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
LA0095
FairOver: BAYOU WYKOFF
0.7 MI W OF LA 356, Acadia, LA
Built 1963 Load: 18.8 t ADT: 5,275
LA0429
FairOver: SMITH BAYOU
1.6 M W of LA 44, Ascension, LA
Built 1969 Load: 18.8 t ADT: 9,071
Roddy Rd
FairOver: BAYOU NARCISSE
.7 MI.NE-LA 3030,US61 JCT, Ascension, LA
Built 1994 Load: 18.8 t ADT: 500
Ott Ln
FairOver: BAYOU BLACK
.08 MI S INTER CANNON RD, Ascension, LA
Built 1977 Load: 18.8 t ADT: 20
LA3099
FairOver: PALMETTO CREEK
0.5 MI. SW OF INT US190, Beauregard, LA
Built 1973 Load: 18.8 t ADT: 2,614
LA0003
FairOver: DRAIN
3.11 MI NORTH OF LA 2, Bossier, LA
Built 1935 Load: 18.8 t ADT: 2,238
LA0164
FairOver: CANEY BRANCH
.78 MI EAST OF LA 614, Bossier, LA
Built 1943 Load: 18.8 t ADT: 3,472
Ellerbe Rd
FairOver: PRAIRIE RIVER
1 MI N.W. OF CASPIAN, Caddo, LA
Built 1962 Load: 18.8 t ADT: 61
Barron Rd
FairOver: BARRON RD, TY TO BOGGY B
1.7 MI EAST OF US 171, Caddo, LA
Built 1992 Load: 18.8 t ADT: 4,787
QUAIL RD
FairOver: GILMER BAYOU
1.3 MI SOUTH OF LA 511, Caddo, LA
Built 1982 Load: 18.8 t ADT: 521
BERKSHIRE PLACE
FairOver: PIERREMONT DITCH
0.1 MI. EAST OF GILBERT, Caddo, LA
Built 1982 Load: 18.8 t ADT: 250
HOLLYWOOD AVENUE
FairOver: COURTESY LANE DITCH
1.9 MI. WEST OF U.S., Caddo, LA
Built 1965 Load: 18.8 t ADT: 10,084
SOUTHERN AVE
FairOver: KINGS HIGHWAY
2.8M NORTH OF LA 511, Caddo, LA
Built 1992 Load: 18.8 t ADT: 8,132
CATHERINE ST
FairOver: TRIBUTARY TO CROSS LAKE
0.8 MI W OF LA171, Caddo, LA
Built 1955 Load: 18.8 t ADT: 200
North Lakeshore Dr
FairOver: TRIBUTARY TO CROSS LAKE
2.1 MI.SO. OF CADDO RD 4, Caddo, LA
Built 1982 Load: 18.8 t ADT: 38
Crawford Rd
FairOver: TIGER BRANCH
0.7 MI E OF LA 538, Caddo, LA
Built 1980 Load: 18.8 t ADT: 78
E. LINCOLN RD
FairOver: CREEK
1.0 MI WEST OF LA 397, Calcasieu, LA
Built 1986 Load: 18.8 t ADT: 426
LAKESHORE DR
FairOver: DRAINAGE CANAL
0.05 MI S of LA 385, Calcasieu, LA
Built 1937 Load: 18.8 t ADT: 8,548
ANTHONY FERRY RD
FairOver: HOUSTON RIVER
0.4 MI NORTH OF LA 379, Calcasieu, LA
Built 1968 Load: 18.8 t ADT: 1,154
LA0004
FairOver: BILL'S CREEK
4.57 M W of LA 846, Caldwell, LA
Built 1971 Load: 18.8 t ADT: 311
Jefferson Hwy.
FairOver: CLAYCUT BAYOU
2.7 Mi N of LA 948, East Baton Rouge, LA
Built 1963 Load: 18.8 t ADT: 23,400
Old Hammond Hwy
FairOver: JONES CREEK
2.2 Miles E of US 61, East Baton Rouge, LA
Built 1958 Load: 18.8 t ADT: 7,800
Baringer Rd
FairOver: DRAINAGE BAYOU
1.6 MI NE. JCT I-10, East Baton Rouge, LA
Built 1965 Load: 18.8 t ADT: 5,290
LA0955
FairOver: BLACK CREEK
2.9 M E of LA 19, East Feliciana, LA
Built 1962 Load: 18.8 t ADT: 1,200
LA0004
FairOver: PINE CREEK
.2 MI NORTH OF LA 128, Franklin, LA
Built 1952 Load: 18.8 t ADT: 2,151
Old 165 Rd
FairOver: CYPRESS CREEK
2.65 M. N. OF JCT. LA 123, Grant, LA
Built 1935 Load: 18.8 t ADT: 61
LA0069
FairOver: MUDDY BAYOU
2.2 Mi N of LA 996, Iberville, LA
Built 1962 Load: 18.8 t ADT: 3,301
HARVEY BLVD
FairOver: TRAPP CANAL
0.45 MI. E. OF MANHATTAN, Jefferson, LA
Built 1984 Load: 18.8 t ADT: 6,000
THIRD ST.
FairOver: DRAINAGE DITCH
0.3 MI W of LA 14, Jefferson Davis, LA
Built 1968 Load: 18.8 t ADT: 325
ABELL ROAD
FairOver: WEST LACASSINE BAYOU
0.9 MI E of LA101, Jefferson Davis, LA
Built 1970 Load: 18.8 t ADT: 50
DEWOLF RD.
FairOver: ARCENEAUX BAYOU
2.0 MI E of LA 383, Jefferson Davis, LA
Built 1980 Load: 18.8 t ADT: 300
LA0089
FairOver: ROMERO CANAL
0.46 MI WEST OF LA 88, Lafayette, LA
Built 1959 Load: 18.8 t ADT: 1,840
LA0339
FairOver: ANSLEM COULEE
0.04 MI N of LA 92, Lafayette, LA
Built 1957 Load: 18.8 t ADT: 7,704
Denais Rd.
FairOver: COULEE
.01 Miles N Leblanc Rd, Lafayette, LA
Built 1978 Load: 18.8 t ADT: 210
Elias G. Rd.
FairOver: ILE DES CANNES COULEE
0.8 Mi W. of US 167, Lafayette, LA
Built 1972 Load: 18.8 t ADT: 180
Beau Bassin
FairOver: VERMILION RIVER
1.34 Mi NW of LA 98, Lafayette, LA
Built 1970 Load: 18.8 t ADT: 660
E. Armand St.
FairOver: COULEE
0.06 Mi NE of LA 182, Lafayette, LA
Built 1949 Load: 18.8 t ADT: 200
S CAROLLTON AVE
FairOver: WASHINGTON.AVE.CANAL
.2 MI N.OF AIRLINE H, Orleans, LA
Built 1954 Load: 18.8 t
US0080
FairOver: OUACHITA RIVER-LOUISVILL
1.6 MI WEST OF LA 840-6, Ouachita, LA
Built 1936 Load: 18.8 t ADT: 17,683
LOUBERTA ST
FairOver: YOUNGS BAYOU
LOUBERTA STREET, Ouachita, LA
Built 1993 Load: 18.8 t ADT: 300
LA0417
FairOver: JOHNSON CANAL
LA0417, Pointe Coupee, LA
Built 1963 Load: 18.8 t ADT: 503
Levee Road
FairOver: Drainage Channel
7 MI. W. OF MORGANZA, LA, Pointe Coupee, LA
Built 1940 Load: 18.8 t ADT: 38
FDR 273
FairOver: ROCKY BRANCH
NATIONAL FOREST, Rapides, LA
Built 1970 Load: 18.8 t ADT: 60
Sugartown Rd
FairOver: CALCASIEU RIVER TRIB.
0.06 MILE EAST OF STROTHE, Rapides, LA
Built 1982 Load: 18.8 t ADT: 60
I0049
FairOver: BAYOU CARENCRO
1.0 MI NORTH OF LA 182, St. Landry, LA
Built 1963 Load: 18.8 t ADT: 44,889
Botany Bay Rd
FairOver: Bayou Portage
1.1 Mi E of Seven Arpent, St. Landry, LA
Built 1975 Load: 18.8 t ADT: 150
Park Ave.
FairOver: Bayou Tesson
0.9 Mi. E. of La 357, St. Landry, LA
Built 1936 Load: 18.8 t ADT: 1,500
WPA Rd
FairOver: BAYOU WAUKSHA
2.8 Mi SW. of US 71, St. Landry, LA
Built 1978 Load: 18.8 t ADT: 750
Johnson Rd
FairOver: DUMOLIN CANAL
0.8 Mi. N. of LA 678, St. Martin, LA
Built 1970 Load: 18.8 t ADT: 226
Johnson Rd
FairOver: DUMOLIN CANAL
1.2 Mi. N. of LA 678, St. Martin, LA
Built 1970 Load: 18.8 t ADT: 226
Showing 1,651-1,700 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 |