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
US0190
GoodOver: LIVELY BAYOU
US0190, East Baton Rouge, LA
Built 1958 Load: 22.7 t ADT: 19,515
LA0408
GoodOver: BAYOU
0.1 M E of I-110&LA 408, East Baton Rouge, LA
Built 1976 Load: 22.7 t ADT: 26,976
Stewart Ln
GoodOver: UNNAMED CREEK
1.7 MI SW LA67, LA422 JCT, East Feliciana, LA
Built 1999 Load: 22.7 t ADT: 14
LA1168
GoodOver: DRAIN
3.78 MI SOUTH OF LA 10, Evangeline, LA
Built 1962 Load: 22.7 t ADT: 409
Parish Line Rd.
GoodOver: TURKEY CREEK
.38 MILES WEST OF ELLA RO, Franklin, LA
Built 2015 Load: 22.7 t ADT: 10
LA0015
GoodOver: STOKES BAYOU
.7 MI NORTH OF LA 3210, Franklin, LA
Built 2007 Load: 22.7 t ADT: 4,592
Jim Albert Rd
GoodOver: CREEK
0.39 miles E of LA 17, Franklin, LA
Built 1993 Load: 22.7 t ADT: 80
LA0014
GoodOver: ARMANCO CANAL
.8 MI West of US 90, Iberia, LA
Built 1960 Load: 22.7 t ADT: 12,863
W. Napolean Ave
GoodOver: CANAL NUMBER 4
0.5 MI E OF DAVID DRIVE, Jefferson, LA
Built 1996 Load: 22.7 t
CARL HOPPE ROAD
GoodOver: ARCENEAUX BAYOU
0.7 MI. W. OF US 165, Jefferson Davis, LA
Built 1986 Load: 22.7 t ADT: 80
Madeline Ave.
GoodOver: MINE BRANCH COULEE
0.21 Mi W of LA 182, Lafayette, LA
Built 1978 Load: 22.7 t ADT: 720
LA0001
GoodOver: BAYOU LAFOURCHE
LA 1 OVER BAYOU LAFOURCHE, Lafourche, LA
Built 2009 Load: 22.7 t ADT: 3,305
AIRPORT RD
GoodOver: CANAL
1.18 MI E. JSC. LA308, Lafourche, LA
Built 1983 Load: 22.7 t ADT: 788
Gaskin Rd
GoodOver: Cripple Creek
1 Mi. NE of LA151, Lincoln, LA
Built 2021 Load: 22.7 t ADT: 50
LA0447
GoodOver: WILLIS BAYOU
0.2 M N OF LA 16, Livingston, LA
Built 1962 Load: 22.7 t ADT: 34,245
LA0447
GoodOver: DRAIN
2.0 M N OF LA 16, Livingston, LA
Built 1962 Load: 22.7 t ADT: 34,245
LA0447
GoodOver: WEST COLYELL CR
LA0447, Livingston, LA
Built 1962 Load: 22.7 t ADT: 34,245
HARP ST
GoodOver: BAYOU BONNE IDEE
0.4 MI W of US 165, Morehouse, LA
Built 2005 Load: 22.7 t ADT: 150
JOURDAN RD OFFRAMP
GoodOver: CITY STREET/RAILROAD
.15 MI S OF DOWNMAN ROAD, Orleans, LA
Built 1991 Load: 22.7 t
CROWELL RD
GoodOver: MILTON CREEK
2.0 MILES SOUTH OF LA 34, Ouachita, LA
Built 2016 Load: 22.7 t ADT: 33
BRIMBERRY RD
GoodOver: CREEK
1.0 MI W of LA 133, Richland, LA
Built 1998 Load: 22.7 t ADT: 60
US0061
GoodOver: DRAIN CANAL
6.27 M W of LA 641, St. James, LA
Built 1954 Load: 22.7 t ADT: 8,171
I0049
GoodOver: E.Grolee St/UPRR
4.40 Mi S of LA 744, St. Landry, LA
Built 1983 Load: 22.7 t ADT: 25,609
Market Rd
GoodOver: Bayou Tesson
1.0 Mi. N. of US 190, St. Landry, LA
Built 1965 Load: 22.7 t ADT: 1,000
LA0021
GoodOver: MARIAS CREEK
.45 MI N,JCT LA21 & LA16, St. Tammany, LA
Built 1987 Load: 22.7 t ADT: 7,160
RIVER ROAD
GoodOver: SKULL CREEK
0.09 MI N OF US 90, Tangipahoa, LA
Built 1963 Load: 22.7 t ADT: 2,400
LONGLEAF RD
GoodOver: BAYOU
1.9 Mi E of La 13, Vermilion, LA
Built 2013 Load: 22.7 t ADT: 243
LA0014
GoodOver: VINCENT CANAL
0.6 MI W. OF LA 13, Vermilion, LA
Built 1959 Load: 22.7 t ADT: 3,212
LA0014
GoodOver: COULEE BAYOU
2.1 MI E. OF LA 35, Vermilion, LA
Built 1959 Load: 22.7 t ADT: 7,329
BELSHA RD
GoodOver: DOWDEN CREEK
1.4 MILES NORTH OF LA 111, Vernon, LA
Built 2001 Load: 22.7 t ADT: 100
LA0025
GoodOver: W BOGUE FALAYA
LA0025, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: DANIEL BRANCH
LA0025, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: BONNER CREEK
LA0025, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: DRAIN
0.3 M S OF LA 16, Washington, LA
Built 1964 Load: 22.7 t ADT: 4,905
LA0025
GoodOver: BICKHAM BRANCH
LA0025, Washington, LA
Built 1963 Load: 22.7 t ADT: 2,272
LA0025
GoodOver: MILL CREEK
0.8 M S OF LA 438, Washington, LA
Built 1963 Load: 22.7 t ADT: 2,272
LA0620
GoodOver: CHAMBERLAIN CANAL
1.2 M W of LA 415, West Baton Rouge, LA
Built 1958 Load: 22.7 t ADT: 2,107
Poole Rd
GoodOver: Flat River
5.3 MILES EAST OF US 71, Bossier, LA
Built 2011 Load: 23.0 t ADT: 100
LA0001
GoodOver: CREEK
.1 MI NORTH OF LA 173, Caddo, LA
Built 1940 Load: 23.0 t ADT: 14,847
US0165
GoodOver: FISH CREEK
1.39 MI. SOUTH OF LA 123, Grant, LA
Built 2007 Load: 23.0 t ADT: 6,586
LA0004
GoodOver: CREEK
8.3 MI EAST OF LA 505, Jackson, LA
Built 2005 Load: 23.0 t ADT: 2,246
W Napolean
GoodOver: Canal 4
.1 mile east of David, Jefferson, LA
Built 1999 Load: 23.0 t ADT: 2,146
SHELTON CUTOFF RD
GoodOver: DRAIN TO CYPRESS CREEK
0.9 MI N INT 444, Morehouse, LA
Built 1988 Load: 23.0 t ADT: 170
LA0494
GoodOver: CANE RIVER
INT. LA 6B & LA 494, NATC, Natchitoches, LA
Built 2003 Load: 23.0 t ADT: 21,589
English Turn PKWY
GoodOver: DRAIN CANAL
1.0 MI. E. OF LA 406, Orleans, LA
Built 1987 Load: 23.0 t
TISDALE RD
GoodOver: HURRICANE CREEK
1.82 MI SW of LA 548, Ouachita, LA
Built 1994 Load: 23.0 t ADT: 372
US0071
GoodOver: UP RAILROAD
.3 MI. N OF INT I-49, Rapides, LA
Built 2003 Load: 23.0 t ADT: 14,994
Mill St
GoodOver: HYNSON BAYOU
MILL STREET, Rapides, LA
Built 1989 Load: 23.0 t ADT: 50
COOK RD
GoodOver: TURKEY CREEK
1.3 MI W of LA 17, Richland, LA
Built 1999 Load: 23.0 t ADT: 80
COLLINS DRIVE
GoodOver: TURKEY CREEK
1.7 MI W of LA 17, Richland, LA
Built 2007 Load: 23.0 t ADT: 350
Showing 7,001-7,050 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 |