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
J D Henry Rd
GoodOver: LITTLE RIVER
1.75 MILES EAST OF LA 119, Natchitoches, LA
Built 2000 Load: 41.1 t ADT: 102
Many Marthaville
GoodOver: BAYOU DUPONT TRIBUTARY
1.64 M. S. OF MAIN ST., M, Natchitoches, LA
Built 1997 Load: 41.1 t ADT: 205
FREE RD
GoodOver: SAN MIGUEL CREEK
FREE ROAD, Sabine, LA
Built 2000 Load: 41.1 t ADT: 60
LA0016
GoodOver: DRAIN
2.6 MI WEST OF JCT 449, St. Helena, LA
Built 1997 Load: 41.1 t ADT: 4,844
LA0010
GoodOver: GLADE BRANCH
10.71 MI EAST OF LA 467, Vernon, LA
Built 2007 Load: 41.1 t ADT: 1,673
COOPER CHURCH RD
GoodOver: CASTOR BAYOU
4.82M WEST OF US 171, Vernon, LA
Built 1992 Load: 41.1 t ADT: 180
Monroe Cr. Rd
GoodOver: CREEK
4.7 MILES WEST OF LA 21, Washington, LA
Built 2014 Load: 41.1 t ADT: 492
Old Arcadia Rd
GoodOver: TRIB. TO COOLEY BRANCH
0.7 MI E OF HWY 79, Webster, LA
Built 2004 Load: 41.1 t ADT: 543
US0167
GoodOver: DUGDEMONA RIVER
0.4 MI. NORTH OF LA 1231-, Winn, LA
Built 2013 Load: 41.1 t ADT: 5,107
LA0523
GoodOver: SAND BEACH BAYOU
0.8 MI W OF JCT LA 1, Caddo, LA
Built 2011 Load: 41.5 t ADT: 10,628
I0049
GoodOver: BLACK BAYOU
1.28 M. N. OF LA 530, Caddo, LA
Built 2013 Load: 41.5 t ADT: 6,846
I0049
GoodOver: BLACK BAYOU
1.28 M. N. OF LA 530, Caddo, LA
Built 2013 Load: 41.5 t ADT: 53,023
10010
GoodOver: MAPLE FORK BAYOU
1.44 MI W OF I-210, Calcasieu, LA
Built 2022 Load: 41.5 t ADT: 11,437
Mollylea Dr
GoodOver: Jones Creek
0.15 miles East of Sharp, East Baton Rouge, LA
Built 2017 Load: 41.5 t ADT: 1,500
PINE BLUFF RD
GoodOver: CYPRESS CREEK
1.9 MI. S. HWY. 557, Ouachita, LA
Built 1983 Load: 41.5 t ADT: 360
US0071
GoodOver: U.P. RR
0.5 Mi. South of US 167, Rapides, LA
Built 2019 Load: 41.5 t ADT: 6,861
LA0435
GoodOver: DRAIN
4.29 MILES EAST OF LA 36, St. Tammany, LA
Built 2010 Load: 41.5 t ADT: 4,200
LA0435
GoodOver: ABITA CREEK
4.40 MILES EAST OF LA 36, St. Tammany, LA
Built 2010 Load: 41.5 t ADT: 4,200
Amber St
GoodOver: BRIDGE OVER FRENCH BRANC
N. OF 190 AMBER ST. LM 10, St. Tammany, LA
Built 2001 Load: 41.5 t ADT: 550
BAYOU GARDENS BLVD
GoodOver: ST. LOUIS BAYOU
1.2 MI NE OF LA 660, Terrebonne, LA
Built 2017 Load: 41.5 t ADT: 6,028
LA0370
GoodOver: B PIAQUEMINE BROLE
4.2 MI EAST OF LA 1105, Acadia, LA
Built 1976 Load: 41.7 t ADT: 442
I0010
GoodOver: BAYOU DES CANNES
6.01 MI W of LA 91, Acadia, LA
Built 1961 Load: 41.7 t ADT: 24,065
LA0037
GoodOver: COMITE RIVER
3.7 M SW of LA 64&LA 37, East Baton Rouge, LA
Built 1977 Load: 41.7 t ADT: 19,515
LA0122
GoodOver: HURLEY CREEK
6.58 M E OF E JCT LA 471, Grant, LA
Built 2000 Load: 41.7 t ADT: 683
LA0122
GoodOver: IATT CREEK
6.76 M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 41.7 t ADT: 683
LA0122
GoodOver: BLACK CREEK
8.94 M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 41.7 t ADT: 683
LA0122
GoodOver: BLACK CREEK RELIEF
9.04 M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 41.7 t ADT: 683
I0010
GoodOver: ON RP TO I10EAST
0.5 MI S OF VETERANS BLVD, Jefferson, LA
Built 1967 Load: 41.7 t ADT: 15,955
I0010
GoodOver: OFF RP FROM I 10 WEST
0.6 MI NW OF I 10, Jefferson, LA
Built 1967 Load: 41.7 t ADT: 15,955
I0010
GoodOver: ON RP TO I 10 WEST
1.8 MI N OF US 61, Jefferson, LA
Built 1967 Load: 41.7 t ADT: 15,955
Meridian Ave
GoodOver: Retention pond
1.5 Mi NW of LA 3073, Lafayette, LA
Built 2014 Load: 41.7 t ADT: 280
LA0094
GoodOver: COULEE
2.05 MI EAST OF US 90, Lafayette, LA
Built 2000 Load: 41.7 t ADT: 18,293
US0090
GoodOver: OFF RAMP I
.2 MI EAST OF LA 182, Lafourche, LA
Built 1980 Load: 41.7 t ADT: 12,192
I0610
GoodOver: CANAL BLVD
.8 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 41.7 t ADT: 29,280
I0610
GoodOver: ON RP FROM BROAD STREET
.2 MI EAST OF LA 3071, Orleans, LA
Built 1975 Load: 41.7 t ADT: 7,620
I0010
GoodOver: I0010
.25 MI WEST OF I-610, Orleans, LA
Built 2000 Load: 41.7 t ADT: 137,542
I0049
GoodOver: BAYOU BOEUF
1.48 MI. SOUTH OF LA 3265, Rapides, LA
Built 1991 Load: 41.7 t ADT: 11,969
I0310
GoodOver: M P RR
.05 MI SOUTH OF LA 18, St. Charles, LA
Built 1979 Load: 41.7 t ADT: 15,642
W. 19th Ave
GoodOver: DRAINAGE CANAL
0.6 MILES SOUTH OF US 190, St. Tammany, LA
Built 2011 Load: 41.7 t ADT: 400
I0055
GoodOver: PARISH ROAD
I0055, Tangipahoa, LA
Built 1966 Load: 41.7 t ADT: 17,665
LA0113
GoodOver: LITTLE SOAPSTONE CREEK
4.3 M S OF JCT LA 10, Vernon, LA
Built 2000 Load: 41.7 t ADT: 709
LA0021
GoodOver: BOGALUSA CREEK
LA0021, Washington, LA
Built 1966 Load: 41.7 t ADT: 8,154
LA0471
GoodOver: BULGER CREEK
5.97 MI. NORTH OF LA 122, Winn, LA
Built 1995 Load: 41.7 t ADT: 673
Koran Doyline Rd
GoodOver: Clarke Bayou
0.8 MI NORTH OF LA 527, Bossier, LA
Built 2016 Load: 41.8 t ADT: 775
Tyson Rd
GoodOver: GRAY BRANCH,TYSON RD.
3.6 MI W OF HWY 71, Caddo, LA
Built 1982 Load: 41.8 t ADT: 60
LA0067
GoodOver: CYPRESS BAYOU
LA 67 APPROX. .1 MI SOUTH, East Baton Rouge, LA
Built 2009 Load: 41.8 t ADT: 19,515
US0165
GoodOver: BAYOU SERPENT
1.7 MI N OF LA 102, Jefferson Davis, LA
Built 2017 Load: 41.8 t ADT: 11,886
CHOCTAW RD
GoodOver: LEPINE CANAL
P2929510904391, Lafourche, LA
Built 2002 Load: 41.8 t ADT: 1,435
LA0028
GoodOver: BURNEY BRANCH
0.7 MILES WEST OF JCT. LA, Rapides, LA
Built 2013 Load: 41.8 t ADT: 7,065
LA0028
GoodOver: BURNEY BRANCH
0.7 MILES WEST OF JCT. LA, Rapides, LA
Built 2013 Load: 41.8 t ADT: 8,811
Showing 10,201-10,250 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 |