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
FRAGALA ST
FairOver: LITTLE CREEK
0.4 MI W of US 425, Richland, LA
Built 1991 Load: 28.5 t ADT: 570
PATRICIA ST
FairOver: GUICHARD CANAL
.6 MI SE OF LA 39, St. Bernard, LA
Built 1974 Load: 28.5 t ADT: 5,918
PATRICIA ST
FairOver: GUERENGER CANAL
.6 MI NE OF LA. 39, St. Bernard, LA
Built 1974 Load: 28.5 t ADT: 2,600
FLAMINGO BLVD
FairOver: CREEK
0.02 SE of LA 70, St. Mary, LA
Built 1981 Load: 28.5 t ADT: 700
LA0024
FairOver: BAYOU TERREBONNE
0.4 MI. E OF INTRACOASTAL, Terrebonne, LA
Built 2006 Load: 28.5 t ADT: 30,800
ST LOUIS CANAL RD
FairOver: ST LOUIS CANAL
0.75 N OF LA 3040, Terrebonne, LA
Built 1976 Load: 28.5 t ADT: 6,487
Bains Rd
FairOver: LITTLE DRY BRANCH
1.2 MI E LA 66, US 61 JCT, West Feliciana, LA
Built 1996 Load: 28.5 t ADT: 80
US0190
FairOver: CLEAR CREEK
0.8 MI E OF LA389, Beauregard, LA
Built 1968 Load: 28.8 t ADT: 3,666
SIDNEY DEROUEN RD
FairOver: BELL CITY DRAINAGE CANAL
1.0 MI. E. OF HARRIS ROAD, Calcasieu, LA
Built 1999 Load: 28.8 t ADT: 295
JOHNSON ST
FairOver: SAN PATRICIO BAYOU
0.5 MI EAST OF LA 513, De Soto, LA
Built 1986 Load: 28.8 t ADT: 710
LA0562
FairOver: BRUSHEY BAYOU
2.80 M S of LA 875, Franklin, LA
Built 1981 Load: 28.8 t ADT: 2,036
NORTHSTAR LANE
FairOver: DRAIN TO CANEY LAKE
0.7 MI SW of LA 810, Jackson, LA
Built 1985 Load: 28.8 t ADT: 175
SEGNETTE BLVD
FairOver: MAIN CANAL
0.7 MI S. OF U.S. 90 BUS., Jefferson, LA
Built 1986 Load: 28.8 t
Bowie Rd
FairOver: COULEE
0065 LOG MI FROM INT, Lafourche, LA
Built 1972 Load: 28.8 t ADT: 4,080
US0165
FairOver: CREEK
1.90 M S of US 84, LaSalle, LA
Built 2009 Load: 28.8 t ADT: 3,518
FDR 337
FairOver: KISATCHIE BAYOU
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1970 Load: 28.8 t ADT: 30
Wall BLVD
FairOver: MAGELLEN CANAL
1.0 MILE NORTH OF LA 428, Orleans, LA
Built 1979 Load: 28.8 t
Wall BLVD
FairOver: MAGELLEN CANAL
1.0 MILE NORTH OF LA 428, Orleans, LA
Built 1979 Load: 28.8 t
Earhart to S Broad
FairOver: CITY STREET
2.0 MI S OF TULANE AVENUE, Orleans, LA
Built 1951 Load: 28.8 t
Jim Island Rd
FairOver: BAYOU PIERE
1.0 MI NW OF LA 174, Red River, LA
Built 1992 Load: 28.8 t ADT: 120
MADELINE ST
FairOver: LITTLE CREEK
LOGMI 0.24 FR 4 TO 5, Richland, LA
Built 1984 Load: 28.8 t ADT: 250
LA3125
FairOver: BAYOU DES ACADIENS
LA 3125 ST JAMES PAR, St. James, LA
Built 1980 Load: 28.8 t ADT: 10,807
LA0642
FairOver: MARVIN CANAL
0.6 M W of LA 3125, St. James, LA
Built 1979 Load: 28.8 t ADT: 410
Pine Ave.
FairOver: BAYOU TESSON
0.1 Mi East of LA 749, St. Landry, LA
Built 1965 Load: 28.8 t ADT: 450
TALLOW CREEK BLVD
FairOver: SOAP AND TALLOW BRANCH
.20 MI N OF OLD LA 1085, St. Tammany, LA
Built 2003 Load: 28.8 t ADT: 300
Spartan Dr
FairOver: CANAL
0.21 M EAST OF US 11, St. Tammany, LA
Built 1990 Load: 28.8 t ADT: 4,073
I0055
FairOver: BEAVER CREEK
I0055, Tangipahoa, LA
Built 1966 Load: 28.8 t ADT: 17,665
Shrimpers Rowe
FairOver: CANAL
1.0 M N OF FALGOUT CA RD, Terrebonne, LA
Built 1991 Load: 28.8 t ADT: 517
US0061
FairOver: ALEXANDER CREEK
0.2 M E OF LA 3057, West Feliciana, LA
Built 2011 Load: 28.8 t ADT: 16,169
LA0010
FairOver: BEAVER CREEK
1.8 MI. E OF INT LA372, Allen, LA
Built 1950 Load: 29.0 t ADT: 3,242
LA0941
FairOver: BAYOU CONWAY
1.4 M North of I-10, Ascension, LA
Built 1966 Load: 29.0 t ADT: 2,750
Desselle Crossing
FairOver: BAYOU DES GLAISES
0.1 MI. N OF LA 114, Avoyelles, LA
Built 1985 Load: 29.0 t ADT: 400
LA0389
FairOver: CREEK
16.3 MI NORTH LA 109, Beauregard, LA
Built 1967 Load: 29.0 t ADT: 442
LA0389
FairOver: BIVENS BRANCH
17.58 MI NORTH LA 109, Beauregard, LA
Built 1967 Load: 29.0 t ADT: 442
LA0154
FairOver: FOUR MILE BAYOU RELIEF
1.51 MI EAST OF LA 4, Bienville, LA
Built 1948 Load: 29.0 t ADT: 856
LA0154
FairOver: FOUR MILE BAYOU RELIEF
1.54 MI EAST OF LA 4, Bienville, LA
Built 1948 Load: 29.0 t ADT: 856
LA0154
FairOver: FOUR MILE BAYOU
1.74 MI EAST OF LA 4, Bienville, LA
Built 1948 Load: 29.0 t ADT: 856
LA0002
FairOver: BAYOU
.8 MI EAST OF LA 157E, Bossier, LA
Built 1950 Load: 29.0 t ADT: 1,824
LA0002
FairOver: CYPRESS BAYOU
2.6 MI EAST OF LA 157E, Bossier, LA
Built 1950 Load: 29.0 t ADT: 1,824
LA0002
FairOver: CANEY CREEK
4.8 MI EAST OF LA 157E, Bossier, LA
Built 1950 Load: 29.0 t ADT: 1,495
US0171
FairOver: MP RAILROAD, CREEK
1.0 MI. N. OF LA 3132, Caddo, LA
Built 1976 Load: 29.0 t ADT: 17,212
LA0384
FairOver: INTRACOASTAL WATERWAY
6.5 MI N of LA 1144, Calcasieu, LA
Built 1979 Load: 29.0 t ADT: 988
I0012
FairOver: SHERWOOD FOREST BLVD
1.2 Mi East of US 61, East Baton Rouge, LA
Built 1970 Load: 29.0 t ADT: 28,013
I0012
FairOver: SHERWOOD FOREST BLVD
3 Mi West of LA 3245, East Baton Rouge, LA
Built 1970 Load: 29.0 t ADT: 32,092
Ben Hur Rd
FairOver: DRAINAGE BAYOU
0.3 MI S OF LA 30, East Baton Rouge, LA
Built 1960 Load: 29.0 t ADT: 835
LA0068
FairOver: LITTLE SANDY CK
LA0068, East Feliciana, LA
Built 1964 Load: 29.0 t ADT: 2,285
LA0106
FairOver: BAYOU NEZPIQUE
2.11 MI EAST OF LA 13, Evangeline, LA
Built 1964 Load: 29.0 t ADT: 1,294
LA0095
FairOver: BAYOU MARROW
6.69 MI EAST OF LA 104, Evangeline, LA
Built 1965 Load: 29.0 t ADT: 1,107
LA0004
FairOver: WEST TURKEY CREEK
2.7 MI NORTH OF LA 128, Franklin, LA
Built 1952 Load: 29.0 t ADT: 1,701
US0090/Frontage
FairOver: Delahoussaye Canal
0.05 W of LA668, Iberia, LA
Built 1971 Load: 29.0 t ADT: 1,432
Showing 3,301-3,350 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 |