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
LA0660
GoodOver: BAYOU TERREBONNE
2.0 MI S OF US 90, Terrebonne, LA
Built 2019 Load: 74.5 t ADT: 10,321
LA0024
GoodOver: BAYOU TERREBONNE
1.45 MI. S. OF LA 660, Terrebonne, LA
Built 1998 Load: 74.5 t ADT: 22,400
US0090
GoodOver: DRAIN CANAL
ONE MILE EAST OF LA 24, Terrebonne, LA
Built 1980 Load: 74.5 t ADT: 12,998
US0090
GoodOver: BAYOU BLUE
.5 MILES SOUTH US 90, Terrebonne, LA
Built 1985 Load: 74.5 t ADT: 2,230
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 258
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 4,583
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 280
LA0024
GoodOver: BAYOU TERREBONNE
0.01 M W OF LA 659, Terrebonne, LA
Built 1990 Load: 74.5 t ADT: 280
LA0316
GoodOver: BAYOU TERREBONNE
.01 MI. @ LA.24, Terrebonne, LA
Built 1996 Load: 74.5 t ADT: 7,165
US0090
GoodOver: L'OURSE BAYOU
0.02 MI E OF LA 662, Terrebonne, LA
Built 1998 Load: 74.5 t ADT: 2,629
US0090
GoodOver: L'OURSE BAYOU
0.42 MI N OF US 90 WB, Terrebonne, LA
Built 1998 Load: 74.5 t ADT: 2,629
Reginald Rd
GoodOver: Drainage ditch
1 Mi E of La 339, Vermilion, LA
Built 2011 Load: 74.5 t ADT: 483
LA0028
GoodOver: CYPRESS BAYOU
3.9 MI. EAST OF LA 465, Vernon, LA
Built 2013 Load: 74.5 t ADT: 6,952
LA0010
GoodOver: TEN MILE CREEK TRIB.
3.64 MI. EAST OF LA 377, Vernon, LA
Built 1941 Load: 74.5 t ADT: 2,773
LA0111
GoodOver: DRAIN
.71 MI E OF W JCT LA 392, Vernon, LA
Built 1999 Load: 74.5 t ADT: 801
LA0111
GoodOver: BLUE CREEK
1.4 M. W. E. JCT. LA 392, Vernon, LA
Built 1995 Load: 74.5 t ADT: 801
LA0111
GoodOver: LITTLE SANDY CREEK
.28 M. E. E. JCT. LA 392, Vernon, LA
Built 1994 Load: 74.5 t ADT: 937
LA0111
GoodOver: DRAIN
1.0 MI. EAST OF LA 392, Vernon, LA
Built 1995 Load: 74.5 t ADT: 937
LA0111
GoodOver: DRAIN
1.3 MI. EAST OF LA 392, Vernon, LA
Built 1995 Load: 74.5 t ADT: 937
LA0111
GoodOver: FRANKLIN BRANCH
0.5 MI. WEST OF US 171, Vernon, LA
Built 1995 Load: 74.5 t ADT: 937
LA0111
GoodOver: UNNAMED BRANCH
1.04 MI EAST JCT US 171, Vernon, LA
Built 1997 Load: 74.5 t ADT: 937
LA0392
GoodOver: BRUSHY CREEK
0.1 MILE SOUTH OF US 171, Vernon, LA
Built 1986 Load: 74.5 t ADT: 475
LA0465
GoodOver: BLACKJACK BRANCH
.6 M E OF JCT LA 117, Vernon, LA
Built 2000 Load: 74.5 t ADT: 115
LA0465
GoodOver: MAYHAW BRANCH
2.32 M. E. OF LA 117, Vernon, LA
Built 2000 Load: 74.5 t ADT: 115
LA0465
GoodOver: UNNAMED BRANCH
0.24 MI. EAST OF LA 489, Vernon, LA
Built 1994 Load: 74.5 t ADT: 500
SMITHBROOK RD
GoodOver: COOPER CREEK
0.13 M. N. OF JCT LA 8, Vernon, LA
Built 1989 Load: 74.5 t
M. Thomas Rd
GoodOver: CREEK
3 MILES EAST OF LA 1072, Washington, LA
Built 2014 Load: 74.5 t ADT: 215
Magehee Rd
GoodOver: CREEK
1 MILE NORTH OF LA 439, Washington, LA
Built 2013 Load: 74.5 t ADT: 267
LA0127
GoodOver: CREEK
11.4 MI. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 74.5 t ADT: 183
LA0127
GoodOver: CREEK
9.78 MI. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 74.5 t ADT: 183
LA0499
GoodOver: DUG CREEK
2.55 MI N JCT LA 126, Winn, LA
Built 1996 Load: 74.5 t ADT: 114
LA0127
GoodOver: CREEK
3.12 MI NW CALDWELL LINE, Winn, LA
Built 2002 Load: 74.5 t ADT: 305
LA0127
GoodOver: TANYARD CREEK
6.65 MI. NW CALDWELL LINE, Winn, LA
Built 2002 Load: 74.5 t ADT: 183
US0061
GoodOver: BATON ROUGE BAYOU
US 61, East Baton Rouge, LA
Built 1979 Load: 75.3 t ADT: 16,910
LA0001
GoodOver: MARSH
LA 1 1.5 MILES SOUTH OF B, Lafourche, LA
Built 2009 Load: 76.5 t ADT: 1,060
Sherwood Forest Bl
GoodOver: JONES CREEK
0.4 MI N of LA 426, East Baton Rouge, LA
Built 2000 Load: 78.1 t ADT: 26,405
WEEMS RD
GoodOver: LITTLE CREEK
00.20 MI. N. OF US 80, Richland, LA
Built 2019 Load: 78.1 t ADT: 234
HOLLY SPRINGS ROAD
GoodOver: TRIB TO BIRDS CREEK
VE 948 374, Vernon, LA
Built 1978 Load: 83.6 t ADT: 200
PAUL DR
GoodOver: 20 ARPENT CANAL
0.1 MI N OF LA 39, St. Bernard, LA
Built 2016 Load: 87.2 t ADT: 950
ARTILLERY ROAD
GoodOver: BIRDS CREEK
VE 899 428, Vernon, LA
Built 2008 Load: 90.1 t ADT: 1,000
I0049
GoodOver: MCCAIN CR TRIB
3.82 MI S OF LA 1, Caddo, LA
Built 2016 Load: 94.3 t ADT: 87,567
Showing 11,251-11,300 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 |