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: E.FORK OF SHETTLEWORTH B
1.4 MI. EAST OF LA 169, Caddo, LA
Over: MAHLIN BAYOU
2.3 MI S OF INT W HW, Caddo, LA
Over: TRIBUTARY TO MAHLIN BAYO
1.2 MI S OF INT W HW, Caddo, LA
Over: JEEMS BAYOU
2 MI S OF INT OF LA HWY 2, Caddo, LA
Over: BLACK BAYOU TRIB
0.3M SE OF LA 170, Caddo, LA
Over: ALLIGATOR BAYOU
1.3M EAST OF LA 3049, Caddo, LA
Over: GRAY BRANCH
0.75 MI EAST OF LA 1, Caddo, LA
Over: TRIBUTARY TO KELLY BAYOU
1.6 MI S OF INT 531, Caddo, LA
Over: HARTMAN BRANCH
0.75M W OF US 71, Caddo, LA
Over: E.FORK OF STATELINE CREE
0.5 M E. OF LA HWY 1, Caddo, LA
Over: BARDSTOWN BAYOU
2.0 MI EAST OF US 71, Caddo, LA
Over: STATE LINE CREEK TRIB
1.2 M EAST OF LA 1, Caddo, LA
Over: VIDALIA CANAL
10.54 MI NORTH OF LA 565, Concordia, LA
Over: RED BAYOU CANAL
13.69 MI NORTH OF LA 565, Concordia, LA
Over: DALRYMPLE DR/CITY PK LAK
I0010, East Baton Rouge, LA
Over: UNNAMED STREAM
0.4 MI. SOUTH OF LA 956, East Feliciana, LA
Over: SANDY CREEK
NO DATA ENTERED, Grant, LA
Over: INDIAN CREEK
LOGMI 1.80 FR 569 TO, Grant, LA
Over: CREEK
6.93 MI WEST OF LA 146, Jackson, LA
Over: GARRETT CREEK
0.9 Mi. South of LA 4, Jackson, LA
Over: AMES CANAL
0.3 MI.W OF AMES BL, Jefferson, LA
Over: CANAL
4.2 M N of LA 14, Jefferson Davis, LA
Over: ANSEIM COUIEE
1.2 MI EAST OF LA 733, Lafayette, LA
Over: DES POCHES COULEE
0.8 Mi SW of US 90, Lafayette, LA
Over: ILE DES CANNES COULEE
1 Mi North of Congress St, Lafayette, LA
Over: WEST COLYELL CR.
0.7 M E OF LA 1027, Livingston, LA
Over: VALENTINE BRANCH
NO DATA ENTERED, Rapides, LA
Over: CHATLIN-LAKE-CANAL
4.34 MI. NE OF US 71, Rapides, LA
Over: CREEK
2.36 MI. W OF US71, Rapides, LA
Over: BAYOU TESSON
0.3 Mi W. of La 182, St. Landry, LA
Over: CANAL
0.7 MI EAST OF 190 B, St. Tammany, LA
Over: LITTLE BLACK BAYOU
0.008 MI S OF LA 311, Terrebonne, LA
Over: LITTLE BLACK BAYOU
0001 LOG MI FROM INT, Terrebonne, LA
Over: COMRADE CREEK
7.14 MI. NORTH OF LA 111, Vernon, LA
Over: CREEK
NO DATA ENTERED, Winn, LA
Over: SALINE BAYOU
1.5 MI E JCT LA 1226, Winn, LA
Over: B WYCOFF
1.1 MI EAST OF LA 367, Acadia, LA
Over: CREEK
1.21 MI EAST OF LA 97, Acadia, LA
Over: BAYOU FRANCOIS
LA0022, Ascension, LA
Over: DENHAM CANAL
LA0022, Ascension, LA
Over: LITTLE LAKE RELIEF
1.8 Mi. E. of LA 937, Ascension, LA
Over: BAYOU BOEUF
0.1 MILE NORTH OF LA 1176, Avoyelles, LA
Over: CYPRESS CREEK
6.8 MI. S OF INT US190, Beauregard, LA
Over: PULLEM CREEK
2.85 MI. S OF INT US190, Beauregard, LA
Over: HOOSIER CREEK
1.95 MI. S OF INT US190, Beauregard, LA
Over: WEST RELIEF
0.5 MI E of US 171, Beauregard, LA
Over: FLAT CREEK
0.6 MI E of US 171, Beauregard, LA
Over: WEST RELIEF
0.5 MI E of LA 1146, Beauregard, LA
Over: CREEK
0.6 MI E of LA 1146, Beauregard, LA
Over: BUNDICK CREEK
0.7 MI E of LA 1146, Beauregard, LA
Showing 2,051-2,100 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.