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: CROSS BAYOU
.7 MI SOUTH OF LA 565, Concordia, LA
Over: MONTE SANO BAYOU
0.3 M W of US 61&LA 67, East Baton Rouge, LA
Over: MONTE SANO BAYOU
0.3 M W of US 61&LA 67, East Baton Rouge, LA
Over: MONTE SANO BAYOU
0.3 M W of US 61&LA 67, East Baton Rouge, LA
Over: MONTE SANO BAYOU
0.3 M W of US 61&LA 67, East Baton Rouge, LA
Over: CYPRESS BAYOU
2.2 M East of LA 67, East Baton Rouge, LA
Over: CYPRESS BAYOU
1.7 M E of LA 67&LA 408, East Baton Rouge, LA
Over: BLACKWATER BAYOU
0.4 Mi. E. of LA 410, East Baton Rouge, LA
Over: GROUND
I-110 / WELLER AVE. INTG., East Baton Rouge, LA
Over: EVAGELINE ST. ON RAMP
I0110, East Baton Rouge, LA
Over: BEACONS GULLY
1.45 MI EAST OF LA 104, Evangeline, LA
Over: ATCHAFALAYA FLOODWAY
3.8 M W of LA 3000, Iberville, LA
Over: TICKFAW RIVER
2.1 MI FR JCT LA444-LA22, Livingston, LA
Over: DRAINAGE
2.8 MI WEST OF LA 577, Madison, LA
Over: LITTLE SANDY CREEK
1.2 MI. EAST OF LA 117, Natchitoches, LA
Over: GROUND
0.05 MI E OF US 90, Orleans, LA
Over: OFF RAMP TO I 610 E
.5 MI EAST OF I-10, Orleans, LA
Over: R/R
0.75M NORTH GULF OUTLET, Orleans, LA
Over: DRAIN TO CYPRESS CREEK
2.1 MI S. HWY. 557, Ouachita, LA
Over: UP RR
5.92 MI. NORTH OF LA 3265, Rapides, LA
Over: UP RAILROAD
1.54 MI. NROTH OF LA 3250, Rapides, LA
Over: LOGGY BAYOU
2.1 MI NORTH OF LA 154, Red River, LA
Over: E.Grolee St/MPRR
3.55 Mi S of LA 744, St. Landry, LA
Over: 6th St.
8.9 MI EAST OF LA 182, St. Mary, LA
Over: RAMP G
0.02 MI SW OF LA 182, St. Mary, LA
Over: PONCHATOULA CR
I0055, Tangipahoa, LA
Over: PONCHATOULA CR.
I0055, Tangipahoa, LA
Over: B TERREBONNE
0.6 MI N OF LA 664, Terrebonne, LA
Over: SWAMP
.09 MI EAST OF LA 3052, Terrebonne, LA
Over: ONRAMP TO 90 FROM 311
0.14 MI W OF LA 311, Terrebonne, LA
Over: OFFRAMP FROM 90 TO 311
0.12 MI W OF LA 311, Terrebonne, LA
Over: BOGUE CHITTO RIVER
LA0438, Washington, LA
Over: KAHNS RD/MO PAC RR
1.0 M S OF LA 1, West Baton Rouge, LA
Over: BRIDES OVER MO PAC RR
1.1 M S of LA 1, West Baton Rouge, LA
Over: BAYOU DES GLAISES
0.15 MI. EAST OF LA 451, Avoyelles, LA
Over: BAYOU DES GLAISES
0.02 MI. EAST OF LA 451, Avoyelles, LA
Over: LAC LONG
1.5 MI. N OF CARDINAL LP., Avoyelles, LA
Over: Drain
0.98 MI. W. OF LA 3 ON SI, Bossier, LA
Over: OCKLEY DITCH
0.2 MI EAST OF LINE AVE., Caddo, LA
Over: CANAL
0.1M E of LA165, Caldwell, LA
Over: CREEK
0.2 MI NW OF REED RD, Caldwell, LA
Over: BOGGY BAYOU
LOGMI 1.3 E OF LA129, Concordia, LA
Over: DRAIN CREEK
1 MI. W. OF LA 67, East Feliciana, LA
Over: TURKEY CREEK
LOGMI 3.56 FR 137 TO ODE, Franklin, LA
Over: DEER CREEK
0.01M FROM 496 TO 527, Franklin, LA
Over: CREEK
.54 MI W of Frnch Trn Rd, Franklin, LA
Over: TURKEY CREEK
1.96 mi. S of LA 132, Franklin, LA
Over: WHEAT BRANCH
1.38 M N OF N JCT. LA 123, Grant, LA
Over: DYSON CREEK
1.6 M. W. OF US 165, Grant, LA
Over: DRAINAGE CANAL
2.7 MI. NORTH OF LA 77 EN, Iberville, LA
Showing 8,801-8,850 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.