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: COULEE
0.8 Mi S of US 90, St. Mary, LA
Over: PONCHATOULA CREEK
US0051, Tangipahoa, LA
Over: NAV. PONCHATOULA
3.3 MI SW OF SR 22 E, Tangipahoa, LA
Over: CREEK
1.2 MI SW/JCT16 PALMETTA, Tangipahoa, LA
Over: DULARGE BAYOU
0001 LOG MI FROM IN, Terrebonne, LA
Over: ST. LOUIS CANAL
0.8 MI E OF LA 24, Terrebonne, LA
Over: BAYOU TERREBONNE
0.01 M W OF LA 24, Terrebonne, LA
Over: COULEE
0.3 MI NORTH OF LA 20, Terrebonne, LA
Over: COULEE KENNY
2.3 MI W. OF LA 343, Vermilion, LA
Over: CREEK
2.5 MI NORTH OF LA 577, West Carroll, LA
Over: Bayou Des Cannes
2.1 Mi. W. Of La 91, Acadia, LA
Over: CREEK
7.3 MI. E OF INT LA 113, Allen, LA
Over: BAYOU BLUE RELIEF
3.5 MI S OF LA 104, Allen, LA
Over: BAYOU BLUE
4.0 MI. N OF US190, Allen, LA
Over: CREEK
2.6 MI EAST OF LA 377, Allen, LA
Over: NEW RIVER
LA0429, Ascension, LA
Over: BLACK BAYOU CANAL
0.6 M E of US 61, Ascension, LA
Over: COWARDS GULLY
3.9 MI. W OF INT LA 389, Beauregard, LA
Over: HOOSIER CREEK
3.8 MI. SE OF US190, Beauregard, LA
Over: BEAR HEAD CREEK
3.1 MI. W OF US190, Beauregard, LA
Over: BEAR HEAD MARSH
2.5 MI. E OF LA27, Beauregard, LA
Over: BECKWITH CREEK RELIEF
2.27 MI. E OF INT LA27, Beauregard, LA
Over: COLE CREEK
7.45 MI. E OF INT LA27, Beauregard, LA
Over: DRAIN
.71 MI NORTH OF LA 2, Bossier, LA
Over: HOLLYWOOD DITCH
200 FT.EAST OF BETHU, Caddo, LA
Over: CLYDE PL VIV RD,BLACK B.
3.3MI S OF LA HWY.17, Caddo, LA
Over: BEAR HEAD CREEK
2.13 MI EAST OF LA 109, Calcasieu, LA
Over: INDIAN BAYOU CANAL
3.0 MI EAST OF LA 27, Calcasieu, LA
Over: DRAIN
0.2 MI N. OF LA 3186, Calcasieu, LA
Over: BAYOU ARCENEAUX
2.3 MI EAST OF LA 27, Calcasieu, LA
Over: BUXTON CREEK
.4 MILES EAST OF LA 27, Calcasieu, LA
Over: CREEK
0.9 MI. N. of LA 389, Calcasieu, LA
Over: DRAIN
1.4 MI EAST OF LA 191, De Soto, LA
Over: B.GRAND CANE RLF
1.7 MI EAST OF LA 191, De Soto, LA
Over: DRAIN BAYOU
.50 MI SOUTH OF BURBANK, East Baton Rouge, LA
Over: WALDEN LAKE
0.1 Mi. S of Walden Rd, East Baton Rouge, LA
Over: DRAIN BAYOU
.20 MI N.SHERWOOD FR.BLVD, East Baton Rouge, LA
Over: CREEK
LOGMI 5.66 FR 037 TO, Franklin, LA
Over: CYPRESS CREEK
NO DATA ENTERED, Grant, LA
Over: GRAY BRANCH
NO DATA ENTERED, Grant, LA
Over: N FORK FISH CREEK
NO DATA ENTERED, Grant, LA
Over: FRIDAY CREEK
LOGMI 1.25 FR 569 TO, Grant, LA
Over: SCHOOL HOUSE BRANCH
LOGMI 0.41 FR 569 TO, Grant, LA
Over: LITTLE SANDY BAYOU
4.25 MI EAST OF LA 1, Grant, LA
Over: Segura Branch Canal
0.5 MI E of US 90 Serv Rd, Iberia, LA
Over: CHOUDRANT CREEK
.4 MI SOUTH OF LA 145, Jackson, LA
Over: SO CHOUDRANT CR
4.05 MI WEST OF LA 144, Jackson, LA
Over: CREEK
.49 MI SOUTH OF LA 813-3, Jackson, LA
Over: BAYOU SEGNETTE
0.5 M NORTH OF LAPALCO, Jefferson, LA
Over: CANAL NO.3
0.005 MI N OF VETERANS B, Jefferson, LA
Showing 1,701-1,750 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.