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
LA0041
GoodOver: DRAIN
1.5 M NW OF US 11, St. Tammany, LA
Built 1968 Load: 43.5 t ADT: 11,342
LA0014
GoodOver: COULEE
1.52 MI E.of W JC LA 14-B, Vermilion, LA
Built 1999 Load: 43.5 t ADT: 12,903
US0171
GoodOver: CASTOR BAYOU
5.4 MI NORTH OF LA 10, Vernon, LA
Built 1975 Load: 43.5 t ADT: 11,450
US0171
GoodOver: CASTOR BAYOU
5.4 MI NORTH OF LA 10, Vernon, LA
Built 1975 Load: 43.5 t ADT: 11,450
US0171
GoodOver: SALES BRANCH
.25 MI NORTH OF LA 1211, Vernon, LA
Built 1975 Load: 43.5 t ADT: 17,200
US0171
GoodOver: WEST ANACOCO CREEK
11.6 MI NORTH OF LA 8, Vernon, LA
Built 1992 Load: 43.5 t ADT: 4,242
US0171
GoodOver: WEST ANACOCO CREEK
11.6 MI NORTH OF LA 8, Vernon, LA
Built 1994 Load: 43.5 t ADT: 6,952
LA0010
GoodOver: SIX MILE CREEK
1.21 MI. WEST OF LA 463, Vernon, LA
Built 1992 Load: 43.5 t ADT: 1,367
LA0111
GoodOver: BLUE CREEK
2.9 M. E. W. JCT. LA 392, Vernon, LA
Built 1995 Load: 43.5 t ADT: 801
LA0113
GoodOver: TEN MILE CREEK
6.1 MI EAST OF LA 10, Vernon, LA
Built 1984 Load: 43.5 t ADT: 822
LA0076
GoodOver: POYDRAS BAYOU
110 Ft E of LA 413, West Baton Rouge, LA
Built 1971 Load: 43.5 t ADT: 7,562
US0084
GoodOver: COULEY CREEK
.7 MI EAST OF LA 477, Winn, LA
Built 1997 Load: 43.5 t ADT: 4,081
US0084
GoodOver: COULEY CREEK
5.5 MI EAST OF LA 477, Winn, LA
Built 1997 Load: 43.5 t ADT: 2,963
US0084
GoodOver: WOLF CREEK
11.2 MI EAST OF LA 477, Winn, LA
Built 1998 Load: 43.5 t ADT: 2,963
US0084
GoodOver: PORT DE LUCE CREEK
3.0 MI EAST OF LA 1228, Winn, LA
Built 1997 Load: 43.5 t ADT: 5,495
US0084
GoodOver: DUGDEMONA RIVER RELIEF
0.69 MI EAST JCT. US 167, Winn, LA
Built 1996 Load: 43.5 t ADT: 4,317
US0084
GoodOver: SANDY CREEK
3.3 MI EAST OF LA 124, Winn, LA
Built 1998 Load: 43.5 t ADT: 891
REEDS BRIDGE ROAD
GoodOver: CALCASIEU RIVER RELIEF
2.0 MI EAST OF US 165, Allen, LA
Built 2023 Load: 43.7 t ADT: 300
Leo Morrow Rd
GoodOver: Drainage Ditch
1.6 Mi S of LA 361, Avoyelles, LA
Built 2021 Load: 43.7 t ADT: 75
Beauboeuf Rd
GoodOver: Drainage Creek
0.1 Mi NE of LA 1192, Avoyelles, LA
Built 2023 Load: 43.7 t ADT: 100
SWAN LAKE RD.(N)
GoodOver: FLAT RIVER
5.1 MI N OF I-220, Bossier, LA
Built 2020 Load: 43.7 t ADT: 2,792
Helen M. Road
GoodOver: Drain
.001 Mi. E of Helen Rd, East Baton Rouge, LA
Built 2020 Load: 43.7 t ADT: 1,994
LowWater Bridge Rd
GoodOver: BAYOU MACON RIVER
FRANKLIN PH RD NO 399, Franklin, LA
Built 1988 Load: 43.7 t ADT: 40
LA0001
GoodOver: BAYOU THUNDER OVERFLOW
6.8 MI E OF LA 3090, Jefferson, LA
Built 2019 Load: 43.7 t ADT: 3,305
13TH ST
GoodOver: AVENUE D CANAL
0.2 MI EAST OF BARATARIA, Jefferson, LA
Built 1996 Load: 43.7 t
Hapsburg Lane
GoodOver: Coulee
0.45 Mi W of US 167, Lafayette, LA
Built 2023 Load: 43.7 t ADT: 150
Elias G Road
GoodOver: Coulee Ile Des Cannes
0.5 Mi W of LA167, Lafayette, LA
Built 2019 Load: 43.7 t ADT: 774
LA0001
GoodOver: BAYOU THUNDER
6.2 MI E OF LA 3090, Lafourche, LA
Built 2019 Load: 43.7 t ADT: 3,305
LA0001
GoodOver: BAYOU FERBLANC
5.7 MI E OF LA 3090, Lafourche, LA
Built 2019 Load: 43.7 t ADT: 3,305
EAVES RD
GoodOver: W BRANCH DUGDEMONA RIVER
1.2 MI W OF LA 507, Lincoln, LA
Built 2019 Load: 43.7 t ADT: 150
BONNIE IDEE ROAD
GoodOver: BONNIE IDEE BAYOU
00.06 MI. W OF LA 599, Morehouse, LA
Built 2019 Load: 43.7 t ADT: 100
Morrison Rd
GoodOver: CANAL
0.2 MI E OF BULLARD AVE, Orleans, LA
Built 1995 Load: 43.7 t
Chickamaw Rd
GoodOver: BAYOU LAMOURIE
1.2 MI SOUTH OF LA 470, Rapides, LA
Built 2012 Load: 43.7 t ADT: 175
Sneed Rd
GoodOver: Toro Creek
0.4 Ml NW of La 118, Sabine, LA
Built 2020 Load: 43.7 t ADT: 125
FARMSITE RD
GoodOver: GREEN AVE CANAL
0.3 MI. S. OF LA 39, St. Bernard, LA
Built 2020 Load: 43.7 t ADT: 700
Hiram St
GoodOver: Yarbor Bayou
0.39 Mi E of LA 357, St. Landry, LA
Built 2011 Load: 43.7 t ADT: 150
Herman Dupuis Rd
GoodOver: Bayou La Rose
0.5 Mi E of LA 352, St. Martin, LA
Built 2023 Load: 43.7 t ADT: 1,232
Thorguson Dr.
GoodOver: SIMMONS BAYOU
0.7 Mi S of US 90, St. Mary, LA
Built 2013 Load: 43.7 t ADT: 1,200
11th Ave.
GoodOver: Miles Branch
0.5 Miles W. of LA 21, St. Tammany, LA
Built 2020 Load: 43.7 t ADT: 800
Black River Dr.
GoodOver: Black River
0.32 Miles North of LA 22, St. Tammany, LA
Built 2021 Load: 43.7 t ADT: 700
MNR STR ON RMP NB
GoodOver: N CAUSEWAY APPR S BOUND
0.68 MI N OF CAUSEWAY BR., St. Tammany, LA
Built 1993 Load: 43.7 t ADT: 500
Vintrano Road
GoodOver: Ponchatoula Creek
0.5 Mi. West of US 51, Tangipahoa, LA
Built 2020 Load: 43.7 t ADT: 145
Jacock RD
GoodOver: Barrow Creek
1.0 M E of US 61, West Feliciana, LA
Built 2020 Load: 43.7 t ADT: 37
Standard Mill Rd
GoodOver: Bayou Blanc
4.0 MI W of LA 35, Acadia, LA
Built 1999 Load: 44.1 t ADT: 2,448
Babin Rd
GoodOver: Bayou Narcisse
0.4 MI W of US 61, Ascension, LA
Built 2020 Load: 44.1 t ADT: 2,640
GRAYBOW ROAD
GoodOver: PALMETTO CREEK
1.1 MI EAST OF LA 3099, Beauregard, LA
Built 2023 Load: 44.1 t ADT: 1,025
LA0530
GoodOver: BLACK BAYOU
2.7 MI EAST OF LA 538, Caddo, LA
Built 2022 Load: 44.1 t ADT: 177
AMOCO ROAD
GoodOver: GOVERNMENT DITCH
0.4 MI E OF LA 14, Calcasieu, LA
Built 2023 Load: 44.1 t ADT: 215
John Thomas Lane
GoodOver: Darainage Creek
0.9 Mi. E of LA 958, East Feliciana, LA
Built 2021 Load: 44.1 t ADT: 36
W, LOYOLA
GoodOver: CANAL 7
0.6 Mi N Of VINTAGE ST, Jefferson, LA
Built 2022 Load: 44.1 t ADT: 500
Showing 10,501-10,550 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 |