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
LA0112
GoodOver: ROARING CANAL
5.21 MI. WEST OF US 165, Rapides, LA
Built 1993 Load: 40.8 t ADT: 1,268
LA0457
GoodOver: RATTLE SNAKE BAYOU
2.71 MI. NE OF US 71, Rapides, LA
Built 1993 Load: 40.8 t ADT: 806
LA0457
GoodOver: POMPEY BAYOU
3.24 MI. NE OF US 71, Rapides, LA
Built 1993 Load: 40.8 t ADT: 806
LA0113
GoodOver: CALCASIEU RIVER RELIEF
3.06 MI. E OF INT LA112, Rapides, LA
Built 1981 Load: 40.8 t ADT: 2,071
LA0116
GoodOver: THORNY BRANCH
2.04 MI NE JCT US 165, Rapides, LA
Built 1983 Load: 40.8 t ADT: 6,942
LA0116
GoodOver: BEAVER CREEK
5.28 MI E JCT US 165, Rapides, LA
Built 1983 Load: 40.8 t ADT: 6,942
LA0116
GoodOver: BEAVER CREEK RELIEF
5.47 MI E JCT US 165, Rapides, LA
Built 1983 Load: 40.8 t ADT: 6,942
LA0116
GoodOver: MILL CREEK RELIEF
6.33 MI E JCT US 165, Rapides, LA
Built 1983 Load: 40.8 t ADT: 6,942
LA0116
GoodOver: MILL CREEK RELIEF
6.6 MI EAST US 165, Rapides, LA
Built 1986 Load: 40.8 t ADT: 6,942
I0049
GoodOver: DRAINAGE CANAL
2.08 MILE SOUTH OF LA 181, Rapides, LA
Built 1985 Load: 40.8 t ADT: 20,572
I0049
GoodOver: DRAINAGE CANAL
2.08 MILES SOUTH OF LA181, Rapides, LA
Built 1986 Load: 40.8 t ADT: 11,969
I0049
GoodOver: GROUND
I-49 / LA 3250 INTG., Rapides, LA
Built 1993 Load: 40.8 t ADT: 15,642
LA0497
GoodOver: SPRING CREEK
2.02 MI. N OF US165, Rapides, LA
Built 1984 Load: 40.8 t ADT: 1,135
LA0497
GoodOver: BARBER CREEK
2.15 MI. N OF US165, Rapides, LA
Built 1984 Load: 40.8 t ADT: 1,135
US0171
GoodOver: PHILLIPS CREEK
0.51 MI. SOUTH OF LA 175, Sabine, LA
Built 1985 Load: 40.8 t ADT: 10,204
US0171
GoodOver: HARPOON BAYOU RELIEF
0.28 MI. SOUTH OF LA 175, Sabine, LA
Built 1985 Load: 40.8 t ADT: 10,204
US0171
GoodOver: HARPOON BAYOU
0.08 MI. SOUTH OF LA 175, Sabine, LA
Built 1985 Load: 40.8 t ADT: 10,204
LA0175
GoodOver: BAYOU-SCIE
5.54 MI. NORTH OF LA 1216, Sabine, LA
Built 1981 Load: 40.8 t ADT: 1,786
LA0174
GoodOver: HORSE HEAD CREEK
.27 M E OF W JCT. LA 483, Sabine, LA
Built 1983 Load: 40.8 t ADT: 1,099
LA0174
GoodOver: LOST BAYOU
2.07 M E OF E JCT. LA 483, Sabine, LA
Built 1983 Load: 40.8 t ADT: 1,099
LA0174
GoodOver: DAW BRANCH
2.82 MI. WEST OF LA 175, Sabine, LA
Built 1983 Load: 40.8 t ADT: 1,099
LA0174
GoodOver: SAN MIGUEL BAYOU
2.57 MI. WEST OF LA 175, Sabine, LA
Built 1983 Load: 40.8 t ADT: 1,099
LA0174
GoodOver: SAN MIGUEL BAYOU
.25 MI EAST OF LA 175, Sabine, LA
Built 1983 Load: 40.8 t ADT: 665
LA0473
GoodOver: AUTHUR CREEK
1.2 MI EAST OF LA 191, Sabine, LA
Built 1986 Load: 40.8 t ADT: 738
LA0473
GoodOver: LAKE CREEK
4.3 MI EAST OF LA 191, Sabine, LA
Built 1986 Load: 40.8 t ADT: 738
LA0306
GoodOver: DRAIN CANAL
2.1 MI NORTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 1,596
LA0306
GoodOver: DRAIN CANAL
.6 MI NORTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 1,596
LA0306
GoodOver: DRAIN CANAL
1.2 MI SOUTH OF LA 632, St. Charles, LA
Built 1984 Load: 40.8 t ADT: 1,596
LA3127
GoodOver: SAINT JAMES CANAL
7.4 M EAST OF LA 70&3127, St. James, LA
Built 1989 Load: 40.8 t ADT: 6,703
US0190
GoodOver: BAYOU DES CANNES
2.12 Mi E of LA 3068, St. Landry, LA
Built 1990 Load: 40.8 t ADT: 3,310
I0049
GoodOver: BAYOU COCODRIE
2.96 Mi S of LA 29, St. Landry, LA
Built 1987 Load: 40.8 t ADT: 13,540
I0012
GoodOver: BAYOU LIBERTY
I0012, St. Tammany, LA
Built 1972 Load: 40.8 t ADT: 78,365
I0012
GoodOver: BAYOU LIBERTY
I0012, St. Tammany, LA
Built 1972 Load: 40.8 t ADT: 29,236
I0012
GoodOver: TANGIPAHOA RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 53,386
I0012
GoodOver: TANGIPAHOA RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 17,665
I0012
GoodOver: TANGIPAHOA RIVER RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 17,665
LA0443
GoodOver: TANGIPAHOA RIVER RELIEF
1.2 mi NE of LA 1064, Tangipahoa, LA
Built 1986 Load: 40.8 t ADT: 6,478
LA3234
GoodOver: YELLOW WATER CREEK
1.35 MI EAST I-55 INTER, Tangipahoa, LA
Built 1995 Load: 40.8 t ADT: 18,303
FINA ROAD
GoodOver: CROSS BAYOU
CROSS BAYOU, Tensas, LA
Built 1997 Load: 40.8 t ADT: 20
LA0128
GoodOver: SADDLE TREE LAKE
0.20 M N of LA 128, Tensas, LA
Built 1990 Load: 40.8 t ADT: 549
LA0020
GoodOver: DRAINAGE CANAL
7.1 MI E OF LA 182, Terrebonne, LA
Built 1984 Load: 40.8 t ADT: 3,696
CECIL CREEK ROAD
GoodOver: CECIL CREEK
SEC 6 T22N R3E, Union, LA
Built 2005 Load: 40.8 t ADT: 3
S. GAS LINE RD.
GoodOver: CUT-OFF CREEK
2 MI S OF MAINT FACILITY, Union, LA
Built 2005 Load: 40.8 t ADT: 3
S. GAS LINE RD.
GoodOver: CECIL CREEK (BIG LAKE)
SEC 31 T22N R3E, Union, LA
Built 2005 Load: 40.8 t ADT: 10
LA0015
GoodOver: TEN MILE CREEK
3.0 MI WEST OF LA 558, Union, LA
Built 1981 Load: 40.8 t ADT: 651
LA0010
GoodOver: HOGPEN BRANCH
.2 MI EAST OF LA 467, Vernon, LA
Built 1985 Load: 40.8 t ADT: 1,934
Sub Regional Parkw
GoodOver: Drainage Creek
0.2 Mi E of La 467, Vernon, LA
Built 2021 Load: 40.8 t ADT: 200
US0171
GoodOver: FLAT CREEK
.1 MI SOUTH OF LA 3226, Vernon, LA
Built 1981 Load: 40.8 t ADT: 14,420
US0171
GoodOver: FLAT CREEK
.1 MI SOUTH OF LA 3226, Vernon, LA
Built 1979 Load: 40.8 t ADT: 14,458
US0171
GoodOver: PRAIRIE CREEK
1.59 M. N. OF N. JCT. LA, Vernon, LA
Built 1986 Load: 40.8 t ADT: 9,417
Showing 10,101-10,150 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 |