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
LA0335
GoodOver: IL Melrose Canal
7 Mi East of La 3093, Vermilion, LA
Built 2019 Load: 46.3 t ADT: 284
LA0121
GoodOver: CREEK
3.75 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: FLOCTAW CREEK
3.7 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: CLEAR RUNNER BRANCH
4.1 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: CREEK
1.53 MI E OF LA 8, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,700
LA0121
GoodOver: CREEK
3.9 MI S OF LA 28, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,932
LA0121
GoodOver: BURTON CREEK
2.32 MI E OF LA 8, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,700
LA0121
GoodOver: CREEK
3.52 MI E OF LA 8, Vernon, LA
Built 2016 Load: 46.3 t ADT: 1,700
WELCOME CEM RD
GoodOver: MENACE CREEK
0.4 M E OF LA 465, Vernon, LA
Built 2018 Load: 46.3 t ADT: 150
Pleasant Hill Road
GoodOver: Little Silver Creek
1.18 Mi. N. of LA 1056, Washington, LA
Built 2019 Load: 46.3 t ADT: 310
LA0010
GoodOver: LAWRENCE CREEK
2.46 MILES EAST OF LA 16, Washington, LA
Built 2014 Load: 46.3 t ADT: 10,686
LA0002
GoodOver: INDIAN CREEK
5.03 MI NORTH OF LA 160, Webster, LA
Built 2015 Load: 46.3 t ADT: 1,492
LA0159
GoodOver: THORNY BRANCH
0.41 MI S OF LA 159, Webster, LA
Built 2016 Load: 46.3 t ADT: 1,492
SMITHVILLE RD
GoodOver: BRALY CREEK
1.6 MI. S. OF LA 157, Webster, LA
Built 2016 Load: 46.3 t ADT: 170
GUNTER LOOP
GoodOver: DRAIN
0.90 MI. N. OF LA 2, West Carroll, LA
Built 2019 Load: 46.3 t ADT: 75
Mitchner Rd
GoodOver: Little Creek
1.7 Mi. W. of LA 17, West Carroll, LA
Built 2019 Load: 46.3 t ADT: 300
Roundhill Rd
GoodOver: DRAIN TO COLEWA BAYOU
3.1 MILES EAST OF LA 585, West Carroll, LA
Built 2014 Load: 46.3 t ADT: 704
LA1236
GoodOver: LITTLE KIESCHE CREEK
1.33 MI W OF LA 34, Winn, LA
Built 2016 Load: 46.3 t ADT: 825
LA1236
GoodOver: KIESCHE CREEK
0.34 MI W OF LA 34, Winn, LA
Built 2016 Load: 46.3 t ADT: 825
LA1236
GoodOver: UNNAMED CREEK
2.85 MILES EAST OF US 167, Winn, LA
Built 2015 Load: 46.3 t ADT: 825
LA1236
GoodOver: BRUSHY CREEK
0.09 MILES EAST OF US 167, Winn, LA
Built 2014 Load: 46.3 t ADT: 825
LA0034
GoodOver: REDLAND CREEK
0.6 MI N OF LA 471, Winn, LA
Built 2016 Load: 46.3 t ADT: 1,219
LA0034
GoodOver: IATT CREEK
0.2 MI E OF LA 471, Winn, LA
Built 2016 Load: 46.3 t ADT: 965
Shed Rd
GoodOver: FLAT RIVER BAYOU
1.5 MILES NORTH OF US 80, Bossier, LA
Built 2001 Load: 46.7 t ADT: 9,854
Lemon Rd
GoodOver: REDWOOD CREEK
1.4 MI W OF LA 67, East Baton Rouge, LA
Built 2017 Load: 46.7 t ADT: 264
SARASOTA DR.
GoodOver: ENGRS. DEPOT CANAL
0.3 MI S OF LA 37, East Baton Rouge, LA
Built 2023 Load: 46.7 t ADT: 726
Blade Loop
GoodOver: RHINEHART CREEK
LOG MI 2.71 FR 339 TO 348, LaSalle, LA
Built 2002 Load: 46.7 t ADT: 350
Gallo Rd
GoodOver: 20 ARPENT CANAL
0.7 MI N OF LA 39, St. Bernard, LA
Built 2019 Load: 46.7 t ADT: 700
I0049
GoodOver: TRINITY BAYOU
0.22 M. N. OF LA 169, Caddo, LA
Built 2013 Load: 47.0 t ADT: 8,115
FARM ROAD
GoodOver: SABINE CANAL
0.9 MI E OF LA 397, Calcasieu, LA
Built 2022 Load: 47.0 t ADT: 38
BULL ISLAND RD
GoodOver: PARC PERDUE BAYOU
2.4 MI. E. OF LA 682, Iberia, LA
Built 2016 Load: 47.0 t ADT: 1,105
LA0064
GoodOver: AMITE RIVER
3.0 MILES WEST OF LA 16, Livingston, LA
Built 2012 Load: 47.0 t ADT: 19,524
Bootlegger RD
GoodOver: Branch
0.5 Mi. N. of LA 1085, St. Tammany, LA
Built 2020 Load: 47.0 t ADT: 10,000
Caroll St
GoodOver: Black Bayou
0.1 Mi. S. of LA 20, Terrebonne, LA
Built 2020 Load: 47.0 t ADT: 1,929
US0167
GoodOver: CORNEY BAYOU
2.25 MI. SOUTH OF LA 15, Union, LA
Built 2012 Load: 47.0 t ADT: 422
US 61
GoodOver: Thompson Cr
1.9 Mi. S. of LA 10, West Feliciana, LA
Built 2022 Load: 47.0 t ADT: 13,861
LA1153
GoodOver: CALCASIEU RIVER TRIB
1.0 MI N of US 165, Allen, LA
Built 2003 Load: 47.2 t ADT: 1,822
LA0581
GoodOver: TENSAS BAYOU
.99 MI EAST OF LA 134, East Carroll, LA
Built 2001 Load: 47.2 t ADT: 765
LA0010
GoodOver: ASYLUM BRANCH
0.06 Mi E of LA 952, East Feliciana, LA
Built 1988 Load: 47.2 t ADT: 6,113
LA0122
GoodOver: UNNAMED CREEK
7.99. M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 47.2 t ADT: 683
LA0122
GoodOver: BEAVER CREEK
3.38 M E OF E JCT LA 471, Grant, LA
Built 1999 Load: 47.2 t ADT: 683
LA0088
GoodOver: ROMERO CANAL
1.8 MI East OF La 89, Iberia, LA
Built 2004 Load: 47.2 t ADT: 4,573
I0010
GoodOver: TRANSCONTINENTAL DR.
3.0 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 47.2 t ADT: 137,542
LA0028
GoodOver: BAYOU MARIA
0.26 MI. EAST OF LA 3144, Rapides, LA
Built 1994 Load: 47.2 t ADT: 14,124
I0049
GoodOver: DRAINAGE CANAL
0.94 MI NORTH OF LA 181, Rapides, LA
Built 1985 Load: 47.2 t ADT: 20,572
I0049
GoodOver: DRAINAGE CANAL
0.94 MI NORTH OF LA 181, Rapides, LA
Built 1985 Load: 47.2 t ADT: 11,969
LA0103
GoodOver: BAYOU CARRON
1.45 MI EAST OF I-49, St. Landry, LA
Built 2004 Load: 47.2 t ADT: 2,097
LA0010
GoodOver: BOGUE CHITTO RELIEF
0.5 MI E LA 10 & LA 440, Washington, LA
Built 1997 Load: 47.2 t ADT: 12,018
OAK Str
GoodOver: GUM BAYOU
ON OAK STREET 0.25 EAST O, St. Tammany, LA
Built 2014 Load: 47.3 t ADT: 300
Holly Drive
GoodOver: Little Bogue Falaya
.15 miles north of LA 21, St. Tammany, LA
Built 2017 Load: 47.3 t ADT: 770
Showing 10,851-10,900 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 |