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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
I20;RAMP N5 Louisiana Fair 1965 104.9 m 15,642
CITY STREETS UP RR Louisiana Fair 1992 376.4 m 15,642
I20;RAMP S5 Louisiana Fair 1965 143.3 m 15,642
US165 NB RAMP FROM I20 W Louisiana Fair 1966 118.0 m 15,642
GROUND Louisiana Fair 1992 52.4 m 15,642
I20;RAMP S2 Louisiana Fair 1965 208.8 m 15,642
I20;RAMP N2 Louisiana Fair 1965 85.0 m 15,642
MACKS BAYOU Louisiana Poor 1967 66.4 m 15,642
E. Grolee St Louisiana Good 1983 118.3 m 15,642
I20;RAMP N1 Louisiana Fair 1965 272.5 m 15,642
RAMP I-20(EB)-I-220(NB) Louisiana Good 1979 542.8 m 15,642
I20;RAMP 2 Louisiana Good 1965 75.3 m 15,642
GROUND Louisiana Good 1995 106.7 m 15,642
GROUND Louisiana Good 1994 160.9 m 15,642
I-20;RAMP N4 Louisiana Good 1965 94.5 m 15,642
I20;RAMP N3 Louisiana Fair 1965 189.0 m 15,642
RAMP E1A CITY STS. Louisiana Good 1992 130.8 m 15,642
I20;RAMP S4 Louisiana Good 1965 226.2 m 15,642
RAMP E-3 ELLIOT ST. Louisiana Good 1995 104.9 m 15,642
E.Grolee St/MPRR Louisiana Good 1983 250.5 m 15,642
I-49 US71 RAMPS PHILLIP Louisiana Good 1996 769.6 m 15,642
I20;RAMP S3 Louisiana Fair 1965 120.4 m 15,642
GROUND Louisiana Good 1993 88.1 m 15,642
HYNSON BAYOU Louisiana Good 1990 30.5 m 15,642
I-55 ON RAMP NORTH @ US5 Louisiana Good 1975 169.2 m 15,642
RAMP RR CITY STS BAYO Louisiana Fair 1995 727.9 m 15,642
I-55 OFF RAMP @ US 51 Louisiana Good 1975 205.7 m 15,642
US 167 BUSINESS Louisiana Good 1995 53.6 m 15,642
L & A RR Louisiana Fair 1960 86.0 m 15,642
RAMPS US 71 DITCH RR Louisiana Good 1992 545.0 m 15,642
US 71 UP RR RAMP A-1 Louisiana Good 1992 467.0 m 15,642
FLAT RIVER Louisiana Good 2003 61.0 m 15,627
MACKS BAYOU Louisiana Good 2014 13.7 m 15,627
ALLIGATOR BAYOU Louisiana Poor 1955 24.4 m 15,627
FIFI BAYOU Louisiana Good 2021 61.0 m 15,627
RED CHUTE BAYOU Louisiana Fair 2003 91.4 m 15,627
DRAIN Louisiana Fair 1927 21.6 m 15,627
DRAIN Louisiana Fair 1930 12.5 m 15,627
KANSAS CITY SOUTHERN RR Louisiana Fair 1956 210.9 m 15,612
NO&NE RAILROAD Louisiana Poor 1937 252.4 m 15,607
DRAIN Louisiana Fair 1930 7.3 m 15,607
CREEK Louisiana Fair 1966 42.7 m 15,593
VERMILION RIVER Louisiana Fair 1951 78.6 m 15,593
BAYOU VERRETTE Louisiana Fair 1964 18.3 m 15,589
CREOSOTE BRANCH Louisiana Good 2006 36.6 m 15,576
KCS RAILROAD Louisiana Fair 2006 225.6 m 15,576
B TERREBONNE Louisiana Good 1976 23.2 m 15,540
SWAMP/BLUEBONNET Louisiana Fair 1978 30.8 m 15,539
SWAMP/BLUEBONNET Louisiana Fair 1978 30.8 m 15,539
KCS RR/JONES ST Louisiana Poor 1954 578.8 m 15,401

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.