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
LA0112
GoodOver: BILL CREEK
5.65 MI EAST OF LA 121, Rapides, LA
Built 2007 Load: 38.2 t ADT: 1,268
LA0112
GoodOver: SQUYRES BRANCH
3.07 MI. EAST OF LA 1199, Rapides, LA
Built 2006 Load: 38.2 t ADT: 1,268
FERGUSON RD
GoodOver: CREEK
0.6 MI E of LA 609, Richland, LA
Built 2009 Load: 38.2 t ADT: 150
US0171
GoodOver: LEWIS CREEK
1.67 MI. NORTH OF LA 175, Sabine, LA
Built 2006 Load: 38.2 t ADT: 4,790
LA0632
GoodOver: MAIN CANAL
.01 MILE SOUTH OF LA 306, St. Charles, LA
Built 2011 Load: 38.2 t ADT: 1,297
LA0751
GoodOver: DRAINAGE LATERAL
2.78 MI WEST OF LA 35, St. Landry, LA
Built 1970 Load: 38.2 t ADT: 666
Point Verte Rd
GoodOver: COULEE
0.4 MI NW of LA 103, St. Landry, LA
Built 2005 Load: 38.2 t ADT: 385
LA0323
GoodOver: Bayou Teche
0.2 Mi W. of LA 87, St. Mary, LA
Built 2022 Load: 38.2 t ADT: 170
LA0040
GoodOver: TCHEFUNCTE RIVER
3.9 Mi E of LA 445, St. Tammany, LA
Built 2023 Load: 38.2 t ADT: 2,778
LA1054
GoodOver: TANGIPAHOA RIVER RELIEF
1.23 MILES EAST OF JCT US, Tangipahoa, LA
Built 2008 Load: 38.2 t ADT: 1,235
LA1054
GoodOver: TANGIPAHOA RIVER RELIEF
1.58 MILES EAST OF JCT US, Tangipahoa, LA
Built 2008 Load: 38.2 t ADT: 1,235
LA1054
GoodOver: TANGIPAHOA RIVER RELIEF
1.64 MILES EAST OF JCT US, Tangipahoa, LA
Built 2008 Load: 38.2 t ADT: 1,235
LA1054
GoodOver: TANGIPAHOA RIVER RELIEF
1.69 MILES EAST OF JCT US, Tangipahoa, LA
Built 2008 Load: 38.2 t ADT: 1,235
ST ELOI RD
GoodOver: DULARGE BAYOU
0.01 MI W OF LA 315, Terrebonne, LA
Built 2013 Load: 38.2 t ADT: 1,177
Elliot Rd
GoodOver: MAREE MICHAL CANAL
1.4 Mi S of La 14, Vermilion, LA
Built 2013 Load: 38.2 t ADT: 243
Lloyd Rd
GoodOver: Bayou Grand Marais
0.9 Mi N of La 92, Vermilion, LA
Built 2011 Load: 38.2 t ADT: 96
LA0157
GoodOver: DORCHEAT BAYOU
4.48 MILES EAST OF US 371, Webster, LA
Built 2010 Load: 38.2 t ADT: 1,757
LA0501
GoodOver: Iron Branch
2.0 Mi N of LA 1232, Winn, LA
Built 2022 Load: 38.2 t ADT: 549
Beluah
GoodOver: DUGDEMONA RIVER RELIEF
BUELAH ROAD, Winn, LA
Built 1992 Load: 38.2 t ADT: 291
Village Rd
GoodOver: NEW RIVER
0.1 MILES NORTH OF LA.429, Ascension, LA
Built 2016 Load: 38.6 t ADT: 35
LA0044
GoodOver: DRAINAGE
ON LA 44 0.5 MI N LA 931, Ascension, LA
Built 1999 Load: 38.6 t ADT: 12,382
Boudreaux Rd
GoodOver: SMITH BAYOU
0.2 Mi S of LA 429, Ascension, LA
Built 1986 Load: 38.6 t ADT: 250
LA0501
GoodOver: FOUSE BAYOU
6.0 MI SOUTH OF JCT OF LA, Bienville, LA
Built 2011 Load: 38.6 t ADT: 318
Beene Blvd
GoodOver: BENOIT BAYOU
00.17 MILES EAST OF LA 31, Bossier, LA
Built 2007 Load: 38.6 t ADT: 7,489
Vincent St.
GoodOver: VINTON DRAINAGE DITCH
0.1 MI S OF Goodwin St., Calcasieu, LA
Built 2013 Load: 38.6 t ADT: 3,374
Badley Rd
GoodOver: MONTE SANO BAYOU
0.4 MI W OF VETERAN BLVD, East Baton Rouge, LA
Built 2015 Load: 38.6 t ADT: 5,268
LA3064
GoodOver: WARD CREEK
LA3064, East Baton Rouge, LA
Built 1972 Load: 38.6 t ADT: 33,927
Crochet Rd
GoodOver: CANAL
1.0 MI. S. OF LA 86, Iberia, LA
Built 2017 Load: 38.6 t ADT: 660
Gondron Rd
GoodOver: CANAL
0.95 MI. S. OF LA 3242, Iberia, LA
Built 2017 Load: 38.6 t ADT: 727
JOHN LEWIS RD.
GoodOver: WEEKS CANAL
2.0 MI. E. OF LA 83, Iberia, LA
Built 2017 Load: 38.6 t ADT: 16
S. Dearborne Rd.
GoodOver: Bayou Queue De Tortue
1.1 MI SOUTH OF LA 342, Lafayette, LA
Built 2013 Load: 38.6 t ADT: 20
LA0001
GoodOver: OLD RIVER
0.09 M. N. OF S. JCT. LA, Natchitoches, LA
Built 2011 Load: 38.6 t ADT: 996
Longlois Hill Rd
GoodOver: BAYOU GRANDE
1.1 MILES NORTH OF LA 120, Natchitoches, LA
Built 2003 Load: 38.6 t ADT: 52
LA0428
GoodOver: ALGIERS CANAL
0.70 MILE SOUTH EAST OF U, Orleans, LA
Built 2012 Load: 38.6 t ADT: 626
Morrison Rd
GoodOver: DRAINAGE CANAL
0.7 MI SE OF LA 47, Orleans, LA
Built 1979 Load: 38.6 t
LA0010
GoodOver: PORTAGE CANAL #1
2.2 MILES NORTH OF MAIN S, Pointe Coupee, LA
Built 2009 Load: 38.6 t ADT: 4,563
MARTHAVILLE RD
GoodOver: BAYOU DUPONT
MARTHAVILLE RD, Sabine, LA
Built 2012 Load: 38.6 t ADT: 200
Williamson Spur Rd
GoodOver: Swayze Lake
3.3 Mi NE of LA 71, St. Landry, LA
Built 2004 Load: 38.6 t ADT: 210
E. Church St
GoodOver: PONCHATOULA CREEK
0.45 MILES EAST OF LA 106, Tangipahoa, LA
Built 2008 Load: 38.6 t ADT: 1,278
LA0664
GoodOver: BAYOU TERREBONNE
.01 MILE NORTH OF LA 24, Terrebonne, LA
Built 2011 Load: 38.6 t ADT: 5,593
Mike Fisher Rd
GoodOver: GORMAN CREEK
2.9 MILES NORTH OF LA 16, Washington, LA
Built 2011 Load: 38.6 t ADT: 377
LA0010
GoodOver: NO NAME STREAM
1.067 MILES WEST OF US 61, West Feliciana, LA
Built 2010 Load: 38.6 t ADT: 5,763
Couch
GoodOver: POPE CREEK
APPROX. .1 MI. NE OF US 8, Winn, LA
Built 2006 Load: 38.6 t ADT: 125
N Burnside Ave
GoodOver: NEW RIVER
0.4 MI S OF US 61, Ascension, LA
Built 1976 Load: 38.9 t ADT: 1,500
Roddy Rd
GoodOver: NEW RIVER CANAL
.3 MI E-US61, LA 3038 JCT, Ascension, LA
Built 1999 Load: 38.9 t ADT: 500
Hardtime Rd
GoodOver: CANCIENNE CANAL
3 MILES SOUTH OF NAPOLEON, Assumption, LA
Built 2006 Load: 38.9 t ADT: 60
Juneau Crossing
GoodOver: BAYOU ROUGE
0.01 MI. WEST OF LA 361, Avoyelles, LA
Built 1984 Load: 38.9 t ADT: 50
Rabalais St
GoodOver: LACOMBE BAYOU
0.01 MI. NORTH OF LA 114, Avoyelles, LA
Built 1984 Load: 38.9 t ADT: 40
Bear Creek Rd
GoodOver: SALINE BAYOU
1.9 MI. N. OF LA 507, Bienville, LA
Built 2018 Load: 38.9 t ADT: 150
I0049
GoodOver: MYRICKS BAYOU
1.29 M. N. OF LA 169, Caddo, LA
Built 2013 Load: 38.9 t ADT: 29,542
Showing 9,551-9,600 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 |