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
LA0471
GoodOver: Dartigo Creek
5.88 M N of US 71, Grant, LA
Built 2021 Load: 46.3 t ADT: 510
LA0471
GoodOver: Creek
6.02 M N of US 71, Grant, LA
Built 2021 Load: 46.3 t ADT: 510
US0165
GoodOver: OLD SLOUGH
0.63 MILES NORTH OF LA 8, Grant, LA
Built 2006 Load: 46.3 t ADT: 6,586
Pellerin Rd
GoodOver: Delahoussaye Canal
0.1 M NW of LA 668, Iberia, LA
Built 2018 Load: 46.3 t ADT: 1,150
Poplar St
GoodOver: BONNABEL CANAL
0.5 MI E OF CAUSEWAY BLVD, Jefferson, LA
Built 2015 Load: 46.3 t
LA0045
GoodOver: DRAIN CANAL
5.1 MI S OF LA 302, Jefferson, LA
Built 2018 Load: 46.3 t ADT: 6,709
US0165
GoodOver: BAYOU
1.4 MI N OF LA 102, Jefferson Davis, LA
Built 2017 Load: 46.3 t ADT: 11,886
US0165
GoodOver: BAYOU SERPENT RELIEF
1.9 MI N OF LA 102, Jefferson Davis, LA
Built 2017 Load: 46.3 t ADT: 11,886
US0090
GoodOver: BAYOU
3.3 MI E OF LA 395, Jefferson Davis, LA
Built 2022 Load: 46.3 t ADT: 4,262
Canaan Rd
GoodOver: ANSELM COULEE
0.4 Mi E Kaliste Saloom, Lafayette, LA
Built 2010 Load: 46.3 t ADT: 172
Trappey Rd.
GoodOver: Drain
0.2 Mi. N of Kidder Road, Lafayette, LA
Built 1999 Load: 46.3 t ADT: 1,110
Jeremy Rd
GoodOver: FUNNY LOUIS BAYOU
0.8 MILES WEST OF LA.503, LaSalle, LA
Built 2015 Load: 46.3 t ADT: 225
Sulphur Springs Rd
GoodOver: HORSEPEN Cr
0.9 MI N OF LA.127, LaSalle, LA
Built 2016 Load: 46.3 t ADT: 348
LA0146
GoodOver: Cypress Creek
2.1 Mi. E. of LA 822, Lincoln, LA
Built 2020 Load: 46.3 t ADT: 2,775
PEA RIDGE RD
GoodOver: TURKEY CREEK
.75 MI SOUTH OF LA 442, Livingston, LA
Built 2018 Load: 46.3 t ADT: 705
LA 835
GoodOver: Creek
4.41 Mi. East of US 165, Morehouse, LA
Built 2023 Load: 46.3 t ADT: 575
Bud Rd
GoodOver: Bonne Idee Bayou
01.70 Mi. SE of la 599, Morehouse, LA
Built 2019 Load: 46.3 t ADT: 75
Mott Lane
GoodOver: Drain to Irwin Lake
2.2 mi. W. of LA 133, Morehouse, LA
Built 2018 Load: 46.3 t ADT: 75
LA 835
GoodOver: Creek
4.74 Mi. East of US 165, Morehouse, LA
Built 2023 Load: 46.3 t ADT: 575
US0090-B
GoodOver: GROUND
0.5 MI. S. OF I-10, Orleans, LA
Built 2016 Load: 46.3 t ADT: 7,620
I0010
GoodOver: CITRUS CANAL RD.
3.1 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 46.3 t ADT: 4,380
I0010
GoodOver: CITRUS CANAL RD.
3.1 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 46.3 t ADT: 1,503
LA0496
GoodOver: BAYOU RAPIDES
1.95 MI. EAST OF LA 121, Rapides, LA
Built 2002 Load: 46.3 t ADT: 2,207
LA0155
GoodOver: BLACK LAKE BAYOU RELIEF
11.4 MI E. OF US 71, Red River, LA
Built 2015 Load: 46.3 t ADT: 618
HILL ROAD
GoodOver: LITTLE FORK
1.6 MI. WEST OF US 425, Richland, LA
Built 2018 Load: 46.3 t ADT: 33
MONROE RD
GoodOver: LITTLE CREEK
0.7 MI N of LA 854, Richland, LA
Built 2009 Load: 46.3 t ADT: 175
US0171
GoodOver: CHOCTAW CREEK
1.1 MI. NORTH OF LA 174, Sabine, LA
Built 2006 Load: 46.3 t ADT: 5,228
US0171
GoodOver: BEAR CREEK
3.96 MI. NORTH OF LA 174, Sabine, LA
Built 2006 Load: 46.3 t ADT: 4,790
BARTOLO ST
GoodOver: 20 ARPENT CANAL
0.2 MI N OF LA 39, St. Bernard, LA
Built 2018 Load: 46.3 t ADT: 250
I0310
GoodOver: RAMP 'E'
5.53 MI S JCT I-10, St. Charles, LA
Built 1980 Load: 46.3 t ADT: 15,642
LA1042
GoodOver: Twelve Mile Creek
2.5 Mi W of La 37, St. Helena, LA
Built 2020 Load: 46.3 t ADT: 1,316
LA0104
GoodOver: BAYOU PLAQUEMINE BRULE
1.4 MI W. OF US 190, St. Landry, LA
Built 2013 Load: 46.3 t ADT: 2,158
LA0091
GoodOver: Drainage Canal
0.01 MI0. E0. of LA 757, St. Landry, LA
Built 2018 Load: 46.3 t ADT: 1,617
HAPPY TOWN ROAD
GoodOver: LITTLE ALABAMA BAYOU
SEC 111 T7S R8E, St. Martin, LA
Built 2001 Load: 46.3 t ADT: 30
US0090
GoodOver: TEXAS GAS PIPELINE
6.4 Mi E of LA 182, St. Mary, LA
Built 1994 Load: 46.3 t ADT: 7,885
US0090
GoodOver: TEXAS GAS PIPELINE
2.27 Mi W of LA 662, St. Mary, LA
Built 1994 Load: 46.3 t ADT: 10,035
LA0440
GoodOver: CREEK
0.1 MILE WEST OF LA 1061, Tangipahoa, LA
Built 2013 Load: 46.3 t ADT: 752
LA1054
GoodOver: BIG CREEK
2.76 MI N OF LA 10, Tangipahoa, LA
Built 2018 Load: 46.3 t ADT: 1,159
North River Rd
GoodOver: Ashley Branch
1.4 mi. south of la 38, Tangipahoa, LA
Built 2018 Load: 46.3 t ADT: 218
I0055
GoodOver: SOUTH SLOUGH
8.9 MI N. OF PARISH LINE, Tangipahoa, LA
Built 2005 Load: 46.3 t ADT: 17,665
LA0004
GoodOver: MOUND BAYOU
0.8 MI NORTH OF LA 128, Tensas, LA
Built 1967 Load: 46.3 t ADT: 618
LA0024
GoodOver: BAYOU TERREBONNE
02550650400321, Terrebonne, LA
Built 1978 Load: 46.3 t ADT: 3,919
LA0082
GoodOver: LITTLE BAYOU
1.3 Mi. South of LA 690, Vermilion, LA
Built 2018 Load: 46.3 t ADT: 2,899
LA0035
GoodOver: COULEE DEJON
2.75 MI. S. OF LA14, Vermilion, LA
Built 2014 Load: 46.3 t ADT: 3,591
LA0035
GoodOver: SLEDGE CANAL
0.6 MI S. OF LA 14, Vermilion, LA
Built 2014 Load: 46.3 t ADT: 3,591
LA0035
GoodOver: CREEK
0.4 Miles West of LA 692, Vermilion, LA
Built 2014 Load: 46.3 t ADT: 1,965
LA0082
GoodOver: DRAIN
0.3 MI. N. OF LA 333, Vermilion, LA
Built 2018 Load: 46.3 t ADT: 2,899
LA0332
GoodOver: Gueydan Canal
1.76 MI W. OF LA 91, Vermilion, LA
Built 2015 Load: 46.3 t ADT: 288
LA0089
GoodOver: CREEK
1.2 MI N. OF LA 682, Vermilion, LA
Built 2015 Load: 46.3 t ADT: 4,714
LA0335
GoodOver: CREEK
2 MI W OF LA 35, Vermilion, LA
Built 2018 Load: 46.3 t ADT: 284
Showing 10,801-10,850 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 |