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.

Clear
BridgeLocationConditionYear BuiltLengthADT
MACKS BAYOU Louisiana Fair 1970 35.1 m 4,896
BOGUE FALAYA RIVER Louisiana Fair 2003 57.9 m 4,871
DRAIN Louisiana Good 1997 7.0 m 4,871
DIVERSION CANAL Louisiana Fair 1993 54.9 m 4,850
Caddo Lake Louisiana Good 2024 624.8 m 4,850
CURTIS CREEK Louisiana Fair 1997 7.9 m 4,844
WEST HOG BRANCH Louisiana Fair 1997 30.5 m 4,844
DRAIN Louisiana Good 1997 11.3 m 4,844
DRAIN Louisiana Fair 1997 11.3 m 4,844
BLACK BAYOU Louisiana Poor 1974 17.4 m 4,835
NARCISSE BAYOU Louisiana Good 2018 24.4 m 4,835
I-12 Louisiana Fair 1975 81.1 m 4,830
I-10 Louisiana Fair 1966 76.8 m 4,815
CREEK Louisiana Fair 1987 30.5 m 4,806
CALCASIEU RIVER Louisiana Fair 1982 384.7 m 4,806
I-10 Louisiana Fair 1966 70.1 m 4,801
KCS RR Louisiana Good 2003 68.6 m 4,790
BAYOU SAN PATRICIO Louisiana Good 2006 182.9 m 4,790
HARPOON BAYOU RELIEF Louisiana Good 2006 61.0 m 4,790
BAYOU TORO RELIEF Louisiana Good 2009 54.9 m 4,790
BAYOU SCIE RELIEF Louisiana Good 2007 67.1 m 4,790
BAYOU SAN MIGUEL Louisiana Fair 1963 61.0 m 4,790
BAYOU TORO Louisiana Fair 2009 61.0 m 4,790
CHOCTAW BAYOU Louisiana Fair 1962 48.8 m 4,790
CASTOR BAYOU Louisiana Good 2006 24.4 m 4,790
BAYOU SCIE Louisiana Good 2007 97.5 m 4,790
MIDDLE RELIEF Louisiana Fair 1963 79.2 m 4,790
BAYOU SCIE TRIBUTARY Louisiana Good 2007 24.4 m 4,790
HARPOON BAYOU Louisiana Good 2006 42.7 m 4,790
LEWIS CREEK Louisiana Good 2006 48.8 m 4,790
PHILLIPS CREEK Louisiana Good 2006 42.7 m 4,790
BAYOU SAN MIGUEL Louisiana Fair 1963 61.0 m 4,790
LEWIS CREEK RELIEF Louisiana Good 2005 10.7 m 4,790
BEAR CREEK Louisiana Good 2006 48.8 m 4,790
BARRON RD TY TO BOGGY B Louisiana Fair 1992 17.4 m 4,787
BAYOU WIKOFF Louisiana Fair 1965 61.0 m 4,777
TERREBONNE BAYOU Louisiana Fair 1963 23.2 m 4,764
TANGIPAHOA RIVER Louisiana Fair 1965 185.9 m 4,748
DRAIN Louisiana Good 1982 11.9 m 4,748
SCOTT CREEK Louisiana Poor 1970 23.5 m 4,748
DAVIS BRANCH Louisiana Good 1981 17.7 m 4,748
SWEETWATER CREEK Louisiana Fair 1970 35.1 m 4,748
DRAUGHAN CREEK Louisiana Poor 1960 29.3 m 4,745
BAYOU CASTOR N BRANCH Louisiana Good 1989 49.1 m 4,743
BAYOU JULIEN Louisiana Good 1972 30.5 m 4,740
YOUNGS BAYOU Louisiana Fair 1972 42.7 m 4,740
OLD RIVER Louisiana Fair 1972 73.2 m 4,740
BAYOU VALANCE Louisiana Fair 1982 17.4 m 4,729
WARD CREEK Louisiana Good 2017 24.4 m 4,725
BAYOU TERREBONNE Louisiana Good 2017 27.4 m 4,724

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.