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
I0049
FairOver: St. Julian/Longlois Hill
1.13 MI. NORTH OF LA 120, Natchitoches, LA
Built 1988 Load: 38.1 t ADT: 28,142
I0010
FairOver: 17TH ST. CAN/CITY STREET
,3 MI WEST OF I-610, Orleans, LA
Built 2000 Load: 38.1 t ADT: 109,950
LA0407
FairOver: WOODLAND HWY NORMAN CANA
1.15 MI SOUTH OF LA 428, Orleans, LA
Built 1982 Load: 38.1 t ADT: 8,495
LA0407
FairOver: WOODLAND HWY NORMAN CANA
1.15 MI SOUTH OF LA 428, Orleans, LA
Built 1982 Load: 38.1 t ADT: 8,495
LA0594
FairOver: PATRICK BAYOU
1.59 MI NORTH OF US 80, Ouachita, LA
Built 1981 Load: 38.1 t ADT: 2,642
LA0457
FairOver: BAYOU LATANIER
2.79 MI. SOUTH OF LA 3170, Rapides, LA
Built 1981 Load: 38.1 t ADT: 806
LA0112
FairOver: COW BAYOU
1.4 MI. SOUTH OF LA 462, Rapides, LA
Built 1982 Load: 38.1 t ADT: 1,197
LA0112
FairOver: CHERRY WINCHE CREEK
1.95 MI. NORTH OF LA 462, Rapides, LA
Built 1982 Load: 38.1 t ADT: 1,197
I0049
FairOver: PARKWOOD DR, PHILLIP B.
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1995 Load: 38.1 t ADT: 1,770
US0084
FairOver: DRAIN
3.10 MI EAST OF LA 1, Red River, LA
Built 1974 Load: 38.1 t ADT: 4,670
LA0788
FairOver: GRAND BAYOU
.69 MI WEST OF US 371, Red River, LA
Built 1973 Load: 38.1 t ADT: 405
BURGESS RD
FairOver: LITTLE CREEK
0.9 MI W of LA 622, Richland, LA
Built 2005 Load: 38.1 t ADT: 200
LA0191
FairOver: BAYOU SCIE BRANCH
0.26 MI. NORTH OF LA 475, Sabine, LA
Built 1982 Load: 38.1 t ADT: 1,210
I0010
FairOver: BONNET CARRE SPILLWAY
1.9 MI EAST OF I-55, St. Charles, LA
Built 1972 Load: 38.1 t ADT: 32,050
US0051
FairOver: DRAINAGE CANAL
0.1 M NE OF I-55, St. John the Baptist, LA
Built 1975 Load: 38.1 t ADT: 16,686
LA0742
FairOver: DRAINAGE CANAL
3.02 MI WEST OF LA 31, St. Landry, LA
Built 1974 Load: 38.1 t ADT: 1,741
US0190
FairOver: TCHEFUNCTE RIVER
US0190, St. Tammany, LA
Built 1968 Load: 38.1 t ADT: 11,418
US0190
FairOver: PONCHITOLAWA CREEK
US 190, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 27,870
US0190
FairOver: PONCHITOLAWA CR
US 190, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 9,838
LA0040
FairOver: SIMALOUSA CREEK
1.7 M SE OF LA 437, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 5,160
LA0059
FairOver: CHINCHUBA BRANCH
1.6 M N OF I-12, St. Tammany, LA
Built 1972 Load: 38.1 t ADT: 14,110
LA0059
FairOver: DRAIN
3.0 M N OF I-12, St. Tammany, LA
Built 1972 Load: 38.1 t ADT: 14,110
LA0059
FairOver: ABITA RIVER
4.0 M N OF I-12, St. Tammany, LA
Built 1972 Load: 38.1 t ADT: 14,110
US0190
FairOver: OVER FRENCH BRANCH
US 190 LOG MI 2.89, St. Tammany, LA
Built 1984 Load: 38.1 t ADT: 21,254
US0190
FairOver: NATALBANY RIVER
2.55 MI. WEST OF I-55, Tangipahoa, LA
Built 1950 Load: 38.1 t ADT: 8,928
LA1051
FairOver: DRAIN
LA. 1051, Tangipahoa, LA
Built 1975 Load: 38.1 t ADT: 1,870
LA1054
FairOver: SPRING CREEK
LA 1054 LOGMI 00.08, Tangipahoa, LA
Built 1981 Load: 38.1 t ADT: 1,318
LA0827
FairOver: GLAZE CREEK
4.07 MI E of LA 143, Union, LA
Built 1979 Load: 38.1 t ADT: 94
LA0697
FairOver: STREAM
1.2 MI W. OF LA 343, Vermilion, LA
Built 1976 Load: 38.1 t ADT: 970
LA0697
FairOver: STREAM
2.1 MI E. OF LA 343, Vermilion, LA
Built 1976 Load: 38.1 t ADT: 970
LA0465
FairOver: SHINGLE MILL BRANCH
2.75 MI EAST OF LA 8, Vernon, LA
Built 1981 Load: 38.1 t ADT: 500
LA0465
FairOver: SHINGLE MILL CREEK
2.86 MI EAST OF LA 8, Vernon, LA
Built 1981 Load: 38.1 t ADT: 500
LA0465
FairOver: TWO MILE BRANCH
6.5 MI EAST OF LA 8, Vernon, LA
Built 1981 Load: 38.1 t ADT: 500
LA0438
FairOver: LAW CANAL
4.7M NE OF JCT LA 38, Washington, LA
Built 1992 Load: 38.1 t ADT: 688
LA0424
FairOver: DRAIN
1.2M NORTH OF INT LA 62, Washington, LA
Built 1993 Load: 38.1 t ADT: 1,873
LA1071
FairOver: SCARBOROUGH CREEK
LA1071, Washington, LA
Built 1974 Load: 38.1 t ADT: 498
LA0531
FairOver: BRANCH
6.6 MI NORTH OF LA 792, Webster, LA
Built 1970 Load: 38.1 t ADT: 1,230
LA0521
FairOver: BRANCH
.29 MI SOUTH OF LA 2, Webster, LA
Built 1977 Load: 38.1 t ADT: 409
I0020
FairOver: GOODWILL ROAD
.79 MI WEST OF US 371, Webster, LA
Built 2004 Load: 38.1 t ADT: 25,379
I0020
FairOver: GOODWILL ROAD
.79 MI WEST OF US 371, Webster, LA
Built 2004 Load: 38.1 t ADT: 31,074
I0020
FairOver: DORCHEAR BAYOU REL
0.44 M EAST OF US 371, Webster, LA
Built 1992 Load: 38.1 t ADT: 32,869
I0020
FairOver: DORCHEAT BAYOU
0.84 MI. E. OF LA 7, Webster, LA
Built 1992 Load: 38.1 t ADT: 32,869
I0020
FairOver: DORCHEAT BAYOU
0.84M EAST OF LA 7, Webster, LA
Built 1960 Load: 38.1 t ADT: 38,625
I0020
FairOver: DORCHEAT BAYOU REL
1.17M EAST OF LA 7, Webster, LA
Built 1992 Load: 38.1 t ADT: 32,869
I0020
FairOver: DORCHEAT BAYOU REL
1.17M EAST OF LA 7, Webster, LA
Built 1960 Load: 38.1 t ADT: 38,625
LA0878
FairOver: COLEWA BAYOU
1.6 MI WEST OF LA 2, West Carroll, LA
Built 1980 Load: 38.1 t ADT: 565
LA0582
FairOver: DRAINAGE CANAL
1.3 MI SOUTH OF LA 2, West Carroll, LA
Built 1975 Load: 38.1 t ADT: 324
LA0577
FairOver: POVERTY POINT BRIDGE
5.48 MI EAST OF LA 17, West Carroll, LA
Built 1975 Load: 38.1 t ADT: 588
South Calvin
FairOver: KYIAIES CREEK RELIEF
0.53 MI. SOUTH OF LA 156, Winn, LA
Built 1991 Load: 38.1 t ADT: 80
S RIVER RD
FairOver: BAPTISTE CREEK
2.6 MI SOUTH OF LA 10, Allen, LA
Built 2003 Load: 38.2 t ADT: 70
Showing 5,201-5,250 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 |