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
Rue Des Babineaux
GoodOver: ILE Des Cannes Coulee
0.7 MI. W. OF LA 93, Lafayette, LA
Built 2013 Load: 39.2 t ADT: 238
Rue Des Babineaux
GoodOver: COULEE ILE DES CANNES
0.9 MI. W. OF LA 93, Lafayette, LA
Built 2013 Load: 39.2 t ADT: 304
Rue Des Babineaux
GoodOver: QUE DE TOTUE BAYOU
1 M. West of LA 724, Lafayette, LA
Built 2013 Load: 39.2 t ADT: 502
US0165
GoodOver: CREEK
5.48 MI FROM JCT US 84 &, LaSalle, LA
Built 2009 Load: 39.2 t ADT: 5,116
US0165
GoodOver: US 165 over Chickasaw cr
2.7 Mi NE of US 84 E, LaSalle, LA
Built 2009 Load: 39.2 t ADT: 5,116
INDIAN LAKE RD
GoodOver: LICK BAYOU
3.2 MI E of LA 577, Madison, LA
Built 2003 Load: 39.2 t ADT: 275
LA0504
GoodOver: SIBLEY LAKE
1.7 MI. N OF INT LA6, Natchitoches, LA
Built 2005 Load: 39.2 t ADT: 1,737
Division Rd
GoodOver: Bayou Portage
2.4 Mi NE of LA 686, St. Landry, LA
Built 2004 Load: 39.2 t ADT: 1,220
Weinberger Rd
GoodOver: Big Branch
1.90 Mi. S. of La 22, Tangipahoa, LA
Built 2018 Load: 39.2 t ADT: 459
MAYFIELD RD
GoodOver: COULEE CANAL
1.0 MI. N. OF LA 3011, Terrebonne, LA
Built 2018 Load: 39.2 t ADT: 128
LA0008
GoodOver: DRAIN
1.25 MILES NE OF LA 121, Vernon, LA
Built 2015 Load: 39.2 t ADT: 931
LA0008
GoodOver: CALCASIEU RELIEF CREEK
1.52 MILES NE OF LA 121, Vernon, LA
Built 2015 Load: 39.2 t ADT: 931
LA0008
GoodOver: CALCASIEU RIVER
1.78 MILES NE OF LA 121, Vernon, LA
Built 2015 Load: 39.2 t ADT: 931
LA0008
GoodOver: MIMS CREEK
3.57 MILES NE OF LA 121, Vernon, LA
Built 2015 Load: 39.2 t ADT: 931
LA0008
GoodOver: MILL CREEK
4.37 MILES NE OF LA 121, Vernon, LA
Built 2015 Load: 39.2 t ADT: 931
LA0008
GoodOver: COWPEN GULLY
2.2 MILES WEST OF LA 465, Vernon, LA
Built 2015 Load: 39.2 t ADT: 931
LA0008
GoodOver: CANEY BRANCH
2.2 MI S OF LA 465, Vernon, LA
Built 2016 Load: 39.2 t ADT: 931
LA0477
GoodOver: HASSEN BRANCH
2.65 MI EAST OF US 71, Winn, LA
Built 2006 Load: 39.2 t ADT: 358
LA0477
GoodOver: LEMON BRANCH
3.34 MI. EAST US 71, Winn, LA
Built 2006 Load: 39.2 t ADT: 358
Harmon Rd
GoodOver: De Saule Coulee
1.4 Mi. N. of La 91, Acadia, LA
Built 2004 Load: 39.5 t ADT: 192
LA 1176
GoodOver: TURNER CANAL
1.6 MI. E of LA 29, Avoyelles, LA
Built 2021 Load: 39.5 t ADT: 310
LA0004
GoodOver: CREEK
5.5 MI E OF LA 507, Bienville, LA
Built 2021 Load: 39.5 t ADT: 715
LA0507
GoodOver: SALINE BAYOU RELIEF
1.18 MI EAST OF LA 9, Bienville, LA
Built 2022 Load: 39.5 t ADT: 540
US0080
GoodOver: BLACK LAKE CREEK
1.1 MI EAST OF LA 154, Bienville, LA
Built 2012 Load: 39.5 t ADT: 780
LA0004
GoodOver: BEE BRANCH
4.100 MI E OF LA 507, Bienville, LA
Built 2021 Load: 39.5 t ADT: 715
Gamm Rd
GoodOver: SWIFT BAYOU
0.49 MI. N. OF SELF ROAD, Caddo, LA
Built 2013 Load: 39.5 t ADT: 162
I0049
GoodOver: SELF ROAD
1.63 M. S. OF LA 530, Caddo, LA
Built 2013 Load: 39.5 t ADT: 29,542
I0049
GoodOver: SELF ROAD
1.63 M. N. OF LA 530, Caddo, LA
Built 2013 Load: 39.5 t ADT: 6,846
W. SALE RD
GoodOver: CONTRABAND BAYOU
1.2 MI. W OF LA 385, Calcasieu, LA
Built 2014 Load: 39.5 t ADT: 11,776
FARM ROAD
GoodOver: CANAL
0.7 MI E OF LA 397, Calcasieu, LA
Built 2022 Load: 39.5 t ADT: 38
ALTA ROAD
GoodOver: CREEK
1.1 MI E OF LOGNION ROAD, Calcasieu, LA
Built 2023 Load: 39.5 t ADT: 105
NIBLETTS BLUFF RD
GoodOver: GUM SLOUGH
0.4 MI E OF LA 109, Calcasieu, LA
Built 2023 Load: 39.5 t ADT: 1,273
Childress Rd
GoodOver: BEAUCOUP CREEK
2M E of La 506, Caldwell, LA
Built 2010 Load: 39.5 t ADT: 100
Childress Rd
GoodOver: BEAUCOUP CREEK
2M E of LA506, Caldwell, LA
Built 2010 Load: 39.5 t ADT: 100
LA 518
GoodOver: DRAIN
1.43 MI EAST OF LA 9, Claiborne, LA
Built 2023 Load: 39.5 t ADT: 678
Lemoine Cutoff Rd
GoodOver: VALENTINE BAYOU
0.32 MILES N JCT US 71, Grant, LA
Built 2009 Load: 39.5 t ADT: 36
Bonin Rd.
GoodOver: ISAAC VEROT COULEE
0.85 Mi SW of LA 182, Lafayette, LA
Built 2015 Load: 39.5 t ADT: 4,590
Brasher Rd
GoodOver: FUNNY LOUIS BAYOU
0.5 miles N of LA503, LaSalle, LA
Built 2003 Load: 39.5 t ADT: 125
LA 3072
GoodOver: Colvin Creek
0.9 Miles E. of US 167, Lincoln, LA
Built 2021 Load: 39.5 t ADT: 1,437
LA0146
GoodOver: CREEK
3.36 MI NORTH OF JCT WITH, Lincoln, LA
Built 2011 Load: 39.5 t ADT: 1,360
LA0146
GoodOver: CREEK
4.89 MILES NORTH OF CLAIB, Lincoln, LA
Built 2011 Load: 39.5 t ADT: 1,025
LA0428
GoodOver: ALGIERS CANAL
0.60 MILE SOUTH EAST OF U, Orleans, LA
Built 2012 Load: 39.5 t ADT: 626
FILMORE AVE
GoodOver: ORLEANS AVENUE CANAL
U3630007900591, Orleans, LA
Built 2001 Load: 39.5 t
US0165
GoodOver: YOUNGS BAYOU
0.69 MILES NORTH OF LA 15, Ouachita, LA
Built 2013 Load: 39.5 t ADT: 7,259
US0165
GoodOver: YOUNGS BAYOU
0.69 MILES NORTH OF LA 15, Ouachita, LA
Built 2013 Load: 39.5 t ADT: 3,402
RUBY RD
GoodOver: YOUNGS BAYOU
4.6 MI S OF I-20, Ouachita, LA
Built 2015 Load: 39.5 t ADT: 50
KEYSTONE RD
GoodOver: STUX BAYOU
1.6 MI W of US 165 N, Ouachita, LA
Built 1993 Load: 39.5 t ADT: 245
TOBE NABOURS RD
GoodOver: HURRICANE CREEK
TOBE NABOURS ROAD, Sabine, LA
Built 2011 Load: 39.5 t ADT: 210
Benny Pitre Rd.
GoodOver: DRAIN
1.3 Mi. E. of LA 103, St. Landry, LA
Built 2011 Load: 39.5 t ADT: 40
Durbin Rd
GoodOver: Moran Branch
.06 mi south of la 504, Tangipahoa, LA
Built 2018 Load: 39.5 t ADT: 575
Showing 9,751-9,800 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 |