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
I0210
UnknownOver: LA 14
I-210 OVER LA 14, Calcasieu, LA
ADT: 7,300
I0210
UnknownOver: LEGION STREET(LA1138-2)
1.76 MI EAST OF LA 14, Calcasieu, LA
ADT: 7,300
I0210
UnknownOver: LEGION STREET
1.76 MI EAST OF LA 14, Calcasieu, LA
ADT: 7,300
I0210
UnknownOver: US 90
I-210 OVER US 90, Calcasieu, LA
ADT: 9,900
I0210
UnknownOver: US 90
I-210 OVER US 90, Calcasieu, LA
ADT: 9,900
I0210
UnknownOver: OPELOUSAS STREET
.5 MI EAST OF US 90, Calcasieu, LA
ADT: 5,700
I0210
UnknownOver: OPELOUSAS STREET(LA 3020
.5 MI EAST OF US 90, Calcasieu, LA
ADT: 5,700
FABACHER ROAD
UnknownOver: INTERSTATE 10
4.1 MI N OF LA 108, Calcasieu, LA
ADT: 45,000
CHOUPIQUE ROAD
UnknownOver: I-10
5.2 MI N OF LA 108, Calcasieu, LA
ADT: 45,000
PETE SEAY ROAD
UnknownOver: I-10
1.1 MI S OF US 90, Calcasieu, LA
ADT: 45,000
I0010
UnknownOver: LA 1256
I-10 OVER LA 27, Calcasieu, LA
ADT: 9,750
PRATER ROAD
UnknownOver: RR, I-10
0.9 MI S OF US 90, Calcasieu, LA
ADT: 96,400
I0010
UnknownOver: COLUMBIA SOUTHERN ROAD
.9 MI EAST OF I-210, Calcasieu, LA
ADT: 6,280
I0010
UnknownOver: COLUMBIA SOUTHERN RD
.9 MI EAST OF I-210, Calcasieu, LA
ADT: 6,280
I0010
UnknownOver: CALCASIEU RIVER, RR, STS
2.3 MI E OF I-210, Calcasieu, LA
ADT: 7,410
I0010
UnknownOver: LA 385
I-10 OVER LA 385, Calcasieu, LA
ADT: 14,400
I0010
UnknownOver: LA 385
I-10 OVER LA 385, Calcasieu, LA
ADT: 14,400
I0010
UnknownOver: US 90 & SP RR
I-10 OVER US 90, Calcasieu, LA
ADT: 3,900
I0010
UnknownOver: US 90 & SP RR
I-10 OVER US 90, Calcasieu, LA
ADT: 3,900
I0210
UnknownOver: I210 NB TO I10 WB
I-210 NB TO I-10 WB, Calcasieu, LA
ADT: 65,200
I0210
UnknownOver: I-10
2.1 MI W of LA 397, Calcasieu, LA
ADT: 65,200
GOODMAN RD
UnknownOver: I-10
0.2 MI OF LA 3020, Calcasieu, LA
ADT: 65,200
HUNGERFORD OPS
UnknownOver: I-10
1.9 MI EAST OF LA 397, Calcasieu, LA
ADT: 52,400
LA0108
UnknownOver: I-10
3.0 MILES EAST OF JCT LA, Calcasieu, LA
ADT: 7,780
LA0108
UnknownOver: I-10
3.0 MILES EAST OF JCT LA, Calcasieu, LA
ADT: 7,780
LA3063
UnknownOver: I-10
0.8 MI S OF US 90, Calcasieu, LA
ADT: 51,230
LA0027
UnknownOver: I-10
2.2 MI N of LA 108, Calcasieu, LA
ADT: 77,800
LA0027
UnknownOver: I-10
1.5 MI S OF US 90, Calcasieu, LA
ADT: 77,800
LA0027
UnknownOver: KELSO BAYOU/HACKBERRY
10 MI S OF LA 108, Cameron, LA
ADT: 3,900
LA0082
UnknownOver: MERMENTAU R./G.CHENIER
8.25 MI. S OF INT LA1143, Cameron, LA
ADT: 1,150
MT. ZION RD
UnknownOver: I-49
2.1 MI S OF LA 175, De Soto, LA
ADT: 14,600
LA0509
UnknownOver: LA 509 OVER I-49
LA 509 OVER I-49, De Soto, LA
ADT: 4,900
LA0177
UnknownOver: I-49
LA 177 OVER I-49, De Soto, LA
ADT: 1,250
POWER PLANT RD
UnknownOver: NABARTON ROAD OVER I-49
1.3 MI S OF US 84 INTR., De Soto, LA
ADT: 1,460
I0049
UnknownOver: I-49 OVER US 84
4.85 MI S OF LA 509 INTER, De Soto, LA
ADT: 8,760
I0049
UnknownOver: I-49 OVER US 84
4.84 MI S OF LA 509 INTG, De Soto, LA
ADT: 8,760
SMITHPORT LAKE RD
UnknownOver: I-49
2.81 MI N OF US 84 INTER, De Soto, LA
ADT: 1,680
SLOAN RD
UnknownOver: DESOTO RD 14 OVER I-49
1.43 MI N OF LA 509 INTG, De Soto, LA
ADT: 1,930
Bradshaw Rd.
UnknownOver: I-49
3.78 MI N OF LA 509 INTG, De Soto, LA
ADT: 1,930
I0049
UnknownOver: I-49 OVER LA 175
2.41 MI. NORTH OF LA 5, De Soto, LA
ADT: 11,580
I0049
UnknownOver: I-49 OVER LA 175
2.42 MI. N. OF LA 5, De Soto, LA
ADT: 11,580
I0049
UnknownOver: FRIERSON RD INTERG
5.3 MI N OF LA 175 INTG, De Soto, LA
ADT: 4,150
I0049
UnknownOver: FRIERSON RD INTG
5.3 MI N OF LA 175 INTG, De Soto, LA
ADT: 4,150
PECUE LANE
UnknownOver: I-10
1.0 MI SW OF US 61, East Baton Rouge, LA
ADT: 41,300
I0012
UnknownOver: LA 3245 ONEAL LANE
I-12 OVER LA 3245 ONEAL L, East Baton Rouge, LA
ADT: 27,100
I0010
UnknownOver: ESSEN LANE (LA 3064)
1.3 MILES EAST OF I-10/I-, East Baton Rouge, LA
ADT: 38,100
I-10
UnknownOver: LA 42 highland Rd
6.1 Mi N of LA 73, East Baton Rouge, LA
ADT: 9,398
US0190
UnknownOver: MISSISSIPPI RIVER
1.1 MI W OF US 61, East Baton Rouge, LA
ADT: 2,010
US0061
UnknownOver: LA 73 NORTH
1.33 MI. SOUTH OF I-12, East Baton Rouge, LA
ADT: 16,000
US0061
UnknownOver: US 190-FLORIDA BLVD
US0061, East Baton Rouge, LA
ADT: 25,850
Showing 201-250 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 |