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
FairOver: CANAL
0.2 MI E OF LA 102, Jefferson Davis, LA
Built 1931 Load: 19.1 t ADT: 14,902
ARDOIN COVE ROAD
FairOver: CREEK
0.7 M E of LA 101, Jefferson Davis, LA
Built 1972 Load: 19.1 t ADT: 70
Gateau Rd
FairOver: COULEE
0.20 Mi N of LA 93, Lafayette, LA
Built 1977 Load: 19.1 t ADT: 70
Bayou Folse Rd
FairOver: COULEE
0083 LOG MI FROM INT, Lafourche, LA
Built 1965 Load: 19.1 t ADT: 212
LA0127
FairOver: TARVER CREEK
1.7 MI NORTH OF LA 770, LaSalle, LA
Built 1950 Load: 19.1 t ADT: 3,888
Sharp Mello Lane
FairOver: CREEK
0.2 MILES SOUTH OF LA 307, LaSalle, LA
Built 1972 Load: 19.1 t
LA0544
FairOver: MILL CREEK
1.62 MI EAST OF LA 563, Lincoln, LA
Built 1954 Load: 19.1 t ADT: 11,636
HOGAN RD
FairOver: CHOUDRANT CREEK
2 MI NW CHOUDRANT, Lincoln, LA
Built 1978 Load: 19.1 t ADT: 20
LA1036
FairOver: CREEK
0.6 M NW OF LA 441, Livingston, LA
Built 1967 Load: 19.1 t ADT: 426
LA1024
FairOver: CREEK
2.8 M E OF LA 447, Livingston, LA
Built 1956 Load: 19.1 t ADT: 1,020
Gene Bucnel Rd
FairOver: GRAYS CREEK
GENE BUCKNEL AVE,W LA1026, Livingston, LA
Built 1982 Load: 19.1 t ADT: 800
FDR 524
FairOver: MALAUDOS CREEK
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1968 Load: 19.1 t ADT: 10
FDR 570
FairOver: LUSTER BRANCH
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1970 Load: 19.1 t ADT: 30
LA0156
FairOver: MOLINA CREEK
10.18 MI. E OF INT LA9, Natchitoches, LA
Built 1956 Load: 19.1 t ADT: 525
LA0117
FairOver: KISATCHIE CREEK
.6 MI N OF JCT LA 118, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: RELIEF SLOUGH
.92 MI N OF JCT LA 118, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: MIDDLE CREEK
6.71 MI N OF JCT 118, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: MIDDLE CREEK
7.14 MI N OF JCT 118, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: BAYOU SANTA BARB
2.06 MI. SOUTH OF LA 478, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: BAYOU SANTA BARB
1.94 MI. SOUTH OF LA 478, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: BAYOU SANTA BARB
1.89 MI. SOUTH OF LA 478, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: MCKIMS CREEK
0.74 MI. NORTH OF LA 478, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: HORSE PEN CREEK
3.03 MI. NORTH OF LA 478, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: FLAT SLOUGH
0.51 MI. SOUTH OF LA 120, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0117
FairOver: PROVENCAL BAYOU
0.39 MI. SOUTH OF LA 120, Natchitoches, LA
Built 1955 Load: 19.1 t ADT: 1,513
LA0494
FairOver: BAYOU POISSON
3.04 MI. N OF INT LA119, Natchitoches, LA
Built 1950 Load: 19.1 t ADT: 18,361
LA0047
FairOver: I C WATERWAY(GULF OUTLET
2.0 MI SOUTH OF I-10, Orleans, LA
Built 1967 Load: 19.1 t ADT: 23,365
MORRISON RD
FairOver: LAWRENCE CANAL
1.0 MI.W OF EDWARD S, Orleans, LA
Built 1960 Load: 19.1 t
Bundy Rd
FairOver: DRAINAGE CANAL
0.6 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 19.1 t
Bundy Rd
FairOver: DRAINAGE CANAL
0.65 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 19.1 t
FDR L01
FairOver: SPRING CREEK
NO DATA ENTERED, Rapides, LA
Built 1970 Load: 19.1 t ADT: 50
Grandpierre Rd
FairOver: BEAVER CREEK
2.2 MI. NE OF LA 116, Rapides, LA
Built 1970 Load: 19.1 t ADT: 75
LA0155
FairOver: CARROL CREEK
3.32 MI EAST OF US 71, Red River, LA
Built 1972 Load: 19.1 t ADT: 1,130
LA0576
FairOver: CREEK
5.1 MI SOUTH OF LA 132, Richland, LA
Built 1968 Load: 19.1 t ADT: 162
LA0043
FairOver: TWELVE MILE CREEK
LA0043, St. Helena, LA
Built 1957 Load: 19.1 t ADT: 865
LA0432
FairOver: DRAIN
0.9 M NW OF LA 38, St. Helena, LA
Built 1965 Load: 19.1 t ADT: 532
Bernice St.
FairOver: Yarbor Bayou
0.1 Mi E of Ina Clare Dr., St. Landry, LA
Built 1960 Load: 19.1 t ADT: 800
W. Church St.
FairOver: BAYOU TESSON
0.2 Mi W. of La 182, St. Landry, LA
Built 1965 Load: 19.1 t ADT: 2,200
Pepper Rd.
FairOver: COULEE
0.2 Mi S of US 90, St. Mary, LA
Built 1967 Load: 19.1 t ADT: 230
LA0059
FairOver: LONG BRANCH BAYOU
0.9 M N OF LA 36, St. Tammany, LA
Built 1954 Load: 19.1 t ADT: 4,612
US0190
FairOver: CREEK
2.8 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 19.1 t ADT: 8,262
US0190
FairOver: DIXIE CREEK
4.3 M E OF LA 445, Tangipahoa, LA
Built 1954 Load: 19.1 t ADT: 8,262
LA0040
FairOver: BRUSHY BRANCH
0.7 M E OF LA 443, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,634
LA0040
FairOver: CHAPEPEELA CREEK
LA0040, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,634
LA0040
FairOver: CHAP CREEK RELIEF
1.0 M W OF LA 445, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,634
LA1064
FairOver: STILL BRANCH
1 MI. East OF LA 43, Tangipahoa, LA
Built 1957 Load: 19.1 t ADT: 2,854
LA0443
FairOver: TANG RIVER RELIEF
LA0443, Tangipahoa, LA
Built 1955 Load: 19.1 t ADT: 6,478
Polk St
FairOver: CANAL
0041 LOG MI FROM IN, Terrebonne, LA
Built 1965 Load: 19.1 t ADT: 6,018
Bayou Gardens Blvd
FairOver: ST. LOUIS CANAL
0.3 WEST OF LA 660, Terrebonne, LA
Built 1995 Load: 19.1 t ADT: 10,255
JARVIS BRIDGE RD
FairOver: BLACK BAYOU
0.01 MI N OF LA 182, Terrebonne, LA
Built 1968 Load: 19.1 t ADT: 130
Showing 1,751-1,800 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 |