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
US0090-B
GoodOver: GROUND
0.2 MI W OF LOYOLA AVE, Orleans, LA
Built 1960 Load: 45.4 t ADT: 7,620
I0010
GoodOver: CITRUS CANAL
3.1 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 45.4 t ADT: 55,800
I0010
GoodOver: CITRUS CANAL
3.1 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 45.4 t ADT: 1,600
MAGAZINE ROAD
GoodOver: BAYOU BARRIERE
BACK GATE, Plaquemines, LA
Built 1974 Load: 45.4 t ADT: 1,000
N 16th St
GoodOver: Bayou Rapides
0.4 Mi N of La 1, Rapides, LA
Built 2023 Load: 45.4 t ADT: 334
LA0008
GoodOver: CASTOR CREEK
5.1 MI. EAST OF LA 119, Rapides, LA
Built 1996 Load: 45.4 t ADT: 1,226
I0049
GoodOver: GROUND
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1992 Load: 45.4 t ADT: 15,642
I0049
GoodOver: RAILROAD AVE., UP RR
NORTH I-49 / US 71 INTG., Rapides, LA
Built 1995 Load: 45.4 t ADT: 15,642
Magistrate St
GoodOver: Corinne Canal
1 Mi N OF LA 39, St. Bernard, LA
Built 2022 Load: 45.4 t ADT: 100
LA0063
GoodOver: Pigeon Creek
1.9 Mi. N. of LA 16, St. Helena, LA
Built 2019 Load: 45.4 t ADT: 1,999
3rd Ave
GoodOver: Ponchitolawa Creek
0.6 Mi SE of Helenbirg Rd, St. Tammany, LA
Built 2023 Load: 45.4 t ADT: 200
I0055
GoodOver: SOUTH SLOUGH
8.9 MI N. OF PARISH LINE, Tangipahoa, LA
Built 2005 Load: 45.4 t ADT: 39,850
I0055
GoodOver: MIDDLE SLOUGH
9.8 MI N. OF PARISH LINE, Tangipahoa, LA
Built 2005 Load: 45.4 t ADT: 39,850
I0055
GoodOver: MIDDLE SLOUGH
9.8 MI N. OF PARISH LINE, Tangipahoa, LA
Built 2005 Load: 45.4 t ADT: 21,736
I0055
GoodOver: YELLOW WATER
I0055, Tangipahoa, LA
Built 1968 Load: 45.4 t ADT: 36,311
LA1054
GoodOver: DRAIN
0N LA 1054 3.3 MI N 440, Tangipahoa, LA
Built 1981 Load: 45.4 t ADT: 1,318
S. HOLLYWOOD RD
GoodOver: DRAIN CANAL
1.2 MI S OF LA 311, Terrebonne, LA
Built 2018 Load: 45.4 t ADT: 1,570
US0171
GoodOver: VERNON LAKE
2.09 MI. SOUTH OF LA 111, Vernon, LA
Built 1986 Load: 45.4 t ADT: 9,417
LA0021
GoodOver: COBURN CREEK
LA0021, Washington, LA
Built 1965 Load: 45.4 t ADT: 7,342
LA0113
GoodOver: JIM BURNEY BRANCH
0.3 MI N OF LA 1147, Beauregard, LA
Built 2022 Load: 45.7 t ADT: 1,806
Bob Wilson Rd
GoodOver: WALLACE BAYOU
0.81 M S OF LA 177, De Soto, LA
Built 1990 Load: 45.7 t ADT: 360
THE GROVE BLVD
GoodOver: DRAINAGE DITCH
0.77 M E OF LA 1248, East Baton Rouge, LA
Built 2019 Load: 45.7 t ADT: 1,901
Lemoine Cutoff Rd
GoodOver: CREEK
1.39 M. N. OF US 71, Grant, LA
Built 1993 Load: 45.7 t ADT: 320
Robley Dr.
GoodOver: ILE DES CANNES COULEE
1.4 Mi S of E Brousard Rd, Lafayette, LA
Built 2010 Load: 45.7 t ADT: 2,020
MOORE RD
GoodOver: YOUNGS BAYOU
0.50 MILES EAST OF LA 15, Ouachita, LA
Built 2015 Load: 45.7 t ADT: 700
CAPLES RD
GoodOver: CR
1.72 MI W of LA 3033, Ouachita, LA
Built 2009 Load: 45.7 t ADT: 2,272
LA0001
GoodOver: BAYOU JEAN DE JEAN
0.25 MI. NORTH OF LA 121, Rapides, LA
Built 2013 Load: 45.7 t ADT: 2,597
LA0112
GoodOver: BLOUNTS CREEK
4.7 MI. NORTH OF LA 113, Rapides, LA
Built 2013 Load: 45.7 t ADT: 1,197
LA0623
GoodOver: FLAGON BAYOU
0.6 M E OF US 165, Rapides, LA
Built 2019 Load: 45.7 t ADT: 1,951
FAIRWAY DRIVE
GoodOver: CANAL
0.82 MI. E. OF LA 3188, St. John the Baptist, LA
Built 2017 Load: 45.7 t ADT: 3,191
Country Club Dr
GoodOver: CANAL
1.6 MILES NORTH OF LA 61, St. John the Baptist, LA
Built 2011 Load: 45.7 t ADT: 100
Troy Lane
GoodOver: LITTLE TENSAS BAYOU
0.3 Miles N of Lee Road, Tensas, LA
Built 1984 Load: 45.7 t ADT: 46
Curtis Rd
GoodOver: Little Choctaw Bayou
0.05 M W of LA 3252, Tensas, LA
Built 1984 Load: 45.7 t ADT: 64
Trevillion Rd
GoodOver: DICKARD BAYOU
0.06 M E of LA 573, Tensas, LA
Built 1984 Load: 45.7 t ADT: 85
Little Choctaw RD
GoodOver: BIG CHOCTAW BAYOU
0.2 M S of LA 573, Tensas, LA
Built 1984 Load: 45.7 t ADT: 120
GIBSON E BRIDGE
GoodOver: LITTLE BAYOU BLACK
0.01 MI N OF LA 182, Terrebonne, LA
Built 1996 Load: 45.7 t ADT: 557
HAWKS RD
GoodOver: FLAT CREEK
1.76 M. W. OF JCT. US171, Vernon, LA
Built 1999 Load: 45.7 t ADT: 600
PARK RD
GoodOver: KINDER DITCH RELIEF
2.3 MI S OF LA 383, Allen, LA
Built 2018 Load: 46.0 t ADT: 377
PARK RD
GoodOver: KINDER DITCH
2.02 MI S OF LA 383, Allen, LA
Built 2018 Load: 46.0 t ADT: 377
LA0044
GoodOver: BLACK BAYOU
0.5 MI N OF LA 621, Ascension, LA
Built 2018 Load: 46.0 t ADT: 17,577
Daniel St.
GoodOver: SALINE BAYOU
0.3 MI. E. OF LA 151, Bienville, LA
Built 2017 Load: 46.0 t ADT: 1,200
LA0612
GoodOver: RED CHUTE BAYOU
3.27 MI. E. OF US 71, Bossier, LA
Built 2016 Load: 46.0 t ADT: 8,332
BLANCHARD FURRH RD
GoodOver: CHOCTAW BAYOU
0.5 MI. W.OF LA 173, Caddo, LA
Built 2018 Load: 46.0 t ADT: 160
5TH AVE
GoodOver: 5TH AVE DRAIN
0.2 MI N OF LA 3186, Calcasieu, LA
Built 2018 Load: 46.0 t ADT: 2,508
New Rafe Mayer Rd
GoodOver: DRAINAGE BAYOU
0.5 MI W OF LA.19, East Baton Rouge, LA
Built 2017 Load: 46.0 t ADT: 737
Rock Hill Road
GoodOver: Gray's Creek
5.72 MI N of Jct US 71, Grant, LA
Built 2017 Load: 46.0 t ADT: 130
Derric Rd
GoodOver: NORMAN CANAL
0.3 MILES WEST OF TENANT, Iberville, LA
Built 2016 Load: 46.0 t ADT: 250
Zoar Rd
GoodOver: Indian Cr
1.8 Mi. W. of LA 149, Jackson, LA
Built 2018 Load: 46.0 t ADT: 25
Vernon-Eros Rd
GoodOver: Colston Cr
4.7 Mi. W. of LA 146, Jackson, LA
Built 2019 Load: 46.0 t ADT: 50
23RD STREET
GoodOver: CANAL #17
.5 M. S. OF VETERANS BLVD, Jefferson, LA
Built 2017 Load: 46.0 t ADT: 350
Showing 10,701-10,750 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 |