Total Bridges
12,699
Public highway bridges in Louisiana
State profile · Above median Poor share
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Louisiana, based on the FHWA National Bridge Inventory.
Data updated May 2026
Total Bridges
12,699
Public highway bridges in Louisiana
Good Condition
36.2%
4,603 bridges rated 7-9
-13.8pp vs 50% benchmark
Poor Condition
11.0%
1,397 bridges whose lowest applicable component is rated 0-4
4.0pp vs national avg 7.0%
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Adjacent states by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Louisiana on the same metric.
PA
ND
LA
PR
ME
Six lowest-condition bridges in Louisiana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
Over: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Over: BLACK BAYOU
1.1 M S OF LA 22, St. Tammany, LA
Over: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Over: JONES CREEK
0.65 Mi South of LA 500, LaSalle, LA
Over: HYDE BR.
2 MI S OF 1054 & 440, Tangipahoa, LA
Over: BAYOU ROUGE
APPROX. 1 M. S. OF LA 361, Avoyelles, LA
Over: LIBERTY CREEK
1.16 MI. NORTH OF LA 8, Vernon, LA
Over: LITTLE BAYOU SARA
LA0066, West Feliciana, LA
Over: LYONS POINT GULLY
0.91M FROM LA 3007, Acadia, LA
Over: Lyons Point Gully
0.5 Mi. S. of La 3007, Acadia, LA
Over: Lyons Point Gully
0.25 Mi E of La 3007, Acadia, LA
Over: Lyons Point Gully
0.7 Mi. N. of LA 3007, Acadia, LA
Over: KINDER DITCH
6.6 MI N of LA-102, Allen, LA
Over: BAYOU DES GLAISES
0.76 M. W. OF JCT LA 451, Avoyelles, LA
Over: SALINE BAYOU TRIB
0.4 M SOUTH OF US 80, Bienville, LA
Over: Spring Branch
.02 MI E OF FV POINT RD., Bossier, LA
Over: CYPRESS BAYOU
3.7 MI SOUTH OF LA 526, Caddo, LA
Over: JEFERSON PAGE,TRY CROSS
1.5 MI. WEST OF U.S., Caddo, LA
Over: COON GULLY
0.2 M N of LA 379, Calcasieu, LA
Over: OUACHITA RIVER @ COLUMBI
0.48 M S of LA 4, Caldwell, LA
Over: GREER CREEK
1.0 MI. OF LA. 9, Claiborne, LA
Over: CALDWELL B.
3.3 MI SE OF LA 17S, De Soto, LA
Over: DRAIN CANAL
0.5 M N OF COURSEY BLVD, East Baton Rouge, LA
Over: CREEK
1.1 Mi. E of US 167, Jackson, LA
Over: MISSISSIPPI RIVER
.01 MI SOUTH OF LA 48, Jefferson, LA
Over: KEYHOLE CANAL
.15 SO OF W.B. EXPWY., Jefferson, LA
Over: YANKEE BAYOU
0.06 MI SE OF LA 308, Lafourche, LA
Over: YANKEE BAYOU
0.06 MI S. OF LA 308, Lafourche, LA
Over: BIG BRANCH
2.7 M W OF LA 441, Livingston, LA
Over: BAYOU BONNE IDEE
0.5 MI S of LA 599, Morehouse, LA
Over: CABIN CREEK
7.66 MI. N OF INT LA9, Natchitoches, LA
Over: WILDERS CREEK
3 MILES NE OF CADEVILLE, Ouachita, LA
Over: DOULLUT CANAL
0.6 MILES SOUTH OF OAK LA, Plaquemines, LA
Over: DRAIN
1.1 MI EAST OF LA 583, Richland, LA
Over: RESERVOIR
.28 MI NORTH OF LA 854, Richland, LA
Over: DRY CREEK
14.06 MI. EAST OF US 171, Sabine, LA
Over: DU LARGE BAYOU
0001 LOG MI FROM IN, Terrebonne, LA
Over: PELTON BAYOU
0.01 MI N OF LA 57, Terrebonne, LA
Over: MILL CREEK
5.8 MI. NW INT. 209, Union, LA
Over: COLEWA BAYOU
2.5 MI N of LA 2, West Carroll, LA
Over: Turkey Creek
0.34 Mi W of Glenmora Rd, Evangeline, LA
Over: BAYOU BLUE
8 MI NORTH OF LA 319, Iberia, LA
Over: SNELL'S CANAL
0.17 MI. N. OF LA 621, Ascension, LA
Over: BAYOU LAFOURCHE
DONALDSONVILLE, Ascension, LA
Over: BAYOU LAFOURCHE @ MUNSON
LA0402, Assumption, LA
Over: DRAIN
0.8 MI W of LA 1256, Calcasieu, LA
Over: DRAIN TO CYPRESS BAYOU
1.6 MI. SW. INT. 336, Jackson, LA
Over: MAIN CANAL
0.7 MI S OF US 90 BUS., Jefferson, LA
Over: CRAWFISH CANAL
1.0 M NW OF US 90, Jefferson, LA
Over: VERMILION RIVER
0.3 MI S. OF US 90BUS, Lafayette, LA
Over: VERMILION RIVER
2.34 Mi N of LA 339, Lafayette, LA
Over: US165 NB RAMP FROM I20 W
I-20/US 165 INTERCHANGE, Ouachita, LA
Over: SOUTH CHENIERE CR
0.5 MI SOUTH of LA 34, Ouachita, LA
Over: BAYOU CHOLPE TRIBUTARY
1.3 M SW Of US 190, Pointe Coupee, LA
Over: CREEK
0.46 MI. N.OF US 165B, Rapides, LA
Over: CREEK
2.0 MI NORTH OF LA 784, Red River, LA
Showing 3,251-3,300 of 12,699 bridges
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.