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
LA0102
UnknownOver: I-10
1.0 MI N OF US 90, Jefferson Davis, LA
ADT: 43,300
LA0395
UnknownOver: I-10
1.4 MI N of US 90, Jefferson Davis, LA
ADT: 41,600
LA0093
UnknownOver: LA 93 OVER I-10
0.8 Miles North of US 90, Lafayette, LA
ADT: 53,100
LA 343
UnknownOver: I0010
1 Mile East of LA 95, Lafayette, LA
ADT: 53,100
Mills St
UnknownOver: I-10
.34 MI N of W Willow St, Lafayette, LA
ADT: 63,504
Ambassador Caffery
UnknownOver: I-10
1.0 miles North of US 90, Lafayette, LA
ADT: 69,500
I0010
UnknownOver: LA 182
1.75 MI East of LA 3184, Lafayette, LA
ADT: 27,500
I0010
UnknownOver: LA 182
I-10 OVER LA 182, Lafayette, LA
ADT: 27,500
I0010
UnknownOver: Acadian Hills Lane
0.5 MI EAST OF LA 182, Lafayette, LA
ADT: 7,400
I0010
UnknownOver: ACADIAN HILLS LANE
0.85 MI W of I-49, Lafayette, LA
ADT: 7,400
I0010
UnknownOver: I0049/US0167
1.33 Mi. East of LA 182, Lafayette, LA
ADT: 62,318
I0010
UnknownOver: I0049/US0167
6.43 Mi. West of LA 328, Lafayette, LA
ADT: 62,318
I0010
UnknownOver: LA 728-1
0.52 Miles East of LA 167, Lafayette, LA
ADT: 10,700
I0010
UnknownOver: LA 728-1
5.9 MI West of LA 328, Lafayette, LA
ADT: 10,700
I0049
UnknownOver: LA 98
2.5 MI N of I-10, Lafayette, LA
ADT: 11,600
I0049
UnknownOver: LA 98 [Gloria Switch Rd]
1.92 MI S of LA 726, Lafayette, LA
ADT: 11,600
I0049
UnknownOver: LA 726
I-49 OVER LA 726, Lafayette, LA
ADT: 13,800
I0049
UnknownOver: LA 726
I-49 OVER LA 726, Lafayette, LA
ADT: 13,800
MICHAUD ST
UnknownOver: I-49
.15 Mi SW of LA1252, Lafayette, LA
ADT: 4,320
I0049
UnknownOver: LA 182
3.0 Mi N. of LA 726, Lafayette, LA
ADT: 3,800
I0049
UnknownOver: LA 182
3.2 Miles S. of LA 182, Lafayette, LA
ADT: 3,800
LA0724
UnknownOver: I0010
.84 Mi. North of US 90, Lafayette, LA
ADT: 53,100
LA0308
UnknownOver: LA657-ICWW-STR@LAROSE
.5 MI NORTH OF LA 1, Lafourche, LA
ADT: 250
US0090
UnknownOver: US 90 OVER LA 316
US 90 OVER LA 316, Lafourche, LA
ADT: 9,600
US0090
UnknownOver: US 90 OVER LA 316
US 90 OVER LA 316, Lafourche, LA
ADT: 9,600
US0090
UnknownOver: LA 182 / Drainage Canal
US 90 EB OVER LA 182, Lafourche, LA
ADT: 6,400
US0090
UnknownOver: LA 182 / Drainage Canal
US 90 WB OVER LA 182, Lafourche, LA
ADT: 6,400
US0090
UnknownOver: LA1, B.LAFOURCHE, LA 308
4.5 MI EAST OF LA 182, Lafourche, LA
ADT: 9,700
US0090
UnknownOver: LA308, B.LAFOURCHE, LA1
10.5 MI WEST OF LA 632, Lafourche, LA
ADT: 9,700
LA0653
UnknownOver: LA 653 OVER US 90
LA 653 OVER US 90, Lafourche, LA
ADT: 28,600
LA0652
UnknownOver: US 90
LA 652 OVER US 90, Lafourche, LA
ADT: 28,600
EAGLE DR
UnknownOver: I-20
0.7 MI E OF US 167, Lincoln, LA
ADT: 20,550
TARBUTTON ROAD
UnknownOver: 1-20
0.04 MI. N. OF LA 150, Lincoln, LA
Built 2019 ADT: 21,850
US0167
UnknownOver: US 167 OVER I-20
US 167 OVER I-20, Lincoln, LA
ADT: 37,600
US0167
UnknownOver: US 167 OVER I-20
US 167 OVER I-20, Lincoln, LA
ADT: 37,600
LA0033
UnknownOver: LA 33 OVER I-20
0.6 MILES NORTH OF US 80, Lincoln, LA
ADT: 36,000
LA0145
UnknownOver: I-20
LA 145 OVER I-20, Lincoln, LA
ADT: 4,200
LA0544
UnknownOver: LA 544 OVER I-20
LA 544 OVER I-20, Lincoln, LA
ADT: 4,900
LA0507
UnknownOver: LA 507 OVER I-20
LA 507 OVER I-20, Lincoln, LA
ADT: 29,400
LA0563
UnknownOver: LA 563 OVER I-20
LA 563 OVER I-20, Lincoln, LA
ADT: 1,500
WALNUT CREEK RD
UnknownOver: I 20
3.7 MI WEST OF LA 507, Lincoln, LA
ADT: 36,700
WALNUT CR RD
UnknownOver: I 20
.9 MI WEST OF LA 507, Lincoln, LA
ADT: 33,976
RWE JONES DRIVE
UnknownOver: I 20
LA 147 OVER I-20, Lincoln, LA
ADT: 29,400
ROUGH EDGE RD
UnknownOver: I 20
2.2 MI EAST OF LA 33, Lincoln, LA
ADT: 3,600
CHANDLER RD
UnknownOver: I0020
3.55 MI EAST OF LA 33, Lincoln, LA
ADT: 6,666
PIPES RD
UnknownOver: I 20
5.35 MI EAST OF LA 33, Lincoln, LA
ADT: 3,600
HARRIS RD
UnknownOver: I-20
1.6 MI EAST OF LA 145M, Lincoln, LA
ADT: 3,620
NORRIS RD
UnknownOver: I 20
3.5 MI EAST OF LA 145M, Lincoln, LA
ADT: 3,620
LA0043
UnknownOver: I-12
3 Mi N. of La 42, Livingston, LA
ADT: 42,500
LA0016
UnknownOver: LA 16 OVER I-12
LA0016, Livingston, LA
ADT: 74,532
Showing 401-450 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 |