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
E Grant St
GoodOver: CORPORATION CANAL
E. GRANT ST., East Baton Rouge, LA
Built 1992 Load: 27.9 t ADT: 350
McCaleb Rd
GoodOver: ASH SLOUGH
LOG MI 2.44 FR 282 TO 187, Franklin, LA
Built 2003 Load: 27.9 t ADT: 250
Kateland Rd.
GoodOver: PATASSA BAYOU
1.16 M. E. OF LA 8, Grant, LA
Built 2002 Load: 27.9 t ADT: 200
Dulles Dr.
GoodOver: MINE BRANCH COULEE
0.27 MI W. OF LA 3025, Lafayette, LA
Built 1990 Load: 27.9 t ADT: 2,140
Laural Valley Rd
GoodOver: CANAL
3.4M NE OF LA 308, Lafourche, LA
Built 1993 Load: 27.9 t ADT: 1,401
Blanchard St
GoodOver: CADNEY BAYOU TRIBUTARY
0.5 M. N. OF LA 494, Natchitoches, LA
Built 2000 Load: 27.9 t ADT: 392
General de Gaulle
GoodOver: ALGIERS CANAL
0.2MI.E.OF HOLIDAY D, Orleans, LA
Built 1960 Load: 27.9 t
CASINO BLVD/OFF-RA
GoodOver: CITY STREET/RAILROAD
1.2 MI E OF PREES DR, Orleans, LA
Built 1998 Load: 27.9 t ADT: 48,620
RICHARDSON RD
GoodOver: DRAIN TO BAYOU CHOUDRANT
0.25 MILES EAST OF LA 837, Ouachita, LA
Built 2011 Load: 27.9 t ADT: 180
Washboard Rd
GoodOver: HAW CREEK
.70 MI E OF LA 623, Rapides, LA
Built 1999 Load: 27.9 t ADT: 360
Rohner Rd
GoodOver: WILLIAMS BRANCH
1.8 M N OF LA 43, St. Helena, LA
Built 1989 Load: 27.9 t ADT: 200
N. Oak St
GoodOver: PONCHATOULA CREEK
4.0 M NE OF RT 190 EXIT, Tangipahoa, LA
Built 1990 Load: 27.9 t ADT: 2,780
Wardline Rd
GoodOver: NATALBANY RIVER
3M N OF PUMPKIN CENTER EX, Tangipahoa, LA
Built 1993 Load: 27.9 t ADT: 1,259
SAVAGE FORKS RD
GoodOver: BIG BRANCH
1.0 M. S. OF END LA 1211, Vernon, LA
Built 1984 Load: 27.9 t ADT: 290
SLAGLE LOOP
GoodOver: BIG BRANCH
0.9 M. N. OF LA 8 NEAR SL, Vernon, LA
Built 1984 Load: 27.9 t ADT: 330
S. Byrd
GoodOver: YELLOW BRANCH
3.0 M E OF LA 1075, Washington, LA
Built 1989 Load: 27.9 t ADT: 917
Elm Grove Rd
GoodOver: STUMPY BAYOU
2 MI. NE ERWINVILLE, LA., West Baton Rouge, LA
Built 1984 Load: 27.9 t ADT: 150
St Romain Rd
GoodOver: TIGER BAYOU
4.4 MI NE ERWINVILLE, LA, West Baton Rouge, LA
Built 1984 Load: 27.9 t ADT: 250
Mosley Dr-Dunn St
GoodOver: PORT DELUCE CREEK
0.41 MI. WEST OF US 167, Winn, LA
Built 2000 Load: 27.9 t ADT: 530
I0049
GoodOver: I-49 OVER 63RD. STREET
I-49 @ 63RD ST (Loc Rd), Caddo, LA
Built 1988 Load: 28.1 t ADT: 87,568
LA0641
GoodOver: MC WILLIAMS PIPELINE XIN
LA 641 1.4 MI S OF I-10, St. James, LA
Built 1982 Load: 28.1 t ADT: 6,427
W Worthy Rd
GoodOver: BAYOU FRANCOIS TRIB.
1.5 MILES WEST OF LA 44, Ascension, LA
Built 2007 Load: 28.2 t ADT: 120
Laurel Ridge Rd
GoodOver: BABIN CANAL
1.8 MI NE LA22-LA429 JCT, Ascension, LA
Built 1988 Load: 28.2 t ADT: 150
Foster Arbor Rd
GoodOver: TOPY CREEK
3.1 MI. WEST OF LA 153, Bienville, LA
Built 2000 Load: 28.2 t ADT: 100
Danville Rd
GoodOver: BRUSH CREEK
1.0 MI. N. E. OF LA 4, Bienville, LA
Built 1985 Load: 28.2 t ADT: 106
North Lakeshore Dr
GoodOver: TRIBUTARY TO CROSS LAKE
2.6 MI SW OF LA 173, Caddo, LA
Built 1992 Load: 28.2 t ADT: 76
Poole Road (South)
GoodOver: VIDALIA CANAL
1.8M SW of LA 15, Concordia, LA
Built 2003 Load: 28.2 t ADT: 150
Willie F Frazier
GoodOver: CANADIAN BAYOU
5.5 MI N OF US 84, De Soto, LA
Built 1984 Load: 28.2 t ADT: 50
MARTIN MUSE RD
GoodOver: BAYOU
1.0 MI N of LA 580, East Carroll, LA
Built 2009 Load: 28.2 t ADT: 125
Humphries Rd
GoodOver: WEST TURKEY CREEK
LOG MI 0.10 FR 237 TO 240, Franklin, LA
Built 2005 Load: 28.2 t ADT: 150
US0167
GoodOver: MOSELY CREEK
5.33 MI. SOUTH OF LA 500, Grant, LA
Built 2010 Load: 28.2 t ADT: 7,084
Frazier Ceme Rd
GoodOver: MOCCASIN BRANCH
1.5 MI. WEST OF US 167, Grant, LA
Built 2009 Load: 28.2 t ADT: 100
US0090
GoodOver: GROUND
0.5 MI SOUTHWEST OF MISSI, Jefferson, LA
Built 2013 Load: 28.2 t ADT: 6,160
LAPALCO BLVD
GoodOver: SEGNETTE BAYOU
0.9 MI. S. OF US 90 B, Jefferson, LA
Built 1977 Load: 28.2 t ADT: 2,000
WAFER RD
GoodOver: WAFER CREEK
1.3 MI NE of LA 577, Lincoln, LA
Built 1990 Load: 28.2 t ADT: 132
WAFER RD
GoodOver: WAFER BAYOU
1.2 MI NE of LA 544, Lincoln, LA
Built 1999 Load: 28.2 t ADT: 132
LA0120
GoodOver: COX BRANCH
1.2 MILES N OF JCT LA 6, Natchitoches, LA
Built 2009 Load: 28.2 t ADT: 1,715
US0080
GoodOver: CREEK
9.91 MI E of US 80, Ouachita, LA
Built 2009 Load: 28.2 t ADT: 3,275
CAPLES RD
GoodOver: CHENIERE CREEK
1.72 MI S of LA 546, Ouachita, LA
Built 1992 Load: 28.2 t ADT: 159
Bayou Rd
GoodOver: BAYOU BOEUF
0.2 MILES NORTH OF US 71, Rapides, LA
Built 2015 Load: 28.2 t ADT: 200
BRUSHY CREEK ROAD
GoodOver: BRUSHY CREEK
2.3 MI. S. OF LA 507, Red River, LA
Built 2017 Load: 28.2 t ADT: 95
Parish Rd 410
GoodOver: PRAIRIE RIVER
4.6 MI W OF LA 1, Red River, LA
Built 1997 Load: 28.2 t ADT: 229
BEACH RD
GoodOver: CYPRESS CREEK
1.3 MI SE of US 80, Richland, LA
Built 1991 Load: 28.2 t ADT: 120
US0171
GoodOver: BAYOU SCIE TRIBUTARY
1 MILE SOUTH OF LA 1216, Sabine, LA
Built 2007 Load: 28.2 t ADT: 3,273
US0171
GoodOver: BAYOU SCIE TRIBUTARY
1 MI. SOUTH OF LA 1216, Sabine, LA
Built 2007 Load: 28.2 t ADT: 4,790
US0171
GoodOver: BAYOU SCIE RELIEF
0.31 MI SOUTH OF LA 1216, Sabine, LA
Built 2007 Load: 28.2 t ADT: 4,790
US0171
GoodOver: BAYOU SCIE
0.1 MI SOUTH OF LA 1216, Sabine, LA
Built 2007 Load: 28.2 t ADT: 3,045
US0171
GoodOver: BAYOU SCIE
0.1 MI SOUTH OF LA 1216, Sabine, LA
Built 2007 Load: 28.2 t ADT: 4,790
US0171
GoodOver: BAYOU SCIE RELIEF
0.31 MI. SOUTH OF LA 1216, Sabine, LA
Built 2007 Load: 28.2 t ADT: 3,045
HERRINGTON RD
GoodOver: MIDDLE CREEK
APP. 5 MI. NE OF LA 118, Sabine, LA
Built 2004 Load: 28.2 t ADT: 60
Showing 7,451-7,500 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 |