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
LA0002
FairOver: LITTLE CYPRESSBAY
.40 MI EAST OF LA 3, Bossier, LA
Built 1960 Load: 20.1 t ADT: 4,236
BRETWOOD DR
FairOver: BUCHANAN BAYOU TRIB
0.2M E OF CADDO PH RD 143, Caddo, LA
Built 1993 Load: 20.1 t ADT: 40
BRANCHWOOD DR
FairOver: BUCHANAN BAYOU TRIB
0.04M E OF CADDO RD 143, Caddo, LA
Built 1993 Load: 20.1 t ADT: 40
PERKINS RD 427
FairOver: DAWSON CREEK
1.69 M. NE OF LA 3064, East Baton Rouge, LA
Built 1986 Load: 20.1 t ADT: 33,600
Old Hammond Hwy
FairOver: LIVELY BAYOU
2.4 Miles E of US61, East Baton Rouge, LA
Built 1958 Load: 20.1 t ADT: 7,800
LA0423
FairOver: CYPRESS BAYOU
LA0423, East Baton Rouge, LA
Built 1957 Load: 20.1 t ADT: 6,448
Morgan Meadow Ave
FairOver: DRAINAGE BAYOU
0.8 MI S. OF CENTRAL, East Baton Rouge, LA
Built 1980 Load: 20.1 t ADT: 831
Devall Rd
FairOver: DRAINAGE CANAL
0.8 Mi N of LA 408, East Baton Rouge, LA
Built 1967 Load: 20.1 t ADT: 2,092
LA0037
FairOver: LILLYS CREEK
0.5 Mi. N. of LA 63, East Feliciana, LA
Built 1955 Load: 20.1 t ADT: 3,362
I0010
FairOver: UP Railroad
3.8 M W of LA 3000, Iberville, LA
Built 1972 Load: 20.1 t ADT: 58,734
I0010
FairOver: UP Railroad
I0010, Iberville, LA
Built 1972 Load: 20.1 t ADT: 298
BY GROSSE TETE XNG
FairOver: BAYOU GROSSE TETE
0.01 MI. W OF LA 411, Iberville, LA
Built 1967 Load: 20.1 t ADT: 960
US0167
FairOver: CREEK
20.88 MI N WINN PARISH LN, Jackson, LA
Built 1951 Load: 20.1 t ADT: 8,681
LA0505
FairOver: ANTWINE CREEK
.61 MI WEST OF US 167, Jackson, LA
Built 1975 Load: 20.1 t ADT: 873
Nero St
FairOver: BONNABEL CANAL
0.5 MI.E OF CAUSEWAY, Jefferson, LA
Built 1960 Load: 20.1 t
W. Bluebird Dr.
FairOver: COULEE
0.6 Miles NE of La 3073, Lafayette, LA
Built 1989 Load: 20.1 t ADT: 1,480
Idlewood Blvd.
FairOver: COULEE
0.25 Mi W of US 167, Lafayette, LA
Built 1971 Load: 20.1 t ADT: 720
Bajat Rd
FairOver: COULEE
0.1 Mi S of Ombrage Rd, Lafayette, LA
Built 1979 Load: 20.1 t ADT: 317
Arnaudville Rd.
FairOver: Bayou Carencro
1.2 MI N OF LA 1252, Lafayette, LA
Built 1977 Load: 20.1 t ADT: 700
US0165
FairOver: AT JONES
3.7 MI NORTH OF NORTH INT, Morehouse, LA
Built 1926 Load: 20.1 t ADT: 1,405
FDR 570
FairOver: SALINE BAYOU TRIB.
STRANGE ROAD, Natchitoches, LA
Built 1968 Load: 20.1 t ADT: 30
FDR 570
FairOver: CHOCTAW CREEK
STRANGE ROAD RT. 570, Natchitoches, LA
Built 1970 Load: 20.1 t ADT: 30
FDR570
FairOver: CHOCTAW CREEK
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1970 Load: 20.1 t ADT: 30
Morrison Rd
FairOver: DRAINAGE CANAL
0.75 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 20.1 t
Morrison Rd
FairOver: CANAL
0.3 MI.W.OF BULLARD, Orleans, LA
Built 1960 Load: 20.1 t
WASHINGTON ST
FairOver: YOUNGS BAYOU
WASHINGTON ST. MONRO, Ouachita, LA
Built 1961 Load: 20.1 t ADT: 2,000
LA0983
FairOver: BAYOU CHENAL
0.27 M W of LA 416, Pointe Coupee, LA
Built 1956 Load: 20.1 t ADT: 2,823
LA0107
FairOver: BRUSHY FORK RELIEF
1.17 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.1 t ADT: 3,354
LA0107
FairOver: BAYOU MARIA
3.58 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.1 t ADT: 3,354
LA0107
FairOver: BAYOU MARIA RELIEF
3.86 MI. NORTH OF LA 3128, Rapides, LA
Built 1953 Load: 20.1 t ADT: 3,354
US0080
FairOver: DRAIN
3.2 MI WEST OF SOUTH INT, Richland, LA
Built 1955 Load: 20.1 t ADT: 2,747
US0061
FairOver: BLIND RIVER
3.74 M W of LA 641, St. James, LA
Built 1977 Load: 20.1 t ADT: 14,957
Little Teche Rd.
FairOver: DRAINAGE CANAL
2.54 Mi S of LA 742, St. Landry, LA
Built 1979 Load: 20.1 t ADT: 240
LA3083
FairOver: C COTEAU HOLMES
1.07 MI WEST OF LA 679, St. Martin, LA
Built 1967 Load: 20.1 t ADT: 1,360
LA3083
FairOver: C COTEAU HOLMES
1.80 MI East OF LA 679, St. Martin, LA
Built 1967 Load: 20.1 t ADT: 1,360
N. Blvd.
FairOver: CANAL
1.0 MILE SOUTH OF I 12 OF, St. Tammany, LA
Built 1974 Load: 20.1 t ADT: 500
Edwin Neill way
FairOver: CREEK
1 MI SE OF RT 190 EX, Tangipahoa, LA
Built 1975 Load: 20.1 t ADT: 298
LA0058
FairOver: BAYOU TERREBONNE
1.58 MI EAST OF LA 56, Terrebonne, LA
Built 1964 Load: 20.1 t ADT: 5,194
BAYOUSIDE DR
FairOver: CANAL
0600 LOG MI FROM IN, Terrebonne, LA
Built 1974 Load: 20.1 t ADT: 557
BULL RUN RD
FairOver: COCKE CANAL
4.1 MI W OF LA 311, Terrebonne, LA
Built 1980 Load: 20.1 t ADT: 447
LA0082
FairOver: WEST RELIEF
12.23 Mi S of LA 3147, Vermilion, LA
Built 1958 Load: 20.1 t ADT: 2,899
Harvey Rd
FairOver: HAYS CREEK
2.05 MI. N OF HWG. 430, Washington, LA
Built 1981 Load: 20.1 t ADT: 688
Carrera Ln
FairOver: COULEE
0.01 MI NORTH OF LA 3123, Acadia, LA
Built 1976 Load: 20.4 t ADT: 240
LA0529
FairOver: BEAR BRANCH
3.73 MI NORTH OF LA 160, Bossier, LA
Built 1973 Load: 20.4 t ADT: 590
Seven Pines Rd
FairOver: Caney Creek
3.5 MI S OF HWY 160, Bossier, LA
Built 1977 Load: 20.4 t ADT: 250
Keatchie-Marshall
FairOver: KECHI MRSHS,TRBY BSHNK B
0.9 MI. EAST OF LA 169, Caddo, LA
Built 1985 Load: 20.4 t ADT: 40
KEATCHIE-MARSHALL
FairOver: TRIB.MILL CR.KECHI-MARSH
I.8 MI. WEST OF LA 169, Caddo, LA
Built 1984 Load: 20.4 t ADT: 60
Keithvil-Sprrdg Rd
FairOver: KHVL SPRDG RD,TRB.BUCHN.
2.4 M.W. OLD MANSFIE, Caddo, LA
Built 1975 Load: 20.4 t ADT: 140
Cook Rd
FairOver: BOGGY BAYOU TRIB
0.5M SOUTH OF CADDO RD 8, Caddo, LA
Built 1992 Load: 20.4 t ADT: 38
Blanchard Latex Rd
FairOver: CHOCTAW BAYOU
3.6 M EAST OF LA 169, Caddo, LA
Built 1989 Load: 20.4 t ADT: 78
Showing 1,951-2,000 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 |