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
LA0577
FairOver: DRAINAGE CANAL
4.9 MI NORTH OF LA 577, Madison, LA
Built 1972 Load: 39.0 t ADT: 125
LA0599
FairOver: BONNE IDEE
.51 MI EAST OF US 165, Morehouse, LA
Built 1979 Load: 39.0 t ADT: 268
LA0599
FairOver: BAYOU GALION
5.4 MI SOUTH OF LA 1.40, Morehouse, LA
Built 1978 Load: 39.0 t ADT: 268
LA0591
FairOver: BAYOU BARTHOLOMEW
2.31 MI NORTH OF LA 140, Morehouse, LA
Built 1976 Load: 39.0 t ADT: 137
LA0591
FairOver: CREEK
5.11 MI NORTH OF LA 140, Morehouse, LA
Built 1980 Load: 39.0 t ADT: 137
LA0591
FairOver: CREEK
8.63 MI NORTH OF LA 140, Morehouse, LA
Built 1980 Load: 39.0 t ADT: 137
I0049
FairOver: KISATCHIE BAYOU
7.29 MI. NORTH OF LA 119, Natchitoches, LA
Built 1988 Load: 39.0 t ADT: 18,305
I0049
FairOver: KISATCHIE BAYOU
7.29 MI. NORTH OF LA 119, Natchitoches, LA
Built 1988 Load: 39.0 t ADT: 28,142
LA0494
FairOver: CANE RIVER
1.78 MI. N OF INT LA119, Natchitoches, LA
Built 1974 Load: 39.0 t ADT: 18,361
LA3139
FairOver: JEFF/ORLEANS PARISH LINE
5.0 MI EAST OF LA 611-4, Orleans, LA
Built 1982 Load: 39.0 t ADT: 55,872
I0610
FairOver: ON RP FROM FRANKLIN AVE
.8 MI EAST OF LA 3071, Orleans, LA
Built 1969 Load: 39.0 t ADT: 7,620
I0010
FairOver: CITY STREETS
.36 MI EAST OF LA 39, Orleans, LA
Built 1968 Load: 39.0 t ADT: 7,620
I0010
FairOver: READ RD.
3.3 MI EAST OF US 90, Orleans, LA
Built 1973 Load: 39.0 t ADT: 12,699
US0165
FairOver: BAYOU DESIARD
1.25 MI NORTH OF US 80, Ouachita, LA
Built 1976 Load: 39.0 t ADT: 29,759
LA0151
FairOver: CREEK
2.0 MI NORTH OF SOUTH INT, Ouachita, LA
Built 1970 Load: 39.0 t ADT: 2,862
LA0841
FairOver: HALFWAY BAYOU
1.8 MI NORTH OF US 165, Ouachita, LA
Built 1975 Load: 39.0 t ADT: 2,060
LA0841
FairOver: PRAIRIE BAYOU
3.8 MI NORTH OF US 165, Ouachita, LA
Built 1975 Load: 39.0 t ADT: 2,060
LA0488
FairOver: SPRING CREEK
.78 MI. E OF LA1199, Rapides, LA
Built 1958 Load: 39.0 t ADT: 2,343
LA0514
FairOver: LOW CREEK
3.0 MI EAST OF US 71, Red River, LA
Built 1978 Load: 39.0 t ADT: 772
LA0177
FairOver: BAYOU PIERRE
.1 MI EAST OF LA 510, Red River, LA
Built 1982 Load: 39.0 t ADT: 2,878
LA0787
FairOver: LIBERTY CREEK
1.31 MI EAST OF LA 507, Red River, LA
Built 1982 Load: 39.0 t ADT: 198
LA0133
FairOver: STEEP BAYOU
6.57 MI NORTH OF LA 15, Richland, LA
Built 1970 Load: 39.0 t ADT: 867
LA0595
FairOver: CREW LAKE
.55 MI NORTH OF US 80, Richland, LA
Built 1978 Load: 39.0 t ADT: 1,746
LA0854
FairOver: HURRICANE BAYOU
.4 MI EAST OF LA 183, Richland, LA
Built 1980 Load: 39.0 t ADT: 529
LA0584
FairOver: DRAINAGE CANAL
3.7 MI EAST OF LA 135, Richland, LA
Built 1979 Load: 39.0 t ADT: 77
LA0006
FairOver: TOLEDO BEND RES.
3.45 MI WEST OF LA 191, Sabine, LA
Built 1967 Load: 39.0 t ADT: 3,030
LA0118
FairOver: LYLES CREEK
16.04 MI. EAST OF US 171, Sabine, LA
Built 1982 Load: 39.0 t ADT: 1,471
LA0010
FairOver: NATALBANY CREEK
5.95 MI. EAST OF LA 37, St. Helena, LA
Built 1975 Load: 39.0 t ADT: 1,514
LA0016
FairOver: KILLIAN'S BRANCH
1.75M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 5,293
LA0016
FairOver: LITTLE NATALBANY RIVER
4.9M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 4,942
LA0016
FairOver: NATALBANY RIVER RELIEF
5.2M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 4,942
LA0016
FairOver: NATALBANY RIVER
5.4M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 39.0 t ADT: 4,942
US0190
FairOver: FAIRWAY DRIVE OVERPASS
US 190 LOG MI 4.62, St. Tammany, LA
Built 1987 Load: 39.0 t ADT: 27,870
US0190
FairOver: FAIRWAY DRIVE OVERPASS
US 190 LOG MI 4.62, St. Tammany, LA
Built 1987 Load: 39.0 t ADT: 66,360
I0010
FairOver: CANAL
0.4 M N OF US 190, St. Tammany, LA
Built 1966 Load: 39.0 t ADT: 55,785
I0010
FairOver: CANAL
0.4 M N OF US 190, St. Tammany, LA
Built 1966 Load: 39.0 t ADT: 1,600
LA0038
FairOver: TANGIPAHOA RIVER
LA0038, Tangipahoa, LA
Built 1974 Load: 39.0 t ADT: 3,120
LA1061
FairOver: SPRING CREEK
LA1061-2, Tangipahoa, LA
Built 1975 Load: 39.0 t ADT: 1,509
I0012
FairOver: TANGIPAHOA RIVER
I0012, Tangipahoa, LA
Built 1975 Load: 39.0 t ADT: 53,386
LA1054
FairOver: TANGIPAHOA R. RELIEF
0.8 M E OF US 51, Tangipahoa, LA
Built 1983 Load: 39.0 t ADT: 1,235
LA1049
FairOver: BUTTON CREEK
LA1049, Tangipahoa, LA
Built 1973 Load: 39.0 t ADT: 574
LA0892
FairOver: VAN BUREN BAYOU
.01 MI EAST OF LA 3024, Tensas, LA
Built 1976 Load: 39.0 t ADT: 109
LA0888
FairOver: GLADE BAYOU
.85 MI NORTH OF LA 4, Tensas, LA
Built 1972 Load: 39.0 t ADT: 128
LA0024
FairOver: BAYOU TERREBONNE
LA 24, Terrebonne, LA
Built 1975 Load: 39.0 t ADT: 322
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
0.02 MI. E of LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 39.0 t ADT: 259
Showing 5,401-5,450 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 |