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
Lanier Ln
PoorOver: CREEK
5 MI NE OF SR 22 EXI, Tangipahoa, LA
Built 1970 Load: 17.1 t ADT: 12
Stateline Rd
PoorOver: DRAIN
1.1 MI SE US 51 & LA 1054, Tangipahoa, LA
Built 1984 Load: 17.1 t ADT: 128
Pistol Thomas Rd
PoorOver: BLACK BAYOU
0.48 MI. E. OF LA. 159, Webster, LA
Built 1956 Load: 17.1 t ADT: 110
LA0943
PoorOver: BAYOU MCCALL
1.4 M W of LA 1&LA 943, Ascension, LA
Built 1972 Load: 17.2 t ADT: 350
LA0110
PoorOver: CREEK
4.3 MI W of LA 27, Beauregard, LA
Built 1982 Load: 17.2 t ADT: 1,947
SHELL BEACH DR
PoorOver: DRAINAGE CANAL
0.3 MI S of LA 385, Calcasieu, LA
Built 1937 Load: 17.2 t ADT: 8,548
Robinson Rd
PoorOver: FLANAGAN BAYOU
1 MI N. NW. OF PRIDE, LA, East Baton Rouge, LA
Built 1980 Load: 17.2 t ADT: 790
LA0016
PoorOver: CANAL
0.5 M S OF I-12, Livingston, LA
Built 1955 Load: 17.2 t ADT: 10,776
Morrison Rd
PoorOver: SAINT CHARLES CANAL
0.5 M E. OF NEW CASTLE, Orleans, LA
Built 1960 Load: 17.2 t
LA0134
PoorOver: CREEK
2.8 MI EAST OF LA 136, Ouachita, LA
Built 1957 Load: 17.2 t ADT: 3,462
Turkey Cr Cut-off
PoorOver: CLEAR CREEK
3.6 MILES SE OF US 165, Rapides, LA
Built 1980 Load: 17.2 t ADT: 300
LA0160
PoorOver: DORCHEAT BAYOU RELIEF
1.22 MI West OF LA 3008, Webster, LA
Built 1977 Load: 17.2 t ADT: 537
Double Church
PoorOver: COULEY CREEK
APP. 2.5 MI. S. OF US 84, Winn, LA
Built 1979 Load: 17.2 t ADT: 39
LA0944
PoorOver: BAYOU MCCALL
0.6 M SW of LA 1&LA 943, Ascension, LA
Built 1972 Load: 17.5 t ADT: 98
Summerfield Rd
PoorOver: LAKE VILLARS
.9 MI.S.OF PORT VINC, Ascension, LA
Built 1975 Load: 17.5 t ADT: 250
Summerfield Rd
PoorOver: LAKE VILLAKS
.9 MI.S.OF PORT VINC, Ascension, LA
Built 1975 Load: 17.5 t ADT: 250
LA0501
PoorOver: CREEK
3.61 MI SOUTH OF LA 4, Bienville, LA
Built 1960 Load: 17.5 t ADT: 318
LA0765
PoorOver: GARRISON CREEK
1.94 MI WEST OF LA 764, De Soto, LA
Built 1974 Load: 17.5 t ADT: 1,150
Centurion Ave
PoorOver: DRAIN BAYOU
.50 MI N. O'NEAL LANE, East Baton Rouge, LA
Built 1977 Load: 17.5 t ADT: 379
Chaney Rd
PoorOver: WIND BAYOU
1.2 MI SOUTHWEST OF, East Baton Rouge, LA
Built 1972 Load: 17.5 t ADT: 668
Canberra Rd.
PoorOver: COULEE
0.39 Mi Eof US 167, Lafayette, LA
Built 1983 Load: 17.5 t ADT: 1,120
US0165
PoorOver: MP RAILROAD
2.5 MI NORTH OF SOUTH INT, Morehouse, LA
Built 1939 Load: 17.5 t ADT: 1,405
Veazie Rd
PoorOver: COMPANY CANAL
1.7 Mi N. of LA 10, St. Landry, LA
Built 1980 Load: 17.5 t ADT: 250
LA0352
PoorOver: BAYOU AMY
2.0 MI EAST OF LA 349, St. Martin, LA
Built 1968 Load: 17.5 t ADT: 2,711
LA0975
PoorOver: CREEK
4.9 MI N of I-10, St. Martin, LA
Built 1968 Load: 17.5 t ADT: 231
CHRIS KENNEDY RD
PoorOver: GUM CREEK
1.32 MI. SOUTH OF LA 41, St. Tammany, LA
Built 1984 Load: 17.5 t ADT: 848
Brown Rd
PoorOver: CREEK
4.5 MI NE OF SR 22 E, Tangipahoa, LA
Built 1976 Load: 17.5 t ADT: 1,473
N. Jackson Rd
PoorOver: EVANS BR.
1.8 MI SW OF JCT 106, Tangipahoa, LA
Built 1975 Load: 17.5 t ADT: 57
MCRAE ST
PoorOver: CASTOR BAYOU TRIB.
0.16 MI. S. OF BOONE ST., Vernon, LA
Built 1974 Load: 17.5 t ADT: 80
LA0026
PoorOver: CREEK
4.2 MI E OF LA 377, Allen, LA
Built 1968 Load: 17.8 t ADT: 2,151
TOPSY BEL RD
PoorOver: BARNES CREEK
3.7 MI. S. OF US 190, Allen, LA
Built 1972 Load: 17.8 t ADT: 664
K C Rd
PoorOver: BAYOU NARCISSE
2.7 MI NE DUTCHTOWN, Ascension, LA
Built 1970 Load: 17.8 t ADT: 250
LA0009
PoorOver: SPRAWLS MILL CREEK
1.0 MI N. OF LA 155, Bienville, LA
Built 1970 Load: 17.8 t ADT: 1,172
LA0534
PoorOver: DRAIN
1.4 MI NORTH OF LA 534-S, Claiborne, LA
Built 1973 Load: 17.8 t ADT: 118
LA0010
PoorOver: Nezpique Bayou E. Fork
9.0 MI SOUTH OF LA 106, Evangeline, LA
Built 1950 Load: 17.8 t ADT: 1,599
FDR 102
PoorOver: INDIAN CREEK
NATIONAL FOREST, Grant, LA
Built 1965 Load: 17.8 t ADT: 12
NEW COMER RD.
PoorOver: BAYOU
2.3 MI E of LA 383, Jefferson Davis, LA
Built 1979 Load: 17.8 t ADT: 40
FDR 354
PoorOver: HYATT BRANCH
NO DATA ENTERED, Natchitoches, LA
Built 1970 Load: 17.8 t ADT: 30
FDR 240
PoorOver: CASTOR
NO DATA ENTERED, Rapides, LA
Built 1972 Load: 17.8 t ADT: 30
LA0082
PoorOver: TURF BAYOU
12.49 Mi W of La 3147, Vermilion, LA
Built 1958 Load: 17.8 t ADT: 2,899
River Rd
PoorOver: BOGUE CHITTO CREEK
1.35 M S of LA 438, Washington, LA
Built 1983 Load: 17.8 t ADT: 582
LA0002
PoorOver: COLEWA CREEK
4.0 MI EAST OF LA 585, West Carroll, LA
Built 1953 Load: 17.8 t ADT: 2,725
FDR 542
PoorOver: COULEY CREEK
LOGMI 1.30 FR 594 TO, Winn, LA
Built 1965 Load: 17.8 t ADT: 10
Rexmere Crossing
PoorOver: BAYOU DES GLAISES
8M NNW OF SIMMESPORT, Avoyelles, LA
Built 1991 Load: 18.1 t ADT: 80
LA0506
PoorOver: BYRD CREEK
.7 MI EAST OF LA 849, Caldwell, LA
Built 1960 Load: 18.1 t ADT: 300
N Achord Rd
PoorOver: DRAINAGE BAYOU
3.8 MI NE JCT I-10 L, East Baton Rouge, LA
Built 1970 Load: 18.1 t ADT: 1,732
Old Baker Zachary
PoorOver: DRAINAGE BAYOU
0.7 MI. N.W. of LA 19, East Baton Rouge, LA
Built 1960 Load: 18.1 t ADT: 1,727
Eagle Dr
PoorOver: W. BRANCH CYPRESS BAYOU
EAGLE DR., ZACHARY,L, East Baton Rouge, LA
Built 1976 Load: 18.1 t ADT: 680
FDR 145-A
PoorOver: DRY PRONG CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 18.1 t ADT: 13
LA0556
PoorOver: DRY CREEK
3.81 MI WEST OF LA 144, Jackson, LA
Built 1968 Load: 18.1 t ADT: 376
Showing 11,701-11,750 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 |