,800
WINNEBAGO RIVER Iowa Good 1984 59.7 m 6,800
BEAR CREEK Iowa Good 2016 47.2 m 6,800
FOURMILE CREEK Iowa Fair 1949 15.9 m 6,800
Y 17 (EPWORTH) Iowa Fair 1988 52.1 m 6,750
OVER UP RR Iowa Fair 1963 62.8 m 6,750
STREAM Iowa Good 2000 47.2 m 6,750
ROGG CREEK Iowa Good 1985 46.9 m 6,700
I80 WB TO US 218 SB Iowa Good 2020 267.2 m 6,700
FOUR MILE CREEK Iowa Good 1981 69.5 m 6,698
OTTER CREEK Iowa Good 1982 6.4 m 6,694
RALSTON CREEK Iowa Good 2014 17.7 m 6,667
BIG CREEK Iowa Fair 1960 6.4 m 6,650
IA 57 Iowa Fair 1994 93.0 m 6,650
MUDDY CREEK Iowa Good 1988 39.0 m 6,625
MOSQUITO CREEK & RR Iowa Fair 1996 174.0 m 6,622
SALT CREEK Iowa Good 2019 140.5 m 6,600
LAMBERT AVE Iowa Good 2011 46.7 m 6,600
LITTLE MOSQUITO CREEK Iowa Fair 1968 8.2 m 6,600

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.