Total Bridges
12,699
Public highway bridges in Louisiana
State profile · Above national median SD
Louisiana bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Louisiana — drawn straight from the FHWA National Bridge Inventory.
- 12,699
- Public bridges
- 36.2%
- Good condition
- 11.0%
- Poor condition
- 11.0%
- Structurally deficient
Good Condition
36.2%
4,603 bridges rated 7-9
-13.8pp vs 50% benchmark
Poor Condition
11.0%
1,397 bridges rated 0-4
Structurally Deficient
11.0%
1,397 bridges flagged for repair priority
4.0pp vs national avg 7.0%
Louisiana vs national bridge condition
Louisiana — Good condition share 36.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Louisiana — Structurally deficient share 36.7%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Louisiana (FHWA NBI)
Counties (64)
Acadia 282 Allen 178 Ascension 216 Assumption 68 Avoyelles 147 Beauregard 221 Bienville 190 Bossier 270 Caddo 682 Calcasieu 463 Caldwell 124 Cameron 58 Catahoula 70 Claiborne 148 Concordia 42 De Soto 201 East Baton Rouge 548 East Carroll 55 East Feliciana 133 Evangeline 156 Franklin 131 Grant 209 Iberia 143 Iberville 80 Jackson 163 Jefferson 379 Jefferson Davis 240 LaSalle 195 Lafayette 323 Lafourche 130 Lincoln 171 Livingston 253 Madison 104 Morehouse 136 Natchitoches 313 Orleans 382 Ouachita 337 Plaquemines 34 Pointe Coupee 50 Rapides 523 Red River 63 Richland 207 Sabine 195 St. Bernard 47 St. Charles 82 St. Helena 139 St. James 26 St. John the Baptist 40 St. Landry 317 St. Martin 116 St. Mary 124 St. Tammany 360 Tangipahoa 477 Tensas 52 Terrebonne 215 Union 121 Vermilion 261 Vernon 341 Washington 285 Webster 194 West Baton Rouge 73 West Carroll 88 West Feliciana 108 Winn 220
Louisiana vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Louisiana on the same metric.
42
Pennsylvania
10.50% top marginal rate
38
North Dakota
10.84% top marginal rate
22
Louisiana
11.00% top marginal rate
72
Puerto Rico
11.98% top marginal rate
23
Maine
13.23% top marginal rate
Bridges Needing Most Attention in Louisiana
Six lowest-condition bridges in Louisiana, ranked by composite NBI rating. Each is inspected at least every 24 months.
Layton Coco Xing
Structurally DeficientOver: BAYOU DES GLAISES
0.01 MI. EAST OF LA 451, Avoyelles, LA
Built 1986 Load: 0.9 t ADT: 40
LA1077
Structurally DeficientOver: BLACK BAYOU
1.1 M S OF LA 22, St. Tammany, LA
Built 1965 Load: 0.9 t ADT: 1,019
LA0308
Structurally DeficientOver: BAYOU LAFOURCHE
.01 MI NORTH OF LA 1, Lafourche, LA
Built 1970 Load: 1.0 t ADT: 5,198
Ebeneezer Tap Rd
PoorOver: JONES CREEK
0.65 Mi South of LA 500, LaSalle, LA
Built 1989 Load: 1.2 t ADT: 300
Anderson Rd
Structurally DeficientOver: HYDE BR.
2 MI S OF 1054 & 440, Tangipahoa, LA
Built 1960 Load: 1.2 t ADT: 25
Stubblefield Rd
PoorOver: BAYOU ROUGE
APPROX. 1 M. S. OF LA 361, Avoyelles, LA
Built 1975 Load: 2.3 t ADT: 40
All Bridges in Louisiana
US0165
FairOver: BAYOU CLEAR
0.47 MI. SOUTH OF LA 3265, Rapides, LA
Built 1994 Load: 39.9 t ADT: 10,670
US0165
FairOver: BAYOU BOEUF
3.86 MI. NORTH OF LA 3265, Rapides, LA
Built 1994 Load: 39.9 t ADT: 6,729
US0165
FairOver: DIVERSION CANAL
5.87 MI. NORTH OF LA 3265, Rapides, LA
Built 1994 Load: 39.9 t ADT: 6,729
US0165
FairOver: PECAN BAYOU
6.57 MI. NORTH OF LA 3265, Rapides, LA
Built 1994 Load: 39.9 t ADT: 10,946
I0049
FairOver: BAYOU BOEUF RELIEF
2.94 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 39.9 t ADT: 24,080
I0049
FairOver: BAYOU BOEUF RELIEF
2.94 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 39.9 t ADT: 11,969
I0049
FairOver: TURTLE BAYOU
4.22 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 39.9 t ADT: 24,080
I0049
FairOver: TURTLE BAYOU
4.22 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 39.9 t ADT: 11,969
I0049
FairOver: COPENHAGEN SLOUGH
5.33 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 39.9 t ADT: 24,080
LA0784
FairOver: CREEK
2.62M EAST OF US71-US84, Red River, LA
Built 1991 Load: 39.9 t ADT: 626
LA0137
FairOver: BEOUF CUT OFF
2.6 MI NORTH OF US 80, Richland, LA
Built 1971 Load: 39.9 t ADT: 1,954
I0020
FairOver: OLD B LAFOURCHE
4.2 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 39.9 t ADT: 38,890
I0020
FairOver: OLD B LAFOURCHE
4.2 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 39.9 t ADT: 16,997
WADE RD
FairOver: CYPRESS CREEK
LOGMILE 0.12 FROM 461, Richland, LA
Built 1995 Load: 39.9 t ADT: 60
CHARLES COURT
FairOver: 20 ARPENT CANAL
1.0 MI N-NE OF LA 39, St. Bernard, LA
Built 1960 Load: 39.9 t ADT: 147
LA0010-S
FairOver: RABY BRANCH
0.5M EAST OF LA 43, St. Helena, LA
Built 1959 Load: 39.9 t ADT: 225
US0190
FairOver: BAYOU CALAHAN
0.2 MI EAST OF LA 749, St. Landry, LA
Built 1931 Load: 39.9 t ADT: 20,603
I0049
FairOver: Bayou Carencro
2.10 Mi S of LA 93, St. Landry, LA
Built 1979 Load: 39.9 t ADT: 2,967
I0049
FairOver: BAYOU BOURBEAU
2.5 MI N of LA 93, St. Landry, LA
Built 1980 Load: 39.9 t ADT: 1,317
I0049
FairOver: BAYOU BOURBEAU
2.05 Mi S of LA 3233, St. Landry, LA
Built 1980 Load: 39.9 t ADT: 1,165
LA0356
FairOver: BAYOU BOUDREAUX
3.0 MI E of LA 95, St. Landry, LA
Built 1967 Load: 39.9 t ADT: 466
LA0182
FairOver: LASALLE COULEE
0.23 MI N of LA 92-1, St. Martin, LA
Built 1931 Load: 39.9 t ADT: 14,501
LA0087
FairOver: CHARENTON CANAL
0.5 MI WEST OF LA 326, St. Mary, LA
Built 1999 Load: 39.9 t ADT: 883
US0190-B
FairOver: DRAIN CANAL
LA US 190, St. Tammany, LA
Built 1988 Load: 39.9 t ADT: 2,496
LA0021
FairOver: BAYOU DEZEIRE
0.3 M S OF LA 1077, St. Tammany, LA
Built 1978 Load: 39.9 t ADT: 6,406
I0055-S
FairOver: OWL BAYOU
Owl Bayou, Tangipahoa, LA
Built 1958 Load: 39.9 t ADT: 4,107
I0055
FairOver: LITTLE NAT RIVER
I0055, Tangipahoa, LA
Built 1968 Load: 39.9 t ADT: 21,736
I0012
FairOver: SELSERS CREEK
I0012, Tangipahoa, LA
Built 1975 Load: 39.9 t ADT: 53,386
I0012
FairOver: SELSERS CREEK
I0012, Tangipahoa, LA
Built 1975 Load: 39.9 t ADT: 17,665
DEAN HAILE RD
FairOver: FINCH BAYOU
1.2 MILES NORTH OF LA 143, Union, LA
Built 2014 Load: 39.9 t ADT: 312
LA0033
FairOver: BAYOU DARBONNE
1.2 MI NORTH OF LA 15, Union, LA
Built 1963 Load: 39.9 t ADT: 10,540
Prairie Rd
FairOver: SEVENTH WARD CANAL
2.3 Mi N of Community Rd, Vermilion, LA
Built 2010 Load: 39.9 t ADT: 241
Lopez Rd
FairOver: COULEE
0.72 MI. W. OF LA 89, Vermilion, LA
Built 2012 Load: 39.9 t ADT: 400
LA0010
FairOver: BUNDICK CREEK
1.2 MI EAST OF LA 467, Vernon, LA
Built 1985 Load: 39.9 t ADT: 1,934
LA0164
FairOver: DORCHEAT BAYOU RELIEF
5.48 MI E. OF LA 163, Webster, LA
Built 2004 Load: 39.9 t ADT: 3,472
Wiley Rd
FairOver: INDIAN CREEK
0.5M SE OF LA 2, Webster, LA
Built 1992 Load: 39.9 t ADT: 58
I0010
FairOver: BAYOU CHOCTAW
I0010, West Baton Rouge, LA
Built 1974 Load: 39.9 t ADT: 41,644
LA0585
FairOver: TIGER BAYOU
6.3 MI NORTH OF LA 879, West Carroll, LA
Built 1978 Load: 39.9 t ADT: 584
LA0126
FairOver: CANEY CREEK
3.7 MILES EAST OF LA 505, Winn, LA
Built 1992 Load: 39.9 t ADT: 693
LA0126
FairOver: BIG CREEK RELIEF
.8 MI EAST OF LA 1234, Winn, LA
Built 1992 Load: 39.9 t ADT: 742
LA0126
FairOver: FLAT CREEK
0.29 MILE EAST OF LA 127, Winn, LA
Built 1978 Load: 39.9 t ADT: 498
LA0124
FairOver: POPE CREEK
5.97 MI EAST OF US 84, Winn, LA
Built 1929 Load: 39.9 t ADT: 1,348
Keithvil-Kingston
FairOver: CYPRESS BAYOU
1.7 MILES EAST OF US 171, Caddo, LA
Built 2007 Load: 40.2 t ADT: 100
TROSCLAIR RD.
FairOver: CREOLE CANAL
.01 MI W of LA 82, Cameron, LA
Built 2006 Load: 40.2 t ADT: 334
SILOAM CHURCH RD
FairOver: BIG CREEK
1.5 MI EAST of LA 809, Jackson, LA
Built 1986 Load: 40.2 t ADT: 48
LYNNETTE DR.
FairOver: SONIAT CANAL
0.02 MI E OF VEGAS DR., Jefferson, LA
Built 2004 Load: 40.2 t
Chemin Metairie
FairOver: Parc Perdu Bayou
0.50 Mi W of La 89, Lafayette, LA
Built 2008 Load: 40.2 t ADT: 2,336
Booker Fowler Rd
FairOver: INDIAN CREEK
1.29 MILES SE OF US 165, Rapides, LA
Built 2005 Load: 40.2 t ADT: 150
Rogers Rd
FairOver: YELLOW WATER RIVER
0.3 N OF US 190 & I-55 ON, Tangipahoa, LA
Built 1998 Load: 40.2 t ADT: 1,372
W. Black cat Rd
FairOver: PONCHATOULA CREEK
BLACK CAT ROAD, Tangipahoa, LA
Built 1992 Load: 40.2 t ADT: 873
Showing 5,601-5,650 of 12,699 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |