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
US0090-B
UnknownOver: HARVEY CANAL/STS/RR
1.4 MI WEST OF LA 23, Jefferson, LA
ADT: 11,400
US0090-B
UnknownOver: HARVEY CANAL/STS/RR
1.4 MI WEST OF LA 23, Jefferson, LA
ADT: 17,950
US0090-B
UnknownOver: OFF RAMP ST-3
.4 MI WEST OF LA 23, Jefferson, LA
ADT: 8,940
US0090-B
UnknownOver: OFF RAMP LA-1
.4 MI WEST OF LA 23, Jefferson, LA
ADT: 8,940
US0090-B
UnknownOver: RAMP LA-3
.3 MI EAST OF LA 23, Jefferson, LA
ADT: 6,600
US0090-B
UnknownOver: U-TURN #4
.6 MI EAST OF LA 23, Jefferson, LA
ADT: 6,600
US0090-B
UnknownOver: RAMP MA-3
1.0 MI EAST OF LA 23, Jefferson, LA
ADT: 6,600
US0090-B
UnknownOver: RAMP MC-4
2.2 MI EAST OF LA 23, Jefferson, LA
ADT: 6,600
US0090-B
UnknownOver: RAMP MC-3
2.2 MI EAST OF LA 23, Jefferson, LA
ADT: 6,600
US0090-B
UnknownOver: ON RAMP TO US 90 BUS WB
0.05 MI WEST OF LA 45, Jefferson, LA
ADT: 5,410
US0090-B
UnknownOver: U-TURN LANES
.3 MI EAST OF LA 45, Jefferson, LA
ADT: 5,410
LA3046
UnknownOver: LA 3046 OVER US 90
0.04 MI SE OF US 90, Jefferson, LA
ADT: 20,250
LA3046
UnknownOver: R/R,CITY STREETS,LA 611
.4 MI NORTH OF US 90, Jefferson, LA
ADT: 3,680
LA3134
UnknownOver: LA45;LA303;ICWW
.3 MI SOUTH OF LA 301, Jefferson, LA
ADT: 240
LA3139
UnknownOver: CLEARVIEW PARKWAY
.4 MI EAST OF LA 3154, Jefferson, LA
ADT: 30,800
LA3139
UnknownOver: LA 3152 RAMPS A,B,D&E
.5 MI EAST OF LA 3154, Jefferson, LA
ADT: 3,321
LA3139
UnknownOver: CLEARVIEW PKWY.
.6 MI EAST OF LA 3154, Jefferson, LA
ADT: 6,160
LA3139
UnknownOver: ICC.G. RR
.7 MI EAST OF LA 3154, Jefferson, LA
ADT: 3,321
LA3139
UnknownOver: CENTRAL AVE,IC,KCS,SP.RR
1.1 MI EAST OF LA 3154, Jefferson, LA
ADT: 3,331
LA3139
UnknownOver: HWYS, STS, RR, CA.
2.0 MI EAST OF LA 3152, Jefferson, LA
ADT: 16,427
I0010
UnknownOver: I-10 W.B. ON-RAMP
02264501502058, Jefferson, LA
ADT: 14,120
I0010
UnknownOver: WILLIAMS BLVD
2.4 MI E OF US 310, Jefferson, LA
ADT: 45,100
I0010
UnknownOver: WILLIAMS BLVD
3.4 MI W OF LA 3152, Jefferson, LA
ADT: 45,100
I0010
UnknownOver: LA 49; INTGS
0.5 MI S OF W ESPLANADE A, Jefferson, LA
ADT: 141,200
I0010
UnknownOver: LA 49
3.7 MI WEST OF LA 3152, Jefferson, LA
ADT: 45,100
I0010
UnknownOver: RAMP TO MOISANT AIRPORT
.4 MI EAST OF LA 49, Jefferson, LA
ADT: 45,100
I0010 ON-RAMP
UnknownOver: Canal No. 3 & LA 49
.4 MI EAST OF LA 49, Jefferson, LA
ADT: 14,210
I0010
UnknownOver: I-10, POWER BLVD.
1.24 MI EAST OF LA 49, Jefferson, LA
ADT: 70,600
Power Blvd
UnknownOver: I-10/Canal #3
1.28 MI EAST OF LA 49, Jefferson, LA
ADT: 70,600
Power Blvd
UnknownOver: I-10/ Canal #3
1.3 MI EAST OF LA 49, Jefferson, LA
ADT: 70,600
LA3152
UnknownOver: I 10
3.7 MI EAST OF LA 49, Jefferson, LA
ADT: 14,120
LA3152
UnknownOver: I 10
3.7 MI EAST OF LA 49, Jefferson, LA
ADT: 14,120
CLEARY AVE
UnknownOver: I 10
4.4 MI EAST OF LA 49, Jefferson, LA
ADT: 100,100
N CAUSEWAY BLVD
UnknownOver: I 10
5.4 MI EAST OF LA 49, Jefferson, LA
ADT: 10,010
N CAUSEWAY BLVD
UnknownOver: I 10
5.4 MI EAST OF LA 49, Jefferson, LA
ADT: 10,010
LA3152
UnknownOver: HILTON DR & RR
.5 MI SOUTH OF US 61, Jefferson, LA
ADT: 30,800
Lapalco BLVD
UnknownOver: HARVEY CANAL
3.1 MI.W.OF BELLCHAS, Jefferson, LA
ADT: 7,700
TRAFFIC CIRCLE
UnknownOver: US 61 UNDER TRAF. CIRCLE
0.6 MI N OF US 90, Jefferson, LA
ADT: 36,800
N. Causeway BLVD
UnknownOver: LA 611-9 & JOHNSON ST
0.62 MI N OF US 90, Jefferson, LA
ADT: 7,250
N. Causeway BLVD
UnknownOver: LA 611-9 & JOHNSON ST
0.62 MI N OF US 90, Jefferson, LA
ADT: 7,250
LA0099
UnknownOver: I-10
1.0 MI N of US 90, Jefferson Davis, LA
ADT: 37,600
LA0097
UnknownOver: I-10
1.6 MI NE of LA 102, Jefferson Davis, LA
ADT: 43,300
LA0101
UnknownOver: I-10
1.0 MI N of US 90, Jefferson Davis, LA
ADT: 49,300
I0010
UnknownOver: US 165, FRONTAGE RD, RR
1.8 MI E OF LA 383, Jefferson Davis, LA
ADT: 8,624
I0010
UnknownOver: US 165, FRONTAGE RD, RR
3.3 MI W OF LA 101, Jefferson Davis, LA
ADT: 8,624
OILFIELD ROAD
UnknownOver: I-10
1.0 MI N of US 90, Jefferson Davis, LA
ADT: 36,100
HOKE RD
UnknownOver: I-10
1.0 MI N of US 90, Jefferson Davis, LA
ADT: 37,600
FARM SUPPLY ROAD
UnknownOver: I-10
1.1 MI N of US 90, Jefferson Davis, LA
ADT: 41,600
I0010
UnknownOver: LA 26
I-10 OVER LA 26, Jefferson Davis, LA
ADT: 15,000
I0010
UnknownOver: LA 26
2.0 MI W of LA 97, Jefferson Davis, LA
ADT: 15,000
Showing 351-400 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 |