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
Carolyn St
GoodOver: CADNEY BAYOU TRIB. II
0.6 MILES NORTH OF LA 494, Natchitoches, LA
Built 2001 Load: 25.6 t ADT: 102
DIAGONAL DR
GoodOver: CITY PARK LAGOON
O.1MI.N.OF MAGNOLIA, Orleans, LA
Built 1939 Load: 25.6 t
LA0497
GoodOver: LITTLE SPRING CREEK
0.7 MI. NORTH OF US 165, Rapides, LA
Built 1984 Load: 25.6 t ADT: 1,135
RUSSEL RD
GoodOver: BAYOU SCIE TRIBUTARY
0.78 MI. SE OF LA 120, Sabine, LA
Built 2001 Load: 25.6 t ADT: 170
I0055
GoodOver: SWAMP
12.30 MILES NORTH OF JCT, St. John the Baptist, LA
Built 2008 Load: 25.6 t ADT: 27,551
I0055
GoodOver: SWAMP
4.50 MILES NORTH OF JCT I, St. John the Baptist, LA
Built 2008 Load: 25.6 t ADT: 27,551
I0055
GoodOver: SWAMP
4 MILES SOUTH OF JCT I55, Tangipahoa, LA
Built 2008 Load: 25.6 t ADT: 17,665
WEBSTER MARICLE RD
GoodOver: SIXMILE CREEK
0.5 M. W. OF LA 113, Vernon, LA
Built 1993 Load: 25.6 t ADT: 250
HECKER RD
GoodOver: BAYOU SERPENT RELIEF
3.7 MI WEST OF LA 383, Calcasieu, LA
Built 2001 Load: 25.9 t ADT: 574
Columbia Rd
GoodOver: Rawson Creek
0.1 Mi S of Roy Watson Rd, Catahoula, LA
Built 1986 Load: 25.9 t ADT: 50
Aplin Road
GoodOver: Ford Creek
1 Mi N of Red Cut Road, Catahoula, LA
Built 1989 Load: 25.9 t ADT: 50
Springridge Rd
GoodOver: SUGAR CREEK
0.3 Mi S of Columbia-H Rd, Catahoula, LA
Built 1989 Load: 25.9 t ADT: 40
Alderson Rd
GoodOver: TRIB. TO GREER CREEK
2.5 MI. E OF HWY 9, Claiborne, LA
Built 1997 Load: 25.9 t ADT: 25
D A Biglane Rd
GoodOver: VIDALIA CANAL
1.2 M N of LA 131, Concordia, LA
Built 1997 Load: 25.9 t ADT: 10
LA0013
GoodOver: DRAIN
0.48 MI NORTH OF LA 104, Evangeline, LA
Built 1970 Load: 25.9 t ADT: 5,382
Grays Creek Rd
GoodOver: GRAYS CREEK
5.67 M. N. OF JCT US 167, Grant, LA
Built 2003 Load: 25.9 t ADT: 250
Grays Creek Rd
GoodOver: GRAYS CREEK
5.52 M. N. OF JCT. US 167, Grant, LA
Built 2003 Load: 25.9 t ADT: 250
US0090
GoodOver: Darnell Rd
3.08 MI E of LA 83, Iberia, LA
Built 2002 Load: 25.9 t ADT: 11,497
US0090
GoodOver: Darnell Rd
2.8 MI W of LA 85, Iberia, LA
Built 2002 Load: 25.9 t ADT: 10,090
Industrial Pkwy
GoodOver: DES POCHES COULEE
0.38 Mi NE of LA 182, Lafayette, LA
Built 2012 Load: 25.9 t ADT: 2,700
Amhurst Rd.
GoodOver: ILE DES CANNES COULEE
0.2 MI S. of Allister Rd, Lafayette, LA
Built 2002 Load: 25.9 t ADT: 450
Vatican Rd.
GoodOver: CREEK
0.5 MI W of LA 93, Lafayette, LA
Built 2002 Load: 25.9 t ADT: 800
Magnolia Loop
GoodOver: ROUTH CREEK
LOGMI 0.66 FR 80 TO ODE, LaSalle, LA
Built 2000 Load: 25.9 t ADT: 50
Moffett Rd
GoodOver: DEVILS CREEK
LOGMI 0.83 FR ODE TO 63, LaSalle, LA
Built 2000 Load: 25.9 t ADT: 100
Wh Sulphur Spr Rd
GoodOver: KITTERLINE CREEK
LOGMI 2.87 FR 94 TO 101, LaSalle, LA
Built 1999 Load: 25.9 t ADT: 200
Wh Sulphur Spr Rd
GoodOver: HURRICANE CREEK
LOGMI 4.05 FR 94 TO 101, LaSalle, LA
Built 1998 Load: 25.9 t ADT: 220
Snyder Rd
GoodOver: TROUT CREEK
LOGMI 4.35 FR 507 TO 172, LaSalle, LA
Built 2000 Load: 25.9 t ADT: 100
W Baker St
GoodOver: CREEK
0.3 M W of US 84/LA 8, LaSalle, LA
Built 1997 Load: 25.9 t ADT: 25
Tram Rd
GoodOver: BAYOU FUNNY LOUIS
1.45 LOG MI FR 518 TO 450, LaSalle, LA
Built 1987 Load: 25.9 t ADT: 50
Cowart St
GoodOver: ELI COOPER BRIDGE CREEK
LOG MI 1.15 FR 358 TO ODE, LaSalle, LA
Built 1998 Load: 25.9 t ADT: 40
Taylor Chapel Rd
GoodOver: FUNNY LOUIS BAYOU
1.2 MI W of La 127, LaSalle, LA
Built 1999 Load: 25.9 t ADT: 110
Reeves Cutoff
GoodOver: Bayou Funny Louis
05. MI N of La 503, LaSalle, LA
Built 1997 Load: 25.9 t ADT: 50
Rainey Arena Rd
GoodOver: BAYOU FUNNY LOUIS
LOGMI 0.38 FR 648 TO 467, LaSalle, LA
Built 1999 Load: 25.9 t ADT: 60
Mixon Rd
GoodOver: CHICKASAW CREEK
LOGMI 1.67 FR 612 TO 618, LaSalle, LA
Built 1999 Load: 25.9 t ADT: 50
Sandy Dr
GoodOver: SANDY CREEK
NORTH OF LA 125, LaSalle, LA
Built 1992 Load: 25.9 t ADT: 120
Sandy Dr
GoodOver: SANDY CREEK
LOGMI 1.91 FR 594 TO 598, LaSalle, LA
Built 2000 Load: 25.9 t ADT: 210
Harmony Rd
GoodOver: MCKIMS CREEK
1.0 MILE NORTH OF LA 478, Natchitoches, LA
Built 1999 Load: 25.9 t ADT: 54
Harmony Rd
GoodOver: MCKIMS CREEK
1.2 MILES NORTH OF LA 478, Natchitoches, LA
Built 1999 Load: 25.9 t ADT: 54
Cemetery Road
GoodOver: CYPRESS BAYOU
0.03 M W LITTLE RIVER RD., Natchitoches, LA
Built 2003 Load: 25.9 t ADT: 27
Harmony Rd
GoodOver: PROVENCAL CREEK
0.8 MILES EAST OF LA 117, Natchitoches, LA
Built 1999 Load: 25.9 t ADT: 54
Old River Rd
GoodOver: OLD RIVER
0.02 M W OF OLD RIVER ROA, Natchitoches, LA
Built 2000 Load: 25.9 t ADT: 102
Goldonna Rd
GoodOver: BIG FORDOCHE CREEK
3.50 M. S. OF LA 156, Natchitoches, LA
Built 1984 Load: 25.9 t ADT: 173
Wall Williams Rd
GoodOver: D'arbonne Bayou
0.8 Mi West of LA 143, Ouachita, LA
Built 2023 Load: 25.9 t ADT: 350
AVANT RD
GoodOver: STEEP BAYOU
0.5 MI N of US 80 E, Ouachita, LA
Built 1996 Load: 25.9 t ADT: 125
Ten Mile Rd
GoodOver: TEN MILE CREEK
0.25 MILE WEST OF LA 462, Rapides, LA
Built 2001 Load: 25.9 t ADT: 300
HILL RD
GoodOver: DRY FORK
0.4 MI W of US 425, Richland, LA
Built 2011 Load: 25.9 t ADT: 200
THOMAS RD
GoodOver: EAST FORK CREEK
0.1 MI E of LA 183, Richland, LA
Built 2011 Load: 25.9 t ADT: 75
TORO RD
GoodOver: HORSEPEN CREEK
APP. 3.25 M. N. OF LA 392, Sabine, LA
Built 1996 Load: 25.9 t ADT: 300
LAURENCE RD
GoodOver: HAMBY CREEK
0.1 MI. SOUTH OF LA 473, Sabine, LA
Built 1992 Load: 25.9 t ADT: 120
OLD HWY 476 RD
GoodOver: CANEY CREEK
.9 MI WEST OF LA 191, Sabine, LA
Built 2004 Load: 25.9 t ADT: 310
Showing 7,251-7,300 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 |