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
I0010
UnknownOver: OFF RAMP I-10/CAROLTON
1.93 MI EAST OF I-610, Orleans, LA
ADT: 13,250
I0010
UnknownOver: CITY STREETS /RR
3.12 MI EAST OF I-610, Orleans, LA
ADT: 61,400
I0010
UnknownOver: CITY STREETS
3.14 MI EAST OF I-610, Orleans, LA
ADT: 66,000
US0090
UnknownOver: OVER CITY STREETS
.58 MI EAST OF US 90, Orleans, LA
ADT: 1,820
US0090
UnknownOver: OVER CITY STREETS
.62 MI EAST OF US 90, Orleans, LA
ADT: 1,300
I0010
UnknownOver: CITY STREETS
.8 MI EAST OF US 90, Orleans, LA
ADT: 8,060
I0010
UnknownOver: CITY STREETS
.9 MI EAST OF US 90, Orleans, LA
ADT: 21,990
I0010
UnknownOver: CITY STREETS
1.0 MI EAST OF US 90, Orleans, LA
ADT: 21,990
I0010
UnknownOver: CITY STREETS
1.45 MI EAST OF US 90, Orleans, LA
ADT: 21,990
I0010 ON-RAMP
UnknownOver: N. CLAIRBORNE AVE
1.56 MI EAST OF US 90, Orleans, LA
ADT: 21,990
I0010
UnknownOver: CITY STREETS
1.62 MI EAST OF US 90, Orleans, LA
ADT: 21,990
I0010
UnknownOver: CLAIRBORNE AVE/DUMAINE S
1.63 MI EAST OF US 90, Orleans, LA
ADT: 21,990
I0010
UnknownOver: CITY STREETS
0.039 N OF ST. PHILIP ST, Orleans, LA
ADT: 21,990
I0010
UnknownOver: I10 EAST &I 10 W
2.08 MI EAST OF US 90, Orleans, LA
ADT: 219,900
I0010
UnknownOver: CITY STREETS
2.2 MI EAST OF US 90, Orleans, LA
ADT: 2,990
I0010
UnknownOver: I-10 EAST & WEST
.3 MI EAST OF LA 39, Orleans, LA
ADT: 12,200
I0010
UnknownOver: INNER HARBOR /CITY STS
2.5 MI EAST OF LA 39, Orleans, LA
ADT: 11,160
I0010
UnknownOver: INNER HARBOR NAV CANAL
0.6 MI SW OF US 90, Orleans, LA
ADT: 11,160
I0010
UnknownOver: I-10
3.9 MI EAST OF LA 39, Orleans, LA
ADT: 12,020
I0010
UnknownOver: I-10 OVER US 90(CHEF HWY
2.2 MI EAST OF US 610, Orleans, LA
ADT: 16,650
I0010
UnknownOver: I-10 OVER US 90(CHEF HWY
6.3 MI WEST OF LA 47, Orleans, LA
ADT: 16,650
MORRISON RD
UnknownOver: I-10
1.2 MI EAST OF US 90, Orleans, LA
ADT: 57,350
I0010
UnknownOver: OFF RAMP OVER I10 & LA47
.1 MI EAST OF I-510, Orleans, LA
ADT: 33,050
I0010
UnknownOver: ON RAMP OVER I10 & LA47
.1 MI EAST OF I-510, Orleans, LA
ADT: 6,610
MICHOUD BLVD
UnknownOver: I 10
1.7 MI EAST OF I-510, Orleans, LA
ADT: 33,050
UNNAMED RD
UnknownOver: I-10
3.1 MI EAST OF I-510, Orleans, LA
ADT: 33,050
UNNAMED RD
UnknownOver: I-10
4.5 MI EAST OF I-510, Orleans, LA
ADT: 33,050
LA0407
UnknownOver: (NEW)ALGIERS CUTOFF CANA
1.6 MI SE OF LA 428, Orleans, LA
ADT: 10,700
S BROAD ST
UnknownOver: I-10; RR; STS
2.0 MI S. OF TULANE AVE., Orleans, LA
ADT: 77,950
N C FRANCIS PKWY
UnknownOver: I-10/RR/CITY STS.
1.5 MI S OF TULANE AVENUE, Orleans, LA
ADT: 15,590
S.N.C. FRANCIS PK
UnknownOver: I-10; RR; STREETS
1.5 MI S OF TULANE AVENUE, Orleans, LA
ADT: 15,590
LA1264
UnknownOver: ON-RAMP TO SEABROOK BR.
.65 MI. W. OF DOWNMAN RD., Orleans, LA
ADT: 111
US 80
UnknownOver: I-20
1.69 Mi. E. of LA 151, Ouachita, LA
ADT: 38,000
US0165
UnknownOver: US 165-B & MP RR @ RILLA
.28 MI NORTH OF US 165 BU, Ouachita, LA
ADT: 760
US0165
UnknownOver: US 165-B & M P RR @ RILL
.28 MI NORTH OF US 165 BU, Ouachita, LA
ADT: 4,020
US0165
UnknownOver: LA 594&ICRR
US 165 OVER I-20, Ouachita, LA
ADT: 27,480
US0165
UnknownOver: LA 549 & ICRR
US 165 OVER I-20, Ouachita, LA
ADT: 27,480
I0020
UnknownOver: I-20 RAMP D FROM US165 S
I-20/US 165 INTERCHANGE, Ouachita, LA
ADT: 8,060
US0165
UnknownOver: US 80
US 165 OVER US 80, Ouachita, LA
ADT: 4,500
LA0034
UnknownOver: LA 34 OVER I-20
LA 34 OVER I-20, Ouachita, LA
ADT: 21,500
LA0034
UnknownOver: INTERSTATE 20
LA 34 OVER I-20, Ouachita, LA
ADT: 40,900
LA0546
UnknownOver: INTG I-20
LA 546 OVER I-20, Ouachita, LA
ADT: 2,300
LA0151
UnknownOver: LA 151 OVER I-20
LA 151 OVER I-20, Ouachita, LA
ADT: 2,400
LA0594
UnknownOver: LA 594 OVER I-20
0.68 MI NE OF LA 15, Ouachita, LA
ADT: 43,600
PURDY RD
UnknownOver: I-20
1.4 MI WEST OF LA 151, Ouachita, LA
ADT: 3,620
BRITTON RD
UnknownOver: I-20
1.0 MI EAST OF US 80, Ouachita, LA
ADT: 3,770
CAMP RD
UnknownOver: I-20
3.6 MI EAST OF US 80, Ouachita, LA
ADT: 3,770
VANCIL RD
UnknownOver: I-20
1.0 MI EAST OF LA 546, Ouachita, LA
ADT: 5,890
LA3249
UnknownOver: I-20
3.2 MI EAST OF LA 546, Ouachita, LA
ADT: 23,500
DOWNING PINES RD
UnknownOver: I0020 & CONSTITUTION DR
4.2 MI EAST OF LA 546, Ouachita, LA
ADT: 6,220
Showing 551-600 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 |