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
LA0648
PoorOver: DRAIN CANAL
.62 MI EAST OF LA 648, Lafourche, LA
Built 1959 Load: 13.3 t ADT: 9,183
Dumaine St.
PoorOver: BAYOU SAINT JOHN
0.0MI.W.OF MOSS, Orleans, LA
Built 1951 Load: 13.3 t
LA0082
PoorOver: MILLER CANAL
10.21 Mi S of LA 3147, Vermilion, LA
Built 1958 Load: 13.3 t ADT: 2,899
Katie Rd
PoorOver: DRAINAGE DITCH
0.25 MI. SOUTH OF LA 1181, Avoyelles, LA
Built 1965 Load: 13.6 t ADT: 100
Frenchtown Rd
PoorOver: DRAUGHAN CREEK
1.6 M E of LA 73, East Baton Rouge, LA
Built 1960 Load: 13.6 t ADT: 4,745
LA0577
PoorOver: BULL BAYOU
2.0 MI EAST OF LA 15, Franklin, LA
Built 1955 Load: 13.6 t ADT: 1,341
Sidney Leblanc Rd
PoorOver: Coulee
0.01 MILE E OF LA 83, Iberia, LA
Built 1986 Load: 13.6 t ADT: 293
West Herbert St
PoorOver: CREEK
250' N of US 165, LaSalle, LA
Built 1988 Load: 13.6 t ADT: 150
LA0544
PoorOver: CYPRESS CREEK
2.0 MI NORTH OF I-20, Lincoln, LA
Built 1961 Load: 13.6 t ADT: 11,636
CCC RD
PoorOver: MADDEN CREEK
5 MILES S SIMSBORO, Lincoln, LA
Built 1978 Load: 13.6 t ADT: 99
LA1033
PoorOver: GREYS CREEK
0.3 M SW OF LA 16, Livingston, LA
Built 1955 Load: 13.6 t ADT: 2,876
LA0577
PoorOver: JOES BAYOU
1.6 MI NORTH OF LA 577, Madison, LA
Built 1969 Load: 13.6 t ADT: 161
LA0487
PoorOver: BRUSHY BAYOU
7.7 MI. N OF LA120, Natchitoches, LA
Built 1975 Load: 13.6 t ADT: 968
Old Victoria Rd
PoorOver: TRUDO CREEK
0.44 MILES NORTH OF ROBEL, Natchitoches, LA
Built 1985 Load: 13.6 t ADT: 80
LA0584
PoorOver: LITTLE CREEK
2.5 MI EAST OF LA 135, Richland, LA
Built 1961 Load: 13.6 t ADT: 77
TOBE NABOURS RD
PoorOver: TRIB.TOLEDO BD
TOBE NABOURS ROAD, Sabine, LA
Built 1968 Load: 13.6 t ADT: 60
LA0038
PoorOver: DARLING CREEK
0.5 Mi E of LA 432, St. Helena, LA
Built 1954 Load: 13.6 t ADT: 933
Hope Canal Rd
PoorOver: HOPE CANAL
0.38 MILES NORTH OF US.61, St. John the Baptist, LA
Built 1965 Load: 13.6 t
LA3158
PoorOver: DRAIN
0.2 MI S OF I-12, Tangipahoa, LA
Built 1975 Load: 13.6 t ADT: 11,309
Walnut St
PoorOver: CREEK
0.4 MI W US 51 WALNUT ST., Tangipahoa, LA
Built 1979 Load: 13.6 t ADT: 2,595
LA0399
PoorOver: LITTLE 6 MILE CR
.5 MI NORTH OF LA 10, Vernon, LA
Built 1965 Load: 13.6 t ADT: 396
LA0436
PoorOver: DRAIN
1.1 M E OF LA 62, Washington, LA
Built 1958 Load: 13.6 t ADT: 1,306
LA1074
PoorOver: TALLEYS CREEK
1.3 Mi NE of LA 16, Washington, LA
Built 1958 Load: 13.6 t ADT: 1,186
US0371
PoorOver: ICG RR @ SIBLEY
.1 MI SOUTH OF LA 164, Webster, LA
Built 1935 Load: 13.6 t ADT: 6,469
LA0159
PoorOver: LEONARD BRANCH
.7 MI NORTH OF LA 615, Webster, LA
Built 1966 Load: 13.6 t ADT: 1,754
LA0586
PoorOver: TIGER BAYOU
4.3 MI EAST OF LA 583, West Carroll, LA
Built 1959 Load: 13.6 t ADT: 242
LA0124
PoorOver: BIG BRANCH
1.82 MI. EAST OF US 84, Winn, LA
Built 1964 Load: 13.6 t ADT: 1,348
LA0124
PoorOver: GODFREY CREEK
8.6 MI EAST OF US 84, Winn, LA
Built 1965 Load: 13.6 t ADT: 1,348
LA0124
PoorOver: BEECH CREEK
8.8 MI EAST OF US 84, Winn, LA
Built 1965 Load: 13.6 t ADT: 1,348
LA0124
PoorOver: BEECH CREEK
8.85 MI EAST OF US 84, Winn, LA
Built 1965 Load: 13.6 t ADT: 1,348
US0080
PoorOver: CLARKE BAYOU
0.2 MI EAST OF LA 164, Bossier, LA
Built 1956 Load: 13.9 t ADT: 4,052
Locksley Dr
PoorOver: LAT. OF LIVELY BAYOU
.40 MI. NORTH OF FLA.BLVD, East Baton Rouge, LA
Built 1974 Load: 13.9 t ADT: 1,909
FDR 521
PoorOver: FOUR MILE BRANCH
LOGMI 0.19 FR 532 TO, Grant, LA
Built 1955 Load: 13.9 t ADT: 26
W. Willow St.
PoorOver: COULEE
1.42 Mi W of LA 3184, Lafayette, LA
Built 1978 Load: 13.9 t ADT: 1,800
LA0399
PoorOver: LITTLE 6 MILE CR.RELF.
.56 MI NORTH OF LA 10, Vernon, LA
Built 1965 Load: 13.9 t ADT: 396
LA0076
PoorOver: CHALPIN BAYOU
0.1 miles west of La 413, West Baton Rouge, LA
Built 1980 Load: 13.9 t ADT: 7,562
LA0124
PoorOver: SANDY CREEK
2.8 MI EAST OF US 84, Winn, LA
Built 1964 Load: 13.9 t ADT: 1,348
Bryan Kelly
PoorOver: LIME BRANCH
1.13 MI. NORTH OF US 84, Winn, LA
Built 1970 Load: 13.9 t ADT: 95
US0080
PoorOver: ALLIGATOR BAYOU
1.2 MI E OF LA782-2, Bossier, LA
Built 1955 Load: 14.3 t ADT: 15,627
LA0529
PoorOver: CANEY CREEK
2.2 MI NORTH OF LA 160, Bossier, LA
Built 1978 Load: 14.3 t ADT: 494
LA0327-S
PoorOver: BAYOU FOUNTIAN
0.3 M N of LA 42&LA 327-S, East Baton Rouge, LA
Built 1968 Load: 14.3 t ADT: 3,993
Auto Plex Dr
PoorOver: CLAYCUT BAYOU
.01 MI SOUTH OF AIRLINE, East Baton Rouge, LA
Built 1978 Load: 14.3 t ADT: 389
Milldale Rd
PoorOver: DRAINAGE BAYOU
2.6 MI SOUTHWEST OF, East Baton Rouge, LA
Built 1959 Load: 14.3 t ADT: 377
LA3066
PoorOver: CENTENNIAL CANAL
2.5 M SW of LA 1&LA 3066, Iberville, LA
Built 1968 Load: 14.3 t ADT: 2,052
LA0308
PoorOver: LEBRETON CANAL
.5 MI SOUTH OF LA 3162, Lafourche, LA
Built 1963 Load: 14.3 t ADT: 5,198
ST. CLAUDE /LA 46
PoorOver: INDUSTRIAL CANAL
2.28 MI SOUTH OF LA 39, Orleans, LA
Built 1950 Load: 14.3 t ADT: 23,049
Park Ave
PoorOver: Richards Gully
0.30 Mi E OF Jake St, St. Landry, LA
Built 1987 Load: 14.3 t ADT: 1,500
LA1054
PoorOver: TYNER CREEK
4.4 Mi N. of LA 40, Tangipahoa, LA
Built 1967 Load: 14.3 t ADT: 1,063
LA1074
PoorOver: SALS BRANCH
0.7 M W OF LA 1075, Washington, LA
Built 1958 Load: 14.3 t ADT: 1,186
Deer Park Rd
PoorOver: COULEE
0.6 Mi W. of La 98, Acadia, LA
Built 1998 Load: 14.5 t ADT: 48
Showing 11,501-11,550 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 |