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
Elliot Rd
PoorOver: CLAY CUT BAYOU
3 MI NE LA 42,I-10 I, East Baton Rouge, LA
Built 1970 Load: 20.1 t ADT: 6,230
Mchugh Rd
PoorOver: BRUSHY BAYOU
0.4 MI S OF BAKER BLVD, East Baton Rouge, LA
Built 1975 Load: 20.1 t ADT: 2,520
LA0002
PoorOver: BAYOU MACON
6.99 MI WEST OF US 65, East Carroll, LA
Built 1959 Load: 20.1 t ADT: 1,232
US0167
PoorOver: BEAR CREEK
8.13 MI. NORTH OF LA 472, Grant, LA
Built 1975 Load: 20.1 t ADT: 11,712
LA0077
PoorOver: INTERCOASTAL WATERWAY
LA0077, Iberville, LA
Built 1961 Load: 20.1 t ADT: 4,376
Sidney Rd
PoorOver: Port Allen Lock
0.01 Mi. N. of LA77, Iberville, LA
Built 1966 Load: 20.1 t ADT: 400
CADDY DR
PoorOver: AMES CANAL NO.1
0.5MI.SOUTH OF LAPAL, Jefferson, LA
Built 1970 Load: 20.1 t ADT: 200
SAUVAGE AVE
PoorOver: AMES CANAL NO.1
0.5MI.SOUTH OF LAPAL, Jefferson, LA
Built 1970 Load: 20.1 t
Failla Rd
PoorOver: COULEE
0.50 Mi E of Verot Sch Rd, Lafayette, LA
Built 1978 Load: 20.1 t ADT: 3,040
Waters Rd
PoorOver: BAYOU CARENCRO
0.1 M WEST OF GENDARME RD, Lafayette, LA
Built 1990 Load: 20.1 t ADT: 500
FDR 525
PoorOver: ANTOINE CREEK
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1965 Load: 20.1 t ADT: 50
LA0006
PoorOver: RED RIVER @ GRAND ECORE
2.3 MI. N OF JCT 3175, Natchitoches, LA
Built 1959 Load: 20.1 t ADT: 15,363
JOURDAN RD
PoorOver: CITY STREET/RAILROAD
.15 MI S OF DOWNMAN ROAD, Orleans, LA
Built 1991 Load: 20.1 t
N. Blvd.
PoorOver: CANAL
1.0 MILE SOUTH OF I 12 OF, St. Tammany, LA
Built 1974 Load: 20.1 t ADT: 500
ROUSSELL ST
PoorOver: BAYOU TERREBONNE
0.01 M W OF EAST PARK, Terrebonne, LA
Built 1979 Load: 20.1 t ADT: 2,503
Marsh Rd
PoorOver: HEBERT CANAL
1.1 Mi W. of Prarie Rd, Vermilion, LA
Built 1973 Load: 20.1 t ADT: 25
Section Rd
PoorOver: BAYOU POYDRAS
62 Ft E LA 413, West Baton Rouge, LA
Built 1973 Load: 20.1 t ADT: 500
LA0153
PoorOver: DRAIN
4.19 MI NORTH OF LA 155, Bienville, LA
Built 1975 Load: 20.4 t ADT: 1,377
McCance Rd
PoorOver: Posten Bayou
6.0 MI N OF HWY 537, Bossier, LA
Built 1988 Load: 20.4 t ADT: 90
LA0764
PoorOver: DRAIN
3.06 MI NORTH OF US 84, De Soto, LA
Built 1971 Load: 20.4 t ADT: 1,933
Arleen Rd
PoorOver: SAUNDERS BAYOU
0.5 Mi W of LA 410, East Baton Rouge, LA
Built 1969 Load: 20.4 t ADT: 721
Milldale Rd
PoorOver: DRAINAGE BAYOU
2.9 M W of LA 409, East Baton Rouge, LA
Built 1959 Load: 20.4 t ADT: 377
Carson Rd
PoorOver: MILL CREEK
1.6 MI. SE. OF PRIDE, East Baton Rouge, LA
Built 1970 Load: 20.4 t ADT: 115
Pride-Baywood Rd
PoorOver: MILL CREEK
1.5 MI. E. OF PRIDE, East Baton Rouge, LA
Built 1960 Load: 20.4 t ADT: 1,118
Beau Pre Rd.
PoorOver: DE POCHES COULEE
0.70 Mi SW of US 90, Lafayette, LA
Built 1978 Load: 20.4 t ADT: 400
Galbert Rd.
PoorOver: COULEE
0.85 Mi W of I-10, Lafayette, LA
Built 1977 Load: 20.4 t ADT: 620
LA0009
PoorOver: EIGHT MILE CREEK
0.45 MI. NORTH OF LA 126, Natchitoches, LA
Built 1977 Load: 20.4 t ADT: 1,131
LA0151
PoorOver: CURRYS CREEK
,2 MI NORTH OF I-20, Ouachita, LA
Built 1950 Load: 20.4 t ADT: 2,862
CRAWFORD RD
PoorOver: PETTICOAT BAYOU
3 MI S PINE GROVE, Ouachita, LA
Built 1978 Load: 20.4 t ADT: 300
Airline Rd
PoorOver: Bayou Plaquemine Bruly
1.5 Mi. East of Ribbon Rd, St. Landry, LA
Built 1975 Load: 20.4 t ADT: 150
LA0315
PoorOver: FALGOUT CANAL
11.0 MI SOUTH OF LA 661, Terrebonne, LA
Built 1964 Load: 20.4 t ADT: 2,378
LA0082
PoorOver: SEVENTH WARD CANAL
4.35 MI W. OF LA 35, Vermilion, LA
Built 1957 Load: 20.4 t ADT: 2,899
LA0964
PoorOver: RIDDLE CREEK
2.0 M S of US 61&LA 954, West Feliciana, LA
Built 1958 Load: 20.4 t ADT: 1,650
LA0427
PoorOver: BAYOU MANCHAC
2.1 MI W OF LA 42, Ascension, LA
Built 1972 Load: 20.7 t ADT: 11,384
LA0001
PoorOver: KCS RR/JONES ST
2.6 MI NORTH OF LA 3032, Caddo, LA
Built 1954 Load: 20.7 t ADT: 15,401
FDR 119
PoorOver: SOCIA CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 20.7 t ADT: 30
JOHNSTON STREET
PoorOver: COULEE MINE BR
0.3 MILES EAST OF LA 3025, Lafayette, LA
Built 1958 Load: 20.7 t ADT: 29,320
ALMONASTER AVE
PoorOver: CITY STREET/RAILROAD
.15 MI S OF DOWNMAN ROAD, Orleans, LA
Built 1991 Load: 20.7 t ADT: 22,680
Coldwater
PoorOver: RANGE CREEK
APP. 2.75 MI. NW OF US 84, Winn, LA
Built 1970 Load: 20.7 t ADT: 61
Spring Bayou Rd
PoorOver: SPRING BAYOU
2 MI. NORTH OF GOUDE, Avoyelles, LA
Built 1978 Load: 20.9 t ADT: 150
LA0170
PoorOver: TIGER BRANCH
3.2 MI EAST OF LA 1, Caddo, LA
Built 1930 Load: 20.9 t ADT: 1,209
LA0124
PoorOver: BROKE LEG BAYOU
0.6 MI NORTH OF LA 3102, Catahoula, LA
Built 1960 Load: 20.9 t ADT: 287
LA0556
PoorOver: JACK CREEK
3.94 MI WEST OF LA 144, Jackson, LA
Built 1968 Load: 20.9 t ADT: 376
PLUM HILL RD
PoorOver: DRAIN TO GUYTON CREEK
1.4 MI. N. INT. 178, Ouachita, LA
Built 1976 Load: 20.9 t ADT: 30
RAY RD
PoorOver: BOOKER BRANCH
1 MI NW CADEVILLE, Ouachita, LA
Built 1965 Load: 20.9 t ADT: 35
US0080
PoorOver: COOLEY BRANCH
1.79 MI EAST OF LA 159, Webster, LA
Built 1954 Load: 20.9 t ADT: 3,955
Poole Road (North)
PoorOver: Cocodrie Bayou
LOGMI 5.7 M NW of H 15, Concordia, LA
Built 1975 Load: 21.1 t ADT: 110
LA0315
PoorOver: PROVOST BAYOU
8.6 MI SOUTH OF LA 661, Terrebonne, LA
Built 1953 Load: 21.1 t ADT: 6,715
Saltzman Rd
PoorOver: COULEE
1.3 Mi S of La 711, Vermilion, LA
Built 1968 Load: 21.1 t ADT: 140
US0080
PoorOver: BAYOU DORCHEAT
.2 MI EAST OF US 371, Webster, LA
Built 1954 Load: 21.1 t ADT: 9,109
Showing 11,851-11,900 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 |