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
LA0006
FairOver: CRIB CREEK
4.46 M E OF E JCT LA 3118, Sabine, LA
Built 1966 Load: 45.4 t ADT: 5,031
I0010
FairOver: HOPE CANAL
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 44,074
I0010
FairOver: HOPE CANAL
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 27,551
I0010
FairOver: MISSISSIPPI BAYOU
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 44,074
I0010
FairOver: MISSISSIPPI BAYOU
I0010, St. John the Baptist, LA
Built 1975 Load: 45.4 t ADT: 27,551
US0190
FairOver: BAYOU DOZA
1.0 MI WEST OF LA 95, St. Landry, LA
Built 2001 Load: 45.4 t ADT: 4,700
LA0029
FairOver: BAYOU BOUEF (WHITEVILLE)
1.55 MI N OF LA 182, St. Landry, LA
Built 1998 Load: 45.4 t ADT: 999
LA0029
FairOver: BAYOU BOEUF
4.47 MI WEST OF LA 182, St. Landry, LA
Built 1998 Load: 45.4 t ADT: 999
US0090
FairOver: RAMP F
1.40 MI E of Berwick Exit, St. Mary, LA
Built 1977 Load: 45.4 t ADT: 3,938
Town Center Pkwy.
FairOver: SCHNEIDER CANAL
ON TOWN CENTER PKWY 0.80, St. Tammany, LA
Built 2015 Load: 45.4 t ADT: 1,000
I0055
FairOver: YELLOW WATER RIVER
I0055, Tangipahoa, LA
Built 1968 Load: 45.4 t ADT: 21,736
LA0113
FairOver: NORTH FORK DRY CREEK
0.5 MI S of LA 394, Beauregard, LA
Built 2005 Load: 45.7 t ADT: 1,806
SILVER CROSS RD
FairOver: WALNUT BAYOU
0.08 MI SW of US 80, Madison, LA
Built 2007 Load: 45.7 t ADT: 60
WASHINGTON ST
FairOver: YOUNGS BAYOU
WASHINGTON ST. MONRO, Ouachita, LA
Built 1972 Load: 45.7 t ADT: 2,000
US0080
FairOver: LAFOURCHE BAYOU
3.6 MI W OF LA 133, Richland, LA
Built 2017 Load: 45.7 t ADT: 2,747
OCHSNER BOULEVARD
FairOver: TIMBER BRANCH
1.5 MI.NORTHWEST OF LA.21, St. Tammany, LA
Built 2010 Load: 45.7 t ADT: 6,295
Wade Rd
FairOver: BAYOU BIG COLENA
2MI. NTH. HWY. 134, West Carroll, LA
Built 1983 Load: 45.7 t ADT: 328
LA0537
FairOver: STILLHOUSE BAYOU
2.7 MI NORTH OF LA 2, Bossier, LA
Built 2011 Load: 46.0 t ADT: 21
MANUEL ROAD
FairOver: SERPENT BAYOU
1.6 MI N of LA 102, Jefferson Davis, LA
Built 2017 Load: 46.0 t ADT: 150
LA1088
FairOver: CANE BAYOU
1.7 M E OF I-12, St. Tammany, LA
Built 1974 Load: 46.0 t ADT: 9,722
US0165-B
FairOver: BAYOU BLUE TRIBUTARY
0.7 MI SOUTH OF LA 26, Allen, LA
Built 2002 Load: 46.3 t ADT: 8,809
LA0070-S
FairOver: BAYOU LAFOURCHE
0.04 M N of LA 1&LA 70-S, Assumption, LA
Built 1977 Load: 46.3 t ADT: 8,101
US0171
FairOver: SOUTH BRUSH BAYOU
1.2 MI. N. OF LA 3132, Caddo, LA
Built 1976 Load: 46.3 t ADT: 17,212
MARCANTEL RD
FairOver: BUXTON CREEK
0.2 MI N of ARTHUR MARCAN, Calcasieu, LA
Built 2019 Load: 46.3 t ADT: 216
RIVER RD
FairOver: CREEK
5.12 MI E OF LA 3059, Calcasieu, LA
Built 2018 Load: 46.3 t ADT: 246
LA0124
FairOver: BUSHLEY BAYOU
1.6 MI SOUTH OF LA 8, Catahoula, LA
Built 1998 Load: 46.3 t ADT: 2,659
LA0067
FairOver: COMITE RIVER
1.8 Mi N of LA 412, East Feliciana, LA
Built 1965 Load: 46.3 t ADT: 5,772
US0165
FairOver: BIG CREEK
0.76 MILES NORTH OF LA 8, Grant, LA
Built 2006 Load: 46.3 t ADT: 6,586
BEAR KNOLL RD
FairOver: DUGDEMONA RIVER
2.7 MI. NNE INT. 300, Jackson, LA
Built 1983 Load: 46.3 t ADT: 410
I0020
FairOver: CYPRESS BAYOU BRIDGE
.7 MI EAST OF EAST INT OF, Madison, LA
Built 1975 Load: 46.3 t ADT: 28,276
LA0428
FairOver: DONNER CANAL
3.18 MI EAST OF JEFF. PAR, Orleans, LA
Built 1975 Load: 46.3 t ADT: 7,178
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 77,962
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 1,600
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 4,380
I0010
FairOver: JAHNCKE CANAL
4.8 MI EAST OF US 90, Orleans, LA
Built 1972 Load: 46.3 t ADT: 4,707
LA0034
FairOver: BAYOU BLACK
6.39 MI EAST OF LA 546, Ouachita, LA
Built 1953 Load: 46.3 t ADT: 17,751
LA3017
FairOver: DRAIN CANAL
1.6 MI WEST OF LA 23, Plaquemines, LA
Built 1997 Load: 46.3 t ADT: 22,518
I0049
FairOver: BAYOU CALLAHAN
0.9 MILES N OF LA 3233, St. Landry, LA
Built 1982 Load: 46.3 t ADT: 4,002
LA0440
FairOver: CREEK
2.0 MILES WEST OF LA 1061, Tangipahoa, LA
Built 2014 Load: 46.3 t ADT: 752
LA0033
FairOver: CECIL CREEK
5.3 MI N of LA 143, Union, LA
Built 1996 Load: 46.3 t ADT: 1,200
LA0392
FairOver: BAYOU TORO
2.8 MI WEST OF LA 111, Vernon, LA
Built 1965 Load: 46.3 t ADT: 688
LA0002
FairOver: BOEUF RIVER
2.1 MI WEST OF LA 585, West Carroll, LA
Built 1978 Load: 46.3 t ADT: 2,159
Airline Dr
FairOver: Flat River
5.0 MI NORTH OF LA 3105, Bossier, LA
Built 1985 Load: 46.7 t ADT: 10,000
West Bradford St
FairOver: WEST HEMPHILL CREEK
0.2 MILES WEST OF LA 8, LaSalle, LA
Built 1985 Load: 46.7 t ADT: 370
Turkey Cr Cut-off
FairOver: COCODRIE BAYOU
7.47 MILES SE OF US 165, Rapides, LA
Built 1984 Load: 46.7 t ADT: 250
Robinson Bridge Rd
FairOver: BAYOU BOEUF
0.02 MILE SOUTH OF LA 490, Rapides, LA
Built 1984 Load: 46.7 t ADT: 310
ADCOCK RD
FairOver: BOEUF RIVER
LOG MI 0.04 FR 485 TO 557, Richland, LA
Built 1985 Load: 46.7 t ADT: 208
Fountain Young Rd
FairOver: CURTIS CREEK
0.5 MI W. OF LA 1041, St. Helena, LA
Built 1985 Load: 46.7 t ADT: 230
LA0027
FairOver: FIRST BAYOU
2.1 MI N of LA 82, Cameron, LA
Built 1999 Load: 47.2 t ADT: 1,226
LA0027
FairOver: SECOND BAYOU
3.5 MI N of LA 82, Cameron, LA
Built 1999 Load: 47.2 t ADT: 1,226
Showing 6,251-6,300 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 |