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
I0010
FairOver: DRAIN
2.5 M N of I-10&LA 73, Ascension, LA
Built 1975 Load: 57.3 t ADT: 60,802
MCCONATHY RD
FairOver: VERNON LAKE TRIB.
0.54 M. S. OF JCT LA 111, Vernon, LA
Built 1988 Load: 57.3 t ADT: 230
HOLLYWOOD AVENUE
FairOver: HOLLYWOOD DITCH
0.47 MI. EAST OF US 171, Caddo, LA
Built 1951 Load: 57.7 t ADT: 8,250
I0020
FairOver: CANAL-M32
I0020, Madison, LA
Built 1975 Load: 57.7 t ADT: 31,481
US0090
FairOver: DRAINAGE DITCH
.95 Mi E of LA 3215, St. Mary, LA
Built 1979 Load: 57.7 t ADT: 7,885
Fitzmorris Rd
FairOver: METRCH PIPE @ TICE BRANC
3.35M S.OF LA 437 &LA1081, St. Tammany, LA
Built 1996 Load: 57.7 t ADT: 872
E. Bell Rd
FairOver: PEAKS CREEK
2.8M SW OF JCT 16 & 445, Tangipahoa, LA
Built 1992 Load: 58.0 t ADT: 201
LA1153
FairOver: CREEK
0.2 MI W OF US 165, Allen, LA
Built 1997 Load: 58.1 t ADT: 1,822
LA1180
FairOver: LEBLEU BAYOU
4.57 M W OF S JCT LA 107, Avoyelles, LA
Built 1985 Load: 58.1 t ADT: 691
LA1187
FairOver: CREEK
3.1 M. FROM W JCT. LA 114, Avoyelles, LA
Built 1987 Load: 58.1 t ADT: 331
LA1181
FairOver: STATE DRAINAGE CANAL
0.37 M. E OF W. JCT LA 11, Avoyelles, LA
Built 1987 Load: 58.1 t ADT: 1,716
LA0394
FairOver: PUMPKIN BRANCH CREEK
7.3 MI E of US 171, Beauregard, LA
Built 1998 Load: 58.1 t ADT: 490
LA0507
FairOver: BLACKLAKE BAYOU RELIEF
4.31 MI WEST OF LA 153, Bienville, LA
Built 2000 Load: 58.1 t ADT: 582
LA0101
FairOver: BAYOU
0.8 MI N. OF LA 14, Calcasieu, LA
Built 1996 Load: 58.1 t ADT: 3,166
LA1133
FairOver: CANAL
.74 MI EAST OF LA 108, Calcasieu, LA
Built 1994 Load: 58.1 t ADT: 4,636
LA0009
FairOver: CYPRESS CREEK
246 MI NORTH OF LA 2, Claiborne, LA
Built 1992 Load: 58.1 t ADT: 1,812
LA0102
FairOver: DRAIN
4.2 MI N of LA 97, Jefferson Davis, LA
Built 1995 Load: 58.1 t ADT: 3,728
LA0102
FairOver: DRAIN
0.04 MI S OF LA 1126, Jefferson Davis, LA
Built 1996 Load: 58.1 t ADT: 832
LA0545
FairOver: TURKEY CREEK
8.4 MI NORTH OF LA 146, Lincoln, LA
Built 1989 Load: 58.1 t ADT: 178
LA3265
FairOver: BAYOU CLEAR
2.4 MI. EAST OF US 165, Rapides, LA
Built 1989 Load: 58.1 t ADT: 4,368
LA0445
FairOver: SPRING CREEK
2.7 MI NW JCT LA 1062, Tangipahoa, LA
Built 1994 Load: 58.1 t ADT: 1,342
LA0062
FairOver: WEST FORK CREEK
0.15 MI NO. JCT LA 438, Washington, LA
Built 1996 Load: 58.1 t ADT: 571
LA0585
FairOver: BAYOU
0.1 MI N of LA 587, West Carroll, LA
Built 1986 Load: 58.1 t ADT: 584
LA0585
FairOver: CANAL
7.27 MI E of LA 586, West Carroll, LA
Built 1986 Load: 58.1 t ADT: 584
LA0835
FairOver: CREEK
9.58 MI E of US 165, Morehouse, LA
Built 1963 Load: 58.3 t ADT: 366
PEARL ST
FairOver: CREEK
0.003 MI E OF PICARD ROAD, Calcasieu, LA
Built 2017 Load: 58.6 t ADT: 150
N PERKINS FERRY RD
FairOver: LITTLE INDIAN BAYOU
3.6 MI N OF LA 378, Calcasieu, LA
Built 2021 Load: 58.6 t ADT: 3,580
LA0101
FairOver: GULLY
3.1 MI N OF LA 14, Jefferson Davis, LA
Built 1983 Load: 58.6 t ADT: 1,395
Henderson Brown Rd
FairOver: Watson Branch
3.5 Mi. E of LA 577, Ouachita, LA
Built 2006 Load: 58.6 t ADT: 41
LA0545
FairOver: CREEK
3.5 MI NORTH OF LA 146, Lincoln, LA
Built 1989 Load: 59.0 t ADT: 178
LA0139
FairOver: PATRICK BAYOU
1.86 MI NORTH OF US 80, Ouachita, LA
Built 1991 Load: 59.0 t ADT: 15,958
LA0040
FairOver: BRUSHY FORK BRANCH
LA 40 0.85 M E OF LA 1129, St. Tammany, LA
Built 1989 Load: 59.0 t ADT: 1,567
LA0966
FairOver: GRANT BAYOU EAST FORK
0.2 Mi E of US 61, West Feliciana, LA
Built 1991 Load: 59.0 t ADT: 857
MCGOLDRICK DRIVE
FairOver: LINCOLN MEMORIAL DITCH
0.17 MI SO OF LA 526, Caddo, LA
Built 1994 Load: 59.3 t ADT: 1,644
LA0001
FairOver: DRAIN
0.6 MI SOUTH OF LA 175, Caddo, LA
Built 1956 Load: 59.9 t ADT: 1,869
LA0545
FairOver: FIVE MILE CREEK
5.9 MI NORTH OF LA 146, Lincoln, LA
Built 1989 Load: 59.9 t ADT: 178
TARBUTTON RD
FairOver: BRANCH OF CYPRESS CREEK
0.7 MI SE of LA 544, Lincoln, LA
Built 2005 Load: 59.9 t ADT: 675
Rougeau Rd.
FairOver: Bayou Choupique
0.6 Mi S. of La 29, St. Landry, LA
Built 1987 Load: 59.9 t ADT: 85
Doyle Melancon Rd
FairOver: COULEE
2.3 Mi. S of LA 347, St. Martin, LA
Built 2003 Load: 60.3 t ADT: 4,376
OLD CAMP RD
FairOver: BOSSIER BAYOU
1.5 MI. EAST OF LA 191, Sabine, LA
Built 1994 Load: 60.6 t ADT: 110
Mt. Pisgah Rd
FairOver: SILVER CREEK RELIEF
1.6M SOUTH OF HWY 38, Washington, LA
Built 1989 Load: 60.6 t ADT: 675
I0110
FairOver: GOV'T. ST. ON RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 60.8 t ADT: 8,250
LA0448
FairOver: CREEK
1.0 M N OF LA 37, St. Helena, LA
Built 1962 Load: 60.9 t ADT: 547
LA0506
FairOver: BLACK BAYOU
1.90 Mi E OF LA 8, Caldwell, LA
Built 2015 Load: 61.2 t ADT: 300
S. Westport Dr.
FairOver: Drainage Canal
1.38 Mi. E. of LA 415, West Baton Rouge, LA
Built 1970 Load: 61.2 t ADT: 3,500
LA0028
FairOver: LITTLE SALINE B
14.5 MI SOUTH OF LA 84, LaSalle, LA
Built 1960 Load: 61.7 t ADT: 5,026
Hale Rd
FairOver: ALLIGATOR BAYOU
2 MI. W. OF LA 577, West Carroll, LA
Built 1996 Load: 62.2 t ADT: 120
I0020
FairOver: RED CHUTE BAYOU
3.3 MI EAST OF LA 782-2, Bossier, LA
Built 1973 Load: 62.6 t ADT: 62,470
I0210
FairOver: LAKE STREET
1.0 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1975 Load: 62.6 t ADT: 65,748
LA0589
FairOver: INDIAN LAKE
1.52 MI E of LA 582, West Carroll, LA
Built 1981 Load: 62.9 t ADT: 528
Showing 6,451-6,500 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 |