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
US0167
FairOver: COULEE ILE DES CANNES
2.54 Mi SW of LA 733, Lafayette, LA
Built 1984 Load: 40.8 t ADT: 34,104
E KENTUCKY AVE
FairOver: COLVIN CREEK
0.65 MI E OF US 167, Lincoln, LA
Built 2017 Load: 40.8 t ADT: 4,527
LA0507
FairOver: DUGDEMONA RIVER
2.72 MI N BIENVILLE PAR, Lincoln, LA
Built 1986 Load: 40.8 t ADT: 868
LA1036
FairOver: BEAR CREEK
1.1 M N OF LA 442, Livingston, LA
Built 1980 Load: 40.8 t ADT: 601
I0020
FairOver: M. P. RR
.4 MI WEST OF US 65, Madison, LA
Built 1975 Load: 40.8 t ADT: 31,481
LA0133
FairOver: BAYOU LAFOURCHE
MOREHOUSE/RICHLAND LINE, Morehouse, LA
Built 1992 Load: 40.8 t ADT: 1,954
LA0590
FairOver: BAYOU
0.94 MI E of ELVIN ROAD, Morehouse, LA
Built 1986 Load: 40.8 t ADT: 85
LA0590
FairOver: CHEMIN-A-HAUL BAYOU
1.5 Mi. W. of LA 591, Morehouse, LA
Built 1986 Load: 40.8 t ADT: 85
LA0590
FairOver: BAYOU
1.33 MI E of ELVIN ROAD, Morehouse, LA
Built 1986 Load: 40.8 t ADT: 85
LA0480
FairOver: SIMS BAYOU
3.7 MI. W OF INT LA3163, Natchitoches, LA
Built 1982 Load: 40.8 t ADT: 913
LA1226
FairOver: BLACK LAKE BAYOU
2.0 MI. N OF INT LA1227, Natchitoches, LA
Built 1981 Load: 40.8 t ADT: 495
I0049
FairOver: BARBUE BAYOU TRIB.
2.47 MI. NORTH OF LA 490, Natchitoches, LA
Built 1984 Load: 40.8 t ADT: 18,305
I0049
FairOver: BARBUE BAYOU TRIB.
2.47 MI. NORTH OF LA 490, Natchitoches, LA
Built 1984 Load: 40.8 t ADT: 28,142
I0049
FairOver: COMITTE BAYOU
1.04 MI. SOUTH OF LA 119, Natchitoches, LA
Built 1984 Load: 40.8 t ADT: 28,142
I0049
FairOver: THOMPSON CREEK
0.16 MI. NORTH OF LA 174, Natchitoches, LA
Built 1985 Load: 40.8 t ADT: 16,334
LA0504
FairOver: RIO-HONDO-CREEK
3.46 MI. N OF INT LA6, Natchitoches, LA
Built 1979 Load: 40.8 t ADT: 1,737
US0090
FairOver: US 90, HOWARD AVE, RAMPS
0.1 MI NW OF US 90, Orleans, LA
Built 1960 Load: 40.8 t ADT: 7,620
I0610
FairOver: ORLEANS AVE/OUTFALL CANA
1.2 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 40.8 t ADT: 105,572
I0010
FairOver: CITY STREETS
.37 MI EAST OF US 90, Orleans, LA
Built 1960 Load: 40.8 t ADT: 5,927
I0010
FairOver: ST. BERNARD AVE OFF RAMP
2.3 MI EAST OF US 90, Orleans, LA
Built 1968 Load: 40.8 t ADT: 17,605
I0010
FairOver: DRAIN CANAL
6.8 MI EAST OF I-510, Orleans, LA
Built 1967 Load: 40.8 t ADT: 77,962
I0020
FairOver: BLACK BAYOU (FRONTAGE RD
1.0 MI EAST OF LA 617, Ouachita, LA
Built 1986 Load: 40.8 t ADT: 60,145
I0020
FairOver: YOUNGS BAYOU
.7 MI EAST OF LA 594, Ouachita, LA
Built 1965 Load: 40.8 t ADT: 84,225
I0020
FairOver: YOUNGS BAYOU
.7 MI EAST OF LA 594, Ouachita, LA
Built 1965 Load: 40.8 t ADT: 66,061
I0020
FairOver: BENNETT BAYOU
5.5 MI EAST OF US 165, Ouachita, LA
Built 1968 Load: 40.8 t ADT: 43,420
GOURD BAYOU RD
FairOver: YOUNGS BAYOU
2.5 MI S.MONROE, Ouachita, LA
Built 1984 Load: 40.8 t ADT: 278
US0165
FairOver: BAYOU BOEUF
3.86 MI. NORTH OF LA 3265, Rapides, LA
Built 1993 Load: 40.8 t ADT: 8,811
US0165
FairOver: DIVERSION CANAL
5.87 MI. NORTH OF LA 3265, Rapides, LA
Built 1993 Load: 40.8 t ADT: 4,850
LA0181
FairOver: DIVERSION CANAL
0.10 MI SOUTH OF I-49, Rapides, LA
Built 1985 Load: 40.8 t ADT: 739
LA0181
FairOver: DIVERSION CANAL
0.10 MI SOUTH OF I-49, Rapides, LA
Built 1985 Load: 40.8 t ADT: 1,624
I0049
FairOver: COPENHAGEN SLOUGH
5.33 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 40.8 t ADT: 11,969
I0049
FairOver: GENE BALL DR., B. ROBERT
6.01 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 40.8 t ADT: 24,080
I0049
FairOver: GENE BALL DR., B. ROBERT
6.01 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 40.8 t ADT: 11,969
US0071
FairOver: BAYOU TOULON
.5 MI NORTH OF LA 514, Red River, LA
Built 1977 Load: 40.8 t ADT: 2,559
LA0137
FairOver: DRY FORK CREEK
2.58 MI NORTH OF LA 877, Richland, LA
Built 1987 Load: 40.8 t ADT: 9,661
LA0137
FairOver: DRY FORK CREEK
2.58 MI NORTH OF LA 877, Richland, LA
Built 1987 Load: 40.8 t ADT: 6,578
LA0137
FairOver: CREEK
1.4 MI NORTH OF LA 584, Richland, LA
Built 1987 Load: 40.8 t ADT: 9,661
LA0137
FairOver: DRY FORK CREEK
1.4 MI NORTH OF LA 584, Richland, LA
Built 1987 Load: 40.8 t ADT: 6,578
I0020
FairOver: DIVERSION CANAL
3.8 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 40.8 t ADT: 38,890
I0020
FairOver: BAYOU CREW
2.8 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 40.8 t ADT: 38,890
I0020
FairOver: BAYOU CREW
2.8 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 40.8 t ADT: 16,997
LA0854
FairOver: BIG CREEK
2.7 MI EAST OF LA 183, Richland, LA
Built 1982 Load: 40.8 t ADT: 529
LA0856
FairOver: BEE BAYOU
.88 MI EAST OF US 425, Richland, LA
Built 1985 Load: 40.8 t ADT: 1,064
LA0046
FairOver: BAYOU LALOUTRE
5.4 MI SOUTH OF LA 1245, St. Bernard, LA
Built 1984 Load: 40.8 t ADT: 2,553
LA0306
FairOver: GRAND BAYOU
2.0 MI SOUTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 370
LA1036
FairOver: SPRING BRANCH
1.0 M SW OF LA 1041, St. Helena, LA
Built 1980 Load: 40.8 t ADT: 601
I0049
FairOver: Bayou Carencro
1.0 MI NORTH OF LA 182, St. Landry, LA
Built 1979 Load: 40.8 t ADT: 2,067
I0049
FairOver: DRAINAGE CANAL
1.90 Mi N of LA 10, St. Landry, LA
Built 1986 Load: 40.8 t ADT: 21,048
I0049
FairOver: DRAINAGE CANAL
10.92 Mi S of LA 29, St. Landry, LA
Built 1986 Load: 40.8 t ADT: 13,540
I0049
FairOver: DRAINAGE CANAL
1.4 MI N OF LA 745, St. Landry, LA
Built 1986 Load: 40.8 t ADT: 21,048
Showing 5,751-5,800 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 |