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
CREEK Louisiana Fair 1940 7.0 m 4,492
TRIB TO GILMER BAYOU Louisiana Good 2016 6.4 m 4,482
CREEK Louisiana Fair 1962 11.9 m 4,481
DRAIN Louisiana Fair 1962 11.6 m 4,481
1-20 Louisiana Good 2019 83.8 m 4,475
BAYOU NA BONCHASSE Louisiana Good 2000 42.7 m 4,470
BAYOU NA BONCHASSE RELIE Louisiana Good 2000 30.5 m 4,470
PORT ALLEN LOCK Louisiana Fair 1980 73.2 m 4,464
CALCASIEU RIVER Louisiana Fair 2013 42.7 m 4,463
CREEK Louisiana Good 1972 9.8 m 4,454
CREEK Louisiana Fair 1972 8.2 m 4,454
BAYOU CALAHAN Louisiana Fair 1982 54.9 m 4,451
DRAINAGE CANAL Louisiana Good 1962 13.4 m 4,451
I-12 Louisiana Poor 1972 98.1 m 4,450
I-12 Louisiana Fair 1972 86.9 m 4,450
HORSESHOE CANAL Louisiana Poor 1975 36.6 m 4,442
HYNSON BAYOU Louisiana Good 1994 9.8 m 4,442
CHATLIN LAKE CANAL Louisiana Good 1994 30.5 m 4,442
KARRS CREEK Louisiana Poor 1964 87.5 m 4,439
CREEK Louisiana Fair 1948 22.6 m 4,413
I-12 Louisiana Fair 1976 85.0 m 4,410
DITCH Louisiana Good 1988 9.1 m 4,405
PALMETTO CREEK Louisiana Good 2020 24.4 m 4,405
SUMMER GROVE DITCH Louisiana Fair 1972 30.5 m 4,404
LAFOURCHE BAYOU Louisiana Fair 1968 59.4 m 4,400
DESIARD ST & ICG RR Louisiana Fair 1971 545.0 m 4,400
VERMILION RIVER Louisiana Good 1988 101.5 m 4,400
JACKSON CREEK Louisiana Fair 1951 13.4 m 4,394
BAGET CREEK Louisiana Fair 1949 31.7 m 4,394
CONVENTION ST. OFF RAMP Louisiana Fair 1963 145.4 m 4,381
LAWRENCE CANAL Louisiana Fair 1970 30.5 m 4,380
CITRUS CANAL RD. Louisiana Good 1970 30.5 m 4,380
JAHNCKE CANAL Louisiana Fair 1972 30.5 m 4,380
BAYOU MARINGOUIN Louisiana Fair 1964 11.3 m 4,376
COULEE Louisiana Fair 2003 24.4 m 4,376
Port Allen Lock Louisiana Poor 1961 117.7 m 4,376
RICHARD BAYOU Louisiana Fair 1968 30.5 m 4,376
STREAM Louisiana Fair 1923 8.8 m 4,376
BAYOU WHITE VINE Louisiana Fair 1935 7.3 m 4,369
BAYOU CLEAR Louisiana Fair 1989 52.1 m 4,368
BAYOU CLEAR Louisiana Good 2005 66.1 m 4,368
DAIGRE CANAL Louisiana Fair 1950 42.7 m 4,367
CHIPPEWA OFF RAMP (S.B.) Louisiana Fair 1970 63.1 m 4,364
I-12 Louisiana Good 1969 104.5 m 4,360
MUDDY BAYOU Louisiana Fair 1960 73.8 m 4,357
CAMP BAYOU Louisiana Fair 1960 61.6 m 4,357
BULL BAYOU Louisiana Fair 1960 36.6 m 4,357
BAYOU MALLET Louisiana Good 1931 16.2 m 4,319
DUGDEMONA RIVER Louisiana Poor 1929 39.3 m 4,317
DUGEMONA RIVER RELIEF Louisiana Good 1996 67.1 m 4,317

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.