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
LA0015
GoodOver: TURKEY CREEK
.4 MI NORTH OF LA 864, Franklin, LA
Built 1979 Load: 40.8 t ADT: 17,677
LA0492
GoodOver: BAYOU RIGOLETTE
0.96 MI. WEST OF US 71, Grant, LA
Built 1999 Load: 40.8 t ADT: 570
LA0492
GoodOver: BAYOU DARROW
2.12 MI. WEST OF US 71, Grant, LA
Built 1999 Load: 40.8 t ADT: 570
LA0500
GoodOver: LITTLE BEAR & RATTON CR.
5.34 MI. EAST OF US 167, Grant, LA
Built 1998 Load: 40.8 t ADT: 620
LA0500
GoodOver: LOCK BRANCH
2.9 MI EAST OF LA 472, Grant, LA
Built 1998 Load: 40.8 t ADT: 620
LA0122
GoodOver: NANTACHIE CREEK
1.44 MI. EAST OF US 71, Grant, LA
Built 1982 Load: 40.8 t ADT: 683
LA0122
GoodOver: NANTACHIE CREEK RELIEF
1.55 MI. EAST OF US 71, Grant, LA
Built 1982 Load: 40.8 t ADT: 683
LA0122
GoodOver: DARTIGO CREEK
8.52 MI. EAST OF US 71, Grant, LA
Built 1993 Load: 40.8 t ADT: 683
LA0014
GoodOver: BAYOU PETITE ANSE
5.26 MI EAST OF LA 330, Iberia, LA
Built 1988 Load: 40.8 t ADT: 12,347
LA0014
GoodOver: BAYOU PETITE ANSE
1.5 MI SW of LA 676, Iberia, LA
Built 1988 Load: 40.8 t ADT: 8,404
LA0014
GoodOver: ARMENCO CANAL
0.8 MI WEST OF US 90, Iberia, LA
Built 1981 Load: 40.8 t ADT: 8,404
LA0001
GoodOver: LABUTTE BAYOU
LA 1, Iberville, LA
Built 1985 Load: 40.8 t ADT: 5,075
LA0001
GoodOver: LABUTTE BAYOU
LA 1, Iberville, LA
Built 1986 Load: 40.8 t ADT: 5,055
LA0719
GoodOver: BAYOU QUEUE DE TORTUE
2.1 Mi. N. of LA 720, Lafayette, LA
Built 1983 Load: 40.8 t ADT: 2,382
Fatima Rd
GoodOver: COULEE
0.3 Mi W of Bajat Rd, Lafayette, LA
Built 2006 Load: 40.8 t ADT: 145
LA0182
GoodOver: MCMAHON CANAL
.7 MI EAST OF US 90, Lafourche, LA
Built 1981 Load: 40.8 t ADT: 7,322
LA0182
GoodOver: BAYOU FOLSE
.01 MI EAST OF LA 653, Lafourche, LA
Built 1981 Load: 40.8 t ADT: 7,322
US0090
GoodOver: FOLSE BAYOU
2.2 MI EAST OF LA 182, Lafourche, LA
Built 1984 Load: 40.8 t ADT: 189
US0090
GoodOver: ON RAMP FROM LA308
.4 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 40.8 t ADT: 26,058
US0090
GoodOver: OFF RAMP TO LA308
.4 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 40.8 t ADT: 12,192
US0084
GoodOver: NEW UNION CREEK
0.90 M S of US 165, LaSalle, LA
Built 1983 Load: 40.8 t ADT: 1,637
US0084
GoodOver: COCHRAN CREEK
1.00 M S of US 165, LaSalle, LA
Built 1983 Load: 40.8 t ADT: 1,637
US0084
GoodOver: JUMPING GULLY CREEK
1.40 M N of LA 500, LaSalle, LA
Built 1983 Load: 40.8 t ADT: 1,675
LA0500
GoodOver: LITTLE CREEK
4.55 MI WEST OF US 84, LaSalle, LA
Built 1989 Load: 40.8 t ADT: 633
LA0500
GoodOver: BAYOU FUNNY LOUIS RELIEF
1.55 MI WEST OF US 84, LaSalle, LA
Built 1989 Load: 40.8 t ADT: 1,008
LA1036
GoodOver: HOG BAYOU
4.3 M N OF LA 442, Livingston, LA
Built 1980 Load: 40.8 t ADT: 601
I0020
GoodOver: M. P. RR
.4 MI WEST OF US 65, Madison, LA
Built 1975 Load: 40.8 t ADT: 31,481
LA0134
GoodOver: COULEE DITCH
1.2 MI EAST OF LA 139, Morehouse, LA
Built 1981 Load: 40.8 t ADT: 1,183
LA0490
GoodOver: BAYOU MAURICE
3.44 MI. SW OF LA 1, Natchitoches, LA
Built 1993 Load: 40.8 t ADT: 142
LA0490
GoodOver: BAYOU MAYO
3.67 MI. SW OF LA 1, Natchitoches, LA
Built 1993 Load: 40.8 t ADT: 142
LA0117
GoodOver: LITTLE SANDY CREEK
4.9 MI N OF JCT LA 465, Natchitoches, LA
Built 1991 Load: 40.8 t ADT: 1,513
I0049
GoodOver: YOUNGS BAYOU
1.1 MI. NORTH OF LA 6, Natchitoches, LA
Built 1986 Load: 40.8 t ADT: 18,305
I0049
GoodOver: YOUNGS BAYOU
1.1 MI. NORTH OF LA 6, Natchitoches, LA
Built 1986 Load: 40.8 t ADT: 28,142
I0049
GoodOver: LOST BAYOU
1.48 MI. NORTH OF LA 6, Natchitoches, LA
Built 1987 Load: 40.8 t ADT: 18,305
I0049
GoodOver: LOST BAYOU
1.48 MI. NORTH OF LA 6, Natchitoches, LA
Built 1987 Load: 40.8 t ADT: 28,142
I0049
GoodOver: GUMROOT BAYOU
1.66 MI. NORTH OF LA 6, Natchitoches, LA
Built 1986 Load: 40.8 t ADT: 18,305
I0049
GoodOver: GUMROOT BAYOU
1.66 MI. NORTH OF LA 6, Natchitoches, LA
Built 1986 Load: 40.8 t ADT: 28,142
I0049
GoodOver: CREEK
3.6 MI NORTH OF LA 485, Natchitoches, LA
Built 1987 Load: 40.8 t ADT: 16,334
I0049
GoodOver: HALLS BREAK CREEK
2.03 MI. SOUTH OF LA 174, Natchitoches, LA
Built 1987 Load: 40.8 t ADT: 16,334
I0049
GoodOver: HALLS BREAK CREEK
2.03 MI. SOUTH OF LA 174, Natchitoches, LA
Built 1987 Load: 40.8 t ADT: 28,142
US0090-B
GoodOver: GROUND
1.8 MI SOUTH OF I-10, Orleans, LA
Built 1960 Load: 40.8 t ADT: 7,620
LAKESHORE DR
GoodOver: LONDON AVE. CANAL
0.8 MI W OF ELYSIAN F., Orleans, LA
Built 2003 Load: 40.8 t
LA0406
GoodOver: PLANTER'S CANAL
1.71 MI NORTH OF LA 23, Plaquemines, LA
Built 1977 Load: 40.8 t ADT: 12,412
US0165
GoodOver: ROCKY BAYOU
3.37 MI. NORTH OF LA 3265, Rapides, LA
Built 1993 Load: 40.8 t ADT: 8,811
US0165
GoodOver: WILLOW BAYOU
5.57 MI. NORTH OF LA 3265, Rapides, LA
Built 1993 Load: 40.8 t ADT: 8,811
US0165
GoodOver: PECAN BAYOU
6.57 MI. NORTH OF LA 3265, Rapides, LA
Built 1993 Load: 40.8 t ADT: 17,593
US0165
GoodOver: FLAGON BAYOU RELIEF
0.44 MI. NORTH OF LA 623, Rapides, LA
Built 1984 Load: 40.8 t ADT: 20,902
US0165
GoodOver: FLAGON BAYOU
0.61 MI. NORTH OF LA 623, Rapides, LA
Built 1984 Load: 40.8 t ADT: 20,902
LA0001
GoodOver: BAYOU RAPIDES
0.37 MI. SOUTH OF US 71, Rapides, LA
Built 1993 Load: 40.8 t ADT: 7,754
US0167
GoodOver: DIVERSION CANAL
2.98 MI. SOUTH OF US 71, Rapides, LA
Built 1985 Load: 40.8 t ADT: 4,141
Showing 10,051-10,100 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 |