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
Jack St.
FairOver: COULEE
0.1 Mi E of LA 182, Lafayette, LA
Built 1949 Load: 18.1 t ADT: 200
LA0151
FairOver: CREEK
3.1 MI EAST OF LA 563, Lincoln, LA
Built 1948 Load: 18.1 t ADT: 2,216
LA0507
FairOver: WILSON CREEK
2.6 MI SOUTH OF LA 815, Lincoln, LA
Built 1966 Load: 18.1 t ADT: 868
Dunn Rd
FairOver: Canal
0.20 mi. east of LA 1026, Livingston, LA
Built 2018 Load: 18.1 t ADT: 1,500
LA0063
FairOver: CREEK
0.1 M NW OF LA 1019, Livingston, LA
Built 1955 Load: 18.1 t ADT: 1,577
Old River Rd
FairOver: OLD AMITE RIVER
2.8MI NE OF JCT LA 22&16, Livingston, LA
Built 2001 Load: 18.1 t ADT: 200
Hood Rd
FairOver: COLYELL CREEK
2.5MI WSW OF INT LA 42&63, Livingston, LA
Built 2001 Load: 18.1 t ADT: 300
W. Bates Rd
FairOver: CANAL
0.5 MI SE OF I-12&LA43, Livingston, LA
Built 2004 Load: 18.1 t ADT: 100
US0080
FairOver: COW BAYOU
1.8 MI EAST OF LA 17, Madison, LA
Built 1955 Load: 18.1 t ADT: 1,358
LA0554
FairOver: CREEK
2.3 Mi. E. of LA 139, Morehouse, LA
Built 1954 Load: 18.1 t ADT: 495
FDR 585
FairOver: RAGAN CREEK
2 MI. N. OF GOLDONNA, Natchitoches, LA
Built 1970 Load: 18.1 t ADT: 30
Dick Anderson Rd
FairOver: BRUSHY BAYOU
1.0 MILE SOUTH OF LA 174, Natchitoches, LA
Built 1975 Load: 18.1 t ADT: 80
Morrison Rd
FairOver: SAINT CHARLES CANAL
0.5MI.E.OF NEW CASTL, Orleans, LA
Built 1960 Load: 18.1 t
LA0417
FairOver: LATERAL 415 W
LA0417, Pointe Coupee, LA
Built 1958 Load: 18.1 t ADT: 503
FDR 250
FairOver: BILLS CREEK
NO DATA ENTERED, Rapides, LA
Built 1970 Load: 18.1 t ADT: 30
FDR 273
FairOver: CASTOR CREEK
NATIONAL FOREST, Rapides, LA
Built 1963 Load: 18.1 t ADT: 40
FDR 273
FairOver: CASTOR CREEK
NATIONAL FOREST, Rapides, LA
Built 1963 Load: 18.1 t ADT: 40
FDR 273
FairOver: CASTOR OVERFLOW
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 18.1 t ADT: 40
FDR 287
FairOver: LOVING CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1975 Load: 18.1 t ADT: 60
I0049
FairOver: BAYOU BOEUF DIV. CANAL
2.57 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 18.1 t ADT: 24,080
I0049
FairOver: BAYOU BOEUF DIV. CANAL
2.57 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 18.1 t ADT: 11,969
LA1199
FairOver: CREEK
.6 MI. N OF LA112, Rapides, LA
Built 1965 Load: 18.1 t ADT: 362
LA0020
FairOver: DRAIN CANAL
LA0020, St. James, LA
Built 1965 Load: 18.1 t ADT: 8,204
Jessie B. Rd
FairOver: Bayou Mallet
0.7 Mi. S. of US 190, St. Landry, LA
Built 1986 Load: 18.1 t ADT: 100
Old US 190
FairOver: DRAINAGE BAYOU
0.2 Mi E of LA 3174, St. Landry, LA
Built 1930 Load: 18.1 t ADT: 270
Old US 190
FairOver: HALF MOON BAYOU
1.1 Mi. W. of LA 3174, St. Landry, LA
Built 1930 Load: 18.1 t ADT: 270
Common St.
FairOver: BAYOU TESSON
0.2 Mi E of LA 749, St. Landry, LA
Built 1965 Load: 18.1 t ADT: 250
LA0345
FairOver: Coulee DU Portage
2.7 MI SOUTH OF LA 96, St. Martin, LA
Built 1962 Load: 18.1 t ADT: 1,319
LA0345
FairOver: Point Claire Coulee
2.4 MI SOUTH OF LA 96, St. Martin, LA
Built 1962 Load: 18.1 t ADT: 1,319
CYPRESS ISLAND RD
FairOver: CREEK
1.3 MI SW of LA 31, St. Martin, LA
Built 1962 Load: 18.1 t ADT: 1,584
McVeigh Rd
FairOver: Pont Brule Bayou
3.1 Mi. W of LA 31, St. Martin, LA
Built 1975 Load: 18.1 t ADT: 36
LA0036
FairOver: ICG RAILROAD
LA0036, St. Tammany, LA
Built 1937 Load: 18.1 t ADT: 2,206
LA0450
FairOver: MARYS BRANCH
2.5 M NW OF LA 25, St. Tammany, LA
Built 1958 Load: 18.1 t ADT: 1,822
Lake Rd
FairOver: LACOMBE BAYOU
1080M SOUTH OF LA 434, St. Tammany, LA
Built 1992 Load: 18.1 t ADT: 100
Jackson Rd
FairOver: CREEK CANAL
0.2 MILES NORTH OF US190, St. Tammany, LA
Built 1990 Load: 18.1 t ADT: 70
US0190
FairOver: DRAIN
1.3 M W OF LA 445, Tangipahoa, LA
Built 1954 Load: 18.1 t ADT: 9,053
Bud James Ln
FairOver: CREEK
0.1 MI W OF BROWN RD RT76, Tangipahoa, LA
Built 1972 Load: 18.1 t ADT: 134
Wardline Rd
FairOver: CANAL
1.2 MI W OF INT OF I-55 &, Tangipahoa, LA
Built 2000 Load: 18.1 t ADT: 5,805
LA0605
FairOver: LAKE BRUIN BAYOU
4.5 MI NORTH OF LA 604, Tensas, LA
Built 1951 Load: 18.1 t ADT: 2,306
N BAYOU BLACK DR
FairOver: COULEE
0.9 MI SE OF DIANA ST., Terrebonne, LA
Built 1974 Load: 18.1 t ADT: 1,248
COUNTRY ESTATES DR
FairOver: ST LOUIS BAYOU
0.9 MI NORTH OF LA 660, Terrebonne, LA
Built 1967 Load: 18.1 t ADT: 7,175
LA0550
FairOver: CREEK
4.09 MI NORTH OF LA 15, Union, LA
Built 1936 Load: 18.1 t ADT: 464
LITTLE LOUTRE RD
FairOver: LITTLE BAYOU DELOUTRE
1.3 MI W of LA 549, Union, LA
Built 1994 Load: 18.1 t
LA0335
FairOver: SLEDGE CANAL
2.11 MI E. OF LA 3093, Vermilion, LA
Built 1967 Load: 18.1 t ADT: 284
422 FDR
FairOver: BUNDKICK CREEK TRIB.
6.3 M. NE. OF ROSEPIN, Vernon, LA
Built 1970 Load: 18.1 t ADT: 60
422 FDR
FairOver: BUNDICK CREEK TRIB
6.4 M. NE. OF ROSEPIN, Vernon, LA
Built 1970 Load: 18.1 t ADT: 60
422 FDR
FairOver: BUNDICK CREEK
6.5 M. NE. OF ROSEPIN, Vernon, LA
Built 1970 Load: 18.1 t ADT: 60
471 FDR
FairOver: TIGHTEYE CREEK
7.5 M. WNW. OF CRAVE, Vernon, LA
Built 1970 Load: 18.1 t ADT: 80
LA0450
FairOver: GORDON CREEK
LA0450, Washington, LA
Built 1953 Load: 18.1 t ADT: 1,162
Dorcheat Rd
FairOver: COW CREEK
11.0M NORTH OF US 79-80, Webster, LA
Built 1992 Load: 18.1 t ADT: 288
Showing 1,551-1,600 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 |