Browse Bridge Database

12,684 bridges in the FHWA National Bridge Inventory in Louisiana.

National Bridge Inventory Database

Browse 12,684 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
BAYOU PIERRE Louisiana Fair 1987 7.6 m 3,940
RAMP F Louisiana Fair 1977 124.4 m 3,938
BAYOU DULAC Louisiana Fair 1950 103.6 m 3,936
BORDELON SLOUGH Louisiana Fair 1961 13.1 m 3,936
BUSHNECK BAYOU Louisiana Fair 1948 51.2 m 3,931
BUSHNECK BAYOUREL Louisiana Fair 1948 29.3 m 3,931
CREEK Louisiana Fair 1975 6.7 m 3,931
CREEK Louisiana Good 1936 11.0 m 3,924
I-20 Louisiana Poor 1964 82.6 m 3,924
CROSS BAYOU RELIEF Louisiana Good 2016 42.7 m 3,924
CREEK Louisiana Fair 1936 21.9 m 3,924
CROSS BAYOU Louisiana Fair 2016 64.0 m 3,924
WEST RELIEF Louisiana Fair 1954 30.5 m 3,923
MIDDLE RELIEF Louisiana Fair 1954 97.5 m 3,923
VAUGHN RELIEF Louisiana Fair 1954 67.1 m 3,923
WEST CALCASIEU RIVER REL Louisiana Poor 1980 91.4 m 3,923
WEST CALCASIEU RIVER REL Louisiana Poor 1980 76.2 m 3,923
BAYOU TERREBONNE Louisiana Good 1978 21.9 m 3,919
DRAIN CANAL Louisiana Fair 1978 36.6 m 3,912
IRISH BAYOU Louisiana Poor 1978 103.6 m 3,912
I-10 Louisiana Fair 1967 527.3 m 3,912
LAKE PONTCHARTRAIN Louisiana Poor 1938 7,596.2 m 3,912
BAYOU BEOUF Louisiana Poor 1958 1,114.0 m 3,905
BORROW CANAL Louisiana Good 1993 30.5 m 3,905
ALLIGATOR BAYOU RELIEF Louisiana Good 2006 36.0 m 3,905
ALLIGATOR BAYOU Louisiana Good 2006 71.9 m 3,905
BAYOU CAROLINE Louisiana Good 2006 24.1 m 3,905
PRETTY CREEK Louisiana Fair 2005 152.4 m 3,904
COMITE RIVER RELIEF #2 Louisiana Fair 2005 36.6 m 3,904
COMITE RIVER RELIEF #1 Louisiana Fair 2005 36.6 m 3,904
COMITE RIVER RELIEF Louisiana Fair 2005 36.6 m 3,904
COMITE RIVER Louisiana Good 2005 121.9 m 3,904
Creek Louisiana Good 2023 24.4 m 3,900
PIERRE BAYOU Louisiana Fair 1983 76.5 m 3,900
RESERVOIR Louisiana Fair 2000 30.5 m 3,890
BOGZACK CREEK Louisiana Fair 1971 10.4 m 3,890
CHICKASAW CREEK Louisiana Good 2005 67.1 m 3,888
MILL CREEK Louisiana Fair 1950 24.4 m 3,888
LITTLE CHICKASAW Louisiana Good 1950 24.4 m 3,888
TARVER CREEK Louisiana Fair 1950 43.3 m 3,888
BAYOU FUNNYLOUIS Louisiana Fair 1956 54.9 m 3,888
CREEK Louisiana Fair 1950 9.8 m 3,888
CREEK Louisiana Good 2005 36.6 m 3,888
CRAB GULLY Louisiana Poor 1957 15.2 m 3,884
DRAIN Louisiana Fair 1973 18.3 m 3,881
CREEK Louisiana Poor 1973 29.0 m 3,881
B WYCOFF Louisiana Fair 1954 42.7 m 3,881
BAYOU LAFOURCHE Louisiana Fair 1977 61.6 m 3,881
MORGANZA SPILLWAY Louisiana Fair 1954 1,257.3 m 3,874
BOUDREAUX CANAL Louisiana Poor 1959 86.6 m 3,872

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.