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
LA0577
GoodOver: CREEK
1.4 MILES EAST OF LA 585, West Carroll, LA
Built 2014 Load: 32.4 t ADT: 365
Skinner Ln
GoodOver: LYON BAYOU
2.0 MI S OF LA 2, West Carroll, LA
Built 2016 Load: 32.4 t ADT: 952
Odis Wade Rd
GoodOver: LYON BAYOU
2.0 MI NE OF LA 589, West Carroll, LA
Built 2016 Load: 32.4 t ADT: 384
Mitchiner Rd
GoodOver: DRAIN TO LITTLE CREEK
0.1 MILES WEST OF LA 17, West Carroll, LA
Built 2014 Load: 32.4 t ADT: 248
LA0002
GoodOver: CREEK
2.6 MI EAST OF LA 585, West Carroll, LA
Built 1932 Load: 32.4 t ADT: 2,485
Chop Rd
GoodOver: DRAIN TO TIGER BAYOU
.4 MI N HWY 17 AT TERRY, West Carroll, LA
Built 1986 Load: 32.4 t ADT: 176
Burnett Rd
GoodOver: GASPERS CREEK
0.35 MI W OF US 61, West Feliciana, LA
Built 2017 Load: 32.4 t ADT: 110
LA0010
GoodOver: HAMMER CREEK
7.25 Mi E of US 61, West Feliciana, LA
Built 1948 Load: 32.4 t ADT: 1,585
US0167
GoodOver: CREEK
2.76 MI. NORTH OF LA 505, Winn, LA
Built 1960 Load: 32.4 t ADT: 5,367
US0167
GoodOver: ANTWINE CREEK
4.4 MI NORTH OF LA 126, Winn, LA
Built 1952 Load: 32.4 t ADT: 5,107
US0167
GoodOver: CREEK
1.39 MI. NORTH OF LA 126, Winn, LA
Built 2010 Load: 32.4 t ADT: 5,367
US0167
GoodOver: ANTWINE CREEK
4.86 MI. NORTH OF LA 126, Winn, LA
Built 2010 Load: 32.4 t ADT: 5,367
LA0127
GoodOver: CREEK
10.39 M. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 32.4 t ADT: 183
LA0127
GoodOver: CREEK
9.48 MI. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 32.4 t ADT: 183
LA0127
GoodOver: CREEK
8.63 MI. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 32.4 t ADT: 183
LA0472
GoodOver: LITTLE BEAR CREEK
0.34 NORTH OF LA 1230, Winn, LA
Built 2010 Load: 32.4 t ADT: 332
US0084
GoodOver: PORT DE LUCE CREEK
3.1 MI EAST OF LA 1228, Winn, LA
Built 1997 Load: 32.4 t ADT: 5,495
US0167
GoodOver: DUMP CREEK
7.79 MI. NORTH OF LA 500, Winn, LA
Built 1988 Load: 32.4 t ADT: 11,712
LA0126
GoodOver: KIESCHE CREEK TRIB.
2.2 MI EAST JCT US 167, Winn, LA
Built 1996 Load: 32.4 t ADT: 687
LA0126
GoodOver: FLAT CREEK TRIBUTARY
4.7 MI EAST OF LA 34, Winn, LA
Built 1996 Load: 32.4 t ADT: 477
LA0156
GoodOver: SPRING BRANCH
0.44 MI. WEST OF LA 1233, Winn, LA
Built 1952 Load: 32.4 t ADT: 525
Spillway
GoodOver: SONNETT CREEK
1.15 MI. NORTH OF US 84, Winn, LA
Built 1992 Load: 32.4 t ADT: 170
US0090
GoodOver: MERMENTAU RIVER
1.5 MI. WEST OF LA 92, Acadia, LA
Built 1980 Load: 32.7 t ADT: 2,899
Henry Rd.
GoodOver: Prime Gully
1.1 Mi. W. of La 13, Acadia, LA
Built 1996 Load: 32.7 t ADT: 288
Homer Adams Rd
GoodOver: Lyons Point Gully
0.7 Mi. S. of La 92, Acadia, LA
Built 1996 Load: 32.7 t ADT: 384
LA0377
GoodOver: WHISKEY CHITTO CREEK
2.1 MI N OF LA 26, Allen, LA
Built 1999 Load: 32.7 t ADT: 502
S Hodgeson Rd
GoodOver: BAYOU CONWAY
0.9 Mi S of LA 30, Ascension, LA
Built 1997 Load: 32.7 t ADT: 150
Aymond Rd
GoodOver: NEW RIVER
2.5 MI NE OF SORRENTO, Ascension, LA
Built 1998 Load: 32.7 t ADT: 25
South Irma Blvd
GoodOver: BAYOU FRANCOIS
0.5 Mi N of LA 939, Ascension, LA
Built 2003 Load: 32.7 t ADT: 1,200
South Irma Blvd
GoodOver: BAYOU FRANCOIS
0.5 Mi N of LA 939, Ascension, LA
Built 2003 Load: 32.7 t ADT: 1,200
BIA ROUTE 3015
GoodOver: UNKNOWN STREAM
.2KM EAST OF STATE HWY107, Avoyelles, LA
Built 2016 Load: 32.7 t ADT: 250
Ruby-Ctpoint Rd
GoodOver: WIGGINS BAYOU
0.87 MILES WEST OF LA 107, Avoyelles, LA
Built 2012 Load: 32.7 t ADT: 140
LA0113
GoodOver: OUISKA CHITTO CREEK
1.4 MI. N OF LA 26, Beauregard, LA
Built 1996 Load: 32.7 t ADT: 709
LA0113
GoodOver: QUISKA CHITTO CR RELIEF
1.8 MI. N OF LA 26, Beauregard, LA
Built 1996 Load: 32.7 t ADT: 709
I0220
GoodOver: SWAN LAKE ROAD
1.9 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 32.7 t ADT: 35,972
307 HQ BRIDGE
GoodOver: MACKS BAYOU
0.6 MI S OF TWINING RD, Bossier, LA
Built 1984 Load: 32.7 t ADT: 250
307 HQ PARKING LOT
GoodOver: MACKS BAYOU
0.7 MI S OF TWINING RD, Bossier, LA
Built 2006 Load: 32.7 t ADT: 200
FLAG LAKE BRIDGE
GoodOver: FLAG LAKE SPILLWAY
0.8 MI E OF RANGE ROAD, Bossier, LA
Built 1997 Load: 32.7 t ADT: 200
ACCESS ROAD
GoodOver: MACKS BAYOU
0.9 MI SE DAVIS AVE, Bossier, LA
Built 2002 Load: 32.7 t ADT: 2
ILS ROAD
GoodOver: MACKS BAYOU
1.1 MI SE OF 307TH HQ BLD, Bossier, LA
Built 2017 Load: 32.7 t ADT: 2
RANGE ROAD
GoodOver: RED CHUTE BAYOU
1.8 MI E LINDBERG RD, Bossier, LA
Built 2005 Load: 32.7 t ADT: 2,000
I0020
GoodOver: KCS RR & ACCESS RD
.5 MI EAST OF US 80, Caddo, LA
Built 1994 Load: 32.7 t ADT: 87,567
I0020
GoodOver: KCS RR & ACCESS ROAD
.6 MI EAST OF US 80, Caddo, LA
Built 1994 Load: 32.7 t ADT: 87,567
I0049
GoodOver: CYRPESS BAYOU
4.0 MI S OF LA 526 INTG, Caddo, LA
Built 1989 Load: 32.7 t ADT: 29,022
I0049
GoodOver: ST. VINCENT AVENUE
2.58 M. NORTH OF LA 511, Caddo, LA
Built 1994 Load: 32.7 t ADT: 87,568
DILLINGHAM DRIVE
GoodOver: PIERREMONT DITCH
0.24 MI N. OF OAKHILL ST., Caddo, LA
Built 1996 Load: 32.7 t
EVANGELINE STREET
GoodOver: PIERREMONT DITCH
0.33 MI E OF FAIRFIELD AV, Caddo, LA
Built 1996 Load: 32.7 t
SOUTH LAKESHORE DR
GoodOver: CROSS LAKE TRIB
6.00 M EAST OF LA 169, Caddo, LA
Built 1991 Load: 32.7 t ADT: 1,352
JIM KENT RD
GoodOver: LITTLE CREEK
0.4 MI S of MILLER RD, Calcasieu, LA
Built 2018 Load: 32.7 t ADT: 65
US0165-N
GoodOver: BALLARD BAYOU
0.9 Mi S of LA1182, Caldwell, LA
Built 2007 Load: 32.7 t ADT: 12,669
Showing 8,601-8,650 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 |