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
LA0462
GoodOver: CHERRY WINCHE CR. RELIEF
4.17 MI. EAST OF LA 112, Rapides, LA
Built 1997 Load: 39.9 t ADT: 77
LA3100
GoodOver: KCS RR
0.58 MI. NE OF US 165B, Rapides, LA
Built 1994 Load: 39.9 t ADT: 3,546
US0071
GoodOver: ROCKY BAYOU
2.7 MI. NORTH OF I-49, Rapides, LA
Built 1997 Load: 39.9 t ADT: 10,090
US0071
GoodOver: ROCKY BAYOU
2.7 MI. N OF I-49, Rapides, LA
Built 1997 Load: 39.9 t ADT: 17,593
LA0784
GoodOver: GRAND BAYOU
1.69M EAST OF US71-US84, Red River, LA
Built 1991 Load: 39.9 t ADT: 626
Ferguson Rd
GoodOver: CHICOT BAYOU
1.6 MI EAST OF US 71, Red River, LA
Built 1998 Load: 39.9 t ADT: 111
GEORGIE RIDGE RD
GoodOver: BOEUF RIVER
.75 MILES WEST OF LA 585, Richland, LA
Built 2012 Load: 39.9 t ADT: 100
LA0476
GoodOver: NEGREET CREEK
2.8 MI NORTH OF LA 191, Sabine, LA
Built 1998 Load: 39.9 t ADT: 1,731
LA1216
GoodOver: LEWIS CREEK
9.0 MI EAST OF US 171, Sabine, LA
Built 1997 Load: 39.9 t ADT: 209
Lindsey Rd
GoodOver: JOSEPH BRANCH
0.6 MI. NORTH OF LA 10, St. Helena, LA
Built 2012 Load: 39.9 t ADT: 300
US0061
GoodOver: Blind River
0.1 Mi N. of LA 3274, St. James, LA
Built 1978 Load: 39.9 t ADT: 14,837
US0061
GoodOver: TCHACKCHOU BAYOU
US0061, St. James, LA
Built 1978 Load: 39.9 t ADT: 14,957
US0061
GoodOver: DRAIN CANAL
6.24 M W of LA 641, St. James, LA
Built 1978 Load: 39.9 t ADT: 14,957
Maccarty Dr
GoodOver: BAYOU YARBOR
0.8 Mi E of LA 357, St. Landry, LA
Built 2015 Load: 39.9 t ADT: 2,100
Summer Rd
GoodOver: BAYOU MALLET
0.3 MI West of Falcon Rd, St. Landry, LA
Built 2011 Load: 39.9 t ADT: 80
Prayer House Rd
GoodOver: BELLEVIEW BAYOU
2.1 Mi NW of LA 182, St. Landry, LA
Built 2013 Load: 39.9 t ADT: 325
Courtableau Rd
GoodOver: LITTLE DARBONNE BAYOU
0.50 Mi Wof US 190, St. Landry, LA
Built 2011 Load: 39.9 t ADT: 180
US0190
GoodOver: BAYOU DES CANNES
3.1 MI WEST OF LA 757, St. Landry, LA
Built 1990 Load: 39.9 t ADT: 3,235
Jack Fox Rd
GoodOver: Bourbeau Bayou Tributary
0.73 Mi SE of I-49, St. Landry, LA
Built 2007 Load: 39.9 t ADT: 80
LA0351
GoodOver: BAYOU TECHE
0.1 Mi W of 321, St. Martin, LA
Built 1993 Load: 39.9 t ADT: 3,526
I0012
GoodOver: EAST BEDICO CREEK
I0012, St. Tammany, LA
Built 1975 Load: 39.9 t ADT: 53,386
AVE LOUIS QUATROZE
GoodOver: PIPE AT CREEK
.9 MI W US 190-VERSAILLES, St. Tammany, LA
Built 1996 Load: 39.9 t ADT: 300
LA0038
GoodOver: TERRYS CREEK
LA0038, Tangipahoa, LA
Built 1974 Load: 39.9 t ADT: 3,120
LA3234
GoodOver: PONCHATOULA CREEK
1.1 MI EAST US 51 INTER., Tangipahoa, LA
Built 1995 Load: 39.9 t ADT: 18,303
US0090
GoodOver: SWAMP
.10 MI. FROM LA.20, Terrebonne, LA
Built 1995 Load: 39.9 t ADT: 2,629
US0090
GoodOver: SWAMP
.10 MI. FROM LA.20, Terrebonne, LA
Built 1995 Load: 39.9 t ADT: 2,629
DELOUTRE SWITCH RD
GoodOver: RAILROAD BRANCH
0.2 M N INT 620, Union, LA
Built 1990 Load: 39.9 t ADT: 448
Placide Rd
GoodOver: Coulee
0.3 Mi W of US 167, Vermilion, LA
Built 2022 Load: 39.9 t ADT: 1,200
Jude Rd
GoodOver: Coulee
0.2 Mi S. of LA 14, Vermilion, LA
Built 2023 Load: 39.9 t ADT: 3,300
Community Rd
GoodOver: BULL HOLE CANAL
0.9 MILES W. OF LA 82, Vermilion, LA
Built 2011 Load: 39.9 t ADT: 516
Sweetbay Rd.
GoodOver: NOEL CANAL
1.23 MI S. OF LA 335, Vermilion, LA
Built 2010 Load: 39.9 t ADT: 370
Amerada Rd
GoodOver: COULEE
3.9 Mi. SW of LA 92, Vermilion, LA
Built 2011 Load: 39.9 t ADT: 168
Holly Rd.
GoodOver: VINCENT CANAL
0.4 Mi S of La 14, Vermilion, LA
Built 2012 Load: 39.9 t ADT: 106
Bluebonnet Rd
GoodOver: GRAND MARAIS BAYOU
1.8 Mi W of LA 13, Vermilion, LA
Built 2010 Load: 39.9 t ADT: 61
Alpha Rd
GoodOver: COULEE KENNY
0.52 MI NORTH OF LA 696, Vermilion, LA
Built 2011 Load: 39.9 t ADT: 173
Emery Rd
GoodOver: DES ILES COULEE
0.8 Mi S of La 13, Vermilion, LA
Built 2009 Load: 39.9 t ADT: 20
Pioneer Rd
GoodOver: COULEE BATON
1.3 MILES S. OF LA 14, Vermilion, LA
Built 2011 Load: 39.9 t ADT: 106
Cleo Rd
GoodOver: COULEE BATON
0.4 Mi W of Alexander Rd, Vermilion, LA
Built 2010 Load: 39.9 t ADT: 853
Cuz Rd
GoodOver: ISLE MARRONE CANAL
0.92 MI W OF LA 35, Vermilion, LA
Built 2010 Load: 39.9 t ADT: 350
Columbus Rd
GoodOver: TOUCHETS CANAL
0.5 Mi S of La 35, Vermilion, LA
Built 2009 Load: 39.9 t ADT: 591
Cedric Rd
GoodOver: GRANGERS CANAL
.09 MI E of Leblanc Rd, Vermilion, LA
Built 2000 Load: 39.9 t ADT: 200
US0171
GoodOver: VERNON LAKE
2.09 MI. SOUTH OF LA 111, Vernon, LA
Built 1967 Load: 39.9 t ADT: 6,952
LA0467
GoodOver: BAYOU CASTOR N BRANCH
1.04 MI. SOUTH OF US 171, Vernon, LA
Built 1989 Load: 39.9 t ADT: 4,743
LA0111
GoodOver: DRY BRANCH CREEK
11.24M SOUTH OF LA 8, Vernon, LA
Built 1992 Load: 39.9 t ADT: 1,480
LA0111
GoodOver: MILL CREEK
8.71M SOUTH OF LA 8, Vernon, LA
Built 1992 Load: 39.9 t ADT: 1,480
LA0111
GoodOver: MOORE BRANCH
8.28M SOUTH OF LA 8, Vernon, LA
Built 1992 Load: 39.9 t ADT: 1,480
LA0111
GoodOver: DAMREL CREEK
7.45M SOUTH OF LA 8, Vernon, LA
Built 1992 Load: 39.9 t ADT: 1,480
LA0111
GoodOver: RED BANK CREEK
5.17M SOUTH OF LA 8, Vernon, LA
Built 1992 Load: 39.9 t ADT: 1,480
LA0111
GoodOver: CLEAR CREEK
1.13M SOUTH OF LA 8, Vernon, LA
Built 1992 Load: 39.9 t ADT: 1,480
LA0111
GoodOver: PEARL CREEK
.4 MI NORTH OF LA 8, Vernon, LA
Built 1982 Load: 39.9 t ADT: 426
Showing 9,901-9,950 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 |