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
LA0550
PoorOver: VILLAGE CREEK
4.1 MI NORTH OF LA 2, Union, LA
Built 1982 Load: 33.4 t ADT: 464
LA0027
PoorOver: CHOUPIQUE BAYOU
3.4 MI SOUTH OF LA 1133, Calcasieu, LA
Built 1979 Load: 33.6 t ADT: 6,981
Fir Ave.
PoorOver: Blanc Bayou
0.8 Mi. W. of LA 13, Acadia, LA
Built 1967 Load: 33.7 t ADT: 2,592
Devall Rd
PoorOver: DRAINAGE BAYOU
1.4 M E OF LA 44, Ascension, LA
Built 1970 Load: 33.7 t ADT: 200
LA0046
PoorOver: NO PUBLIC BELT R/R
2.21 MI SOUTH OF LA 39, Orleans, LA
Built 1960 Load: 34.0 t ADT: 23,049
AVERY RD
PoorOver: BRANCH OF CYPRESS CREEK
3 MI SW LUNA, Ouachita, LA
Built 1965 Load: 34.0 t ADT: 32
LA0511
PoorOver: RED R.,C.FANT PKWY,AR TE
1.0 MI WEST OF US 71, Bossier, LA
Built 1968 Load: 34.3 t ADT: 28,999
LA0001
PoorOver: CANE RIVER
.8 MI. N OF S INT LA490, Natchitoches, LA
Built 1963 Load: 34.5 t ADT: 748
HOPEWELL CROSSING
PoorOver: BUNDICK CREEK
1.8 MI N of LA 394, Beauregard, LA
Built 1984 Load: 34.7 t ADT: 825
US0011
PoorOver: IRISH BAYOU
4.83 MI NORTH OF US 90, Orleans, LA
Built 1978 Load: 35.0 t ADT: 3,912
LA0015
PoorOver: BAYOU LAFOUCHE
5.4 MI EAST OF LA 841, Ouachita, LA
Built 1953 Load: 35.3 t ADT: 2,382
LA0004
PoorOver: GRAND BAYOU
1.0 MI NORTH OF LA 790, Bienville, LA
Built 1977 Load: 35.4 t ADT: 1,013
LA0015
PoorOver: TENSAS RIVER @ CLAYTON
.01 MI WEST OF LA 566, Catahoula, LA
Built 1971 Load: 35.4 t ADT: 4,592
LAKE FOREST BLVD
PoorOver: CITRUS CANAL
0.1MI.E OF BUNDY ROA, Orleans, LA
Built 1975 Load: 35.6 t ADT: 1,000
US0167
PoorOver: KCS RR
2.26 MILE NORTH OF LA 505, Winn, LA
Built 1976 Load: 36.3 t ADT: 5,107
US0167
PoorOver: BAYOU D'ARBONNE
1.0 M. N OF N JCT. LA 822, Lincoln, LA
Built 1952 Load: 36.6 t ADT: 2,487
Lake Forest BLVD
PoorOver: BENSON CANAL
0.3 MI. E. OF CROWDE, Orleans, LA
Built 1975 Load: 36.6 t
LA0147
PoorOver: SALINE BAYOU
2.0 MI WEST OF LA 9, Bienville, LA
Built 1979 Load: 37.2 t ADT: 1,988
LA0009
PoorOver: BRANCH
1.2 MI NORTH OF LA 4, Bienville, LA
Built 1971 Load: 37.2 t ADT: 342
LA0155
PoorOver: CANEY CREEK
1.2 MI EAST OF LA 147, Bienville, LA
Built 1978 Load: 37.2 t ADT: 1,222
LA0518
PoorOver: GEE CREEK
4.36 MI NORTH OF LA 146, Claiborne, LA
Built 1979 Load: 37.2 t ADT: 389
LA0534
PoorOver: BRANCH
4.5 MI NORTH OF LA 534-S, Claiborne, LA
Built 1973 Load: 37.2 t ADT: 118
LA0534
PoorOver: CREEK
5.6 MI NORTH OF LA 534-S, Claiborne, LA
Built 1974 Load: 37.2 t ADT: 118
LA0507
PoorOver: CREEK
5.8 MI NORTH OF LA 786, Red River, LA
Built 1975 Load: 37.2 t ADT: 589
TRAILS END RD
PoorOver: BAYOU BONNE IDEE
3.9 MI E. INT. US 425, Morehouse, LA
Built 1986 Load: 37.3 t ADT: 150
LA0027
PoorOver: CRAB GULLY
4.5 MI N OF LA 390, Cameron, LA
Built 1957 Load: 37.6 t ADT: 3,884
High Meadow Blvd
PoorOver: COULEE
.4 Mi N of Toronto Dr., Lafayette, LA
Built 1974 Load: 37.9 t ADT: 1,100
LA0009
PoorOver: READHIMER CREEK
2.43 M. N of 155, Bienville, LA
Built 1971 Load: 38.1 t ADT: 1,172
LA0009
PoorOver: SIX MILE CREEK
1.6 MI NORTH OF LA 4, Bienville, LA
Built 1971 Load: 38.1 t ADT: 342
LA0508
PoorOver: CREEK
1.3 MI EAST OF LA 507, Bienville, LA
Built 1979 Load: 38.1 t ADT: 475
LA0169
PoorOver: WALNUT BAYOU
0.8 MI EAST OF LA 538, Caddo, LA
Built 1970 Load: 38.1 t ADT: 311
LA0151
PoorOver: DARBONNE BAYOU
1.7 MI EAST OF LA 563, Lincoln, LA
Built 1975 Load: 38.1 t ADT: 2,216
LA1036
PoorOver: TICKFAW RIVER
1.3 MI NW of LA 441, Livingston, LA
Built 1973 Load: 38.1 t ADT: 426
LA0593
PoorOver: BAYOU BARTHOLOMEW
2.39 MI NORTH OF US 425, Morehouse, LA
Built 1966 Load: 38.1 t ADT: 1,182
LA0157
PoorOver: CYPRESS CREEK RELIEF
6.77 MI EAST OF US 371, Webster, LA
Built 1982 Load: 38.1 t ADT: 1,757
LA3008
PoorOver: HOLDER CREEK
7.7 MI SOUTH OF LA 160, Webster, LA
Built 1974 Load: 38.1 t ADT: 145
US0071
PoorOver: CROSS BAYOU
.1 MI NORTH OF LA 173, Caddo, LA
Built 1966 Load: 38.6 t ADT: 17,247
LA0113
PoorOver: SUGAR CREEK
0.7 MI. N OF INT LA112, Beauregard, LA
Built 1972 Load: 39.0 t ADT: 709
US0165
PoorOver: CREEK
.9 MI NORTH OF LA 125 SPU, LaSalle, LA
Built 1948 Load: 39.0 t ADT: 3,518
US0165
PoorOver: CHICKASAW CREEK
1.1 MI NORTH OF LA 125 SP, LaSalle, LA
Built 1948 Load: 39.0 t ADT: 3,518
LA0151
PoorOver: CREEK
2.12 M. W. OF S. JCT. LA, Ouachita, LA
Built 1967 Load: 39.0 t ADT: 2,862
COMMON ST
PoorOver: DRAINAGE CANAL
0.4 MI. N. OF 12TH ST., Calcasieu, LA
Built 1928 Load: 39.2 t ADT: 3,974
Beau Bassin Rd
PoorOver: COULEE
1.34 Mi N of LA 98, Lafayette, LA
Built 1992 Load: 39.5 t ADT: 650
LA0516
PoorOver: HOPE CREEK
3.2 MI EAST OF US 371, Bienville, LA
Built 1961 Load: 39.9 t ADT: 177
LA3015
PoorOver: BAYOU CASTOR
2.11 MI EAST OF LA 5, De Soto, LA
Built 1972 Load: 39.9 t ADT: 1,157
US0084
PoorOver: RELIEF BRIDGE
.21 MI EAST OF US 165, LaSalle, LA
Built 1962 Load: 39.9 t ADT: 1,473
LA0119
PoorOver: BAYOU PIERRE
5.89 MI. NORTH OF LA 8, Natchitoches, LA
Built 1971 Load: 39.9 t ADT: 189
I0049
PoorOver: B CLEAR DIVERSION CANAL
0.64 MI. NORTH OF LA 3265, Rapides, LA
Built 1990 Load: 39.9 t ADT: 11,969
LA0095
PoorOver: DRAINAGE CANAL
2.88 MI NORTH OF LA 35, Acadia, LA
Built 1984 Load: 40.8 t ADT: 1,035
I0020
PoorOver: MACKS BAYOU
0.02 MI W OF LA 782-2, Bossier, LA
Built 1967 Load: 40.8 t ADT: 15,642
Showing 12,101-12,150 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 |