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
LA0126
FairOver: LITTLE CREEK
2.8 MI EAST OF LA 503, LaSalle, LA
Built 1963 Load: 23.6 t ADT: 183
LA3061
FairOver: SHEPHERD CREEK
1.46 MI EAST OF LA 818, Lincoln, LA
Built 1968 Load: 23.6 t ADT: 3,433
LA0016
FairOver: AMITE RIVER REL
1.5 M S OF LA 444, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,313
LA0016
FairOver: AMITE RIVER RELIEF
2.3 M S OF LA 444, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,313
LA0022
FairOver: ARTHUR SLOUGH
LA0022, Livingston, LA
Built 1959 Load: 23.6 t ADT: 2,745
LA0022
FairOver: PETITE AMITE
LA0022, Livingston, LA
Built 1959 Load: 23.6 t ADT: 2,745
LA0042
FairOver: CAMP CREEK
LA0042, Livingston, LA
Built 1960 Load: 23.6 t ADT: 4,071
LA0042
FairOver: CANEY BRANCH
LA0042, Livingston, LA
Built 1962 Load: 23.6 t ADT: 4,071
LA0042
FairOver: TICKFAW RIVER R.
LA0042, Livingston, LA
Built 1962 Load: 23.6 t ADT: 4,071
LA0042
FairOver: LIZARD CREEK
LA0042, Livingston, LA
Built 1961 Load: 23.6 t ADT: 2,466
LA1026
FairOver: CANAL
1.0 M SW OF LA 16, Livingston, LA
Built 1973 Load: 23.6 t ADT: 4,534
LA0040
FairOver: L NATALBANY R
LA0040, Livingston, LA
Built 1960 Load: 23.6 t ADT: 913
LA0040
FairOver: L NATALBANY REL
2.9 M E OF LA 43, Livingston, LA
Built 1960 Load: 23.6 t ADT: 913
LA1037
FairOver: LIZARD CREEK
LA1037, Livingston, LA
Built 1961 Load: 23.6 t ADT: 1,668
LA1025
FairOver: WEST COLYELL CR
LA1025, Livingston, LA
Built 1963 Load: 23.6 t ADT: 7,211
LA0603
FairOver: HARPER BAYOU
8.90 MI EAST OF SOUTH INT, Madison, LA
Built 1958 Load: 23.6 t ADT: 100
LA0117
FairOver: SHEARD BRANCH
3.98 MI N OF JCT LA 118, Natchitoches, LA
Built 1955 Load: 23.6 t ADT: 1,513
US0061
FairOver: METAIRIE RELIEF CANAL
.6 MI EAST OF I-10, Orleans, LA
Built 1939 Load: 23.6 t ADT: 31,223
US0061
FairOver: METAIRIE RELIEF CANAL
0.6 MI. WEST OF I-10, Orleans, LA
Built 1939 Load: 23.6 t ADT: 28,615
LA3048
FairOver: DRAIN
1.6 MI NORTH OF LA 584, Richland, LA
Built 1960 Load: 23.6 t ADT: 1,594
LA0174
FairOver: ESTES CREEK
4.16 MI. EAST OF LA 191, Sabine, LA
Built 1957 Load: 23.6 t ADT: 1,064
LA0118
FairOver: GOODSON CREEK
6.52 MI EAST OF US 171, Sabine, LA
Built 1961 Load: 23.6 t ADT: 1,471
LA0191
FairOver: BOSSIER BAYOU
3.2 MI NORTH OF LA 174, Sabine, LA
Built 1960 Load: 23.6 t ADT: 610
LA0441
FairOver: SABE CREEK
LA0441, St. Helena, LA
Built 1959 Load: 23.6 t ADT: 420
LA0440
FairOver: SPRING CREEK
1.3 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 409
LA0440
FairOver: TAYLOR CREEK
1.9 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 409
LA1041
FairOver: DUTCHMAN CREEK
LA1041, St. Helena, LA
Built 1962 Load: 23.6 t ADT: 403
LA1045
FairOver: NATALBANY RIVER
LA1045, St. Helena, LA
Built 1957 Load: 23.6 t ADT: 1,509
LA1046
FairOver: SPILLER CREEK
1.6 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 572
LA1046
FairOver: CAPS CREEK
2.5 M E OF LA 441, St. Helena, LA
Built 1958 Load: 23.6 t ADT: 572
LA1048
FairOver: CREEK
1.1 M SE OF LA 1047, St. Helena, LA
Built 1957 Load: 23.6 t ADT: 287
LA1048
FairOver: CREEK
1.2 M SE OF LA 1047, St. Helena, LA
Built 1957 Load: 23.6 t ADT: 287
LA1046
FairOver: NATALBANY RIVER
LA1046, St. Helena, LA
Built 1956 Load: 23.6 t ADT: 572
LA0103
FairOver: BAYOU COURTABLEAU
4.37 MI SOUTH OF LA 359, St. Landry, LA
Built 1937 Load: 23.6 t ADT: 2,097
LA0103
FairOver: BAYOU MALLET
1.26 MI NORTH OF LA 104, St. Landry, LA
Built 1960 Load: 23.6 t ADT: 616
LA0353
FairOver: BAYOU VERMILION
1.6 MI SOUTH OF LA 94, St. Martin, LA
Built 1976 Load: 23.6 t ADT: 3,749
Division Rd
FairOver: COULEE
0.4 Mi. SW of LA 345, St. Martin, LA
Built 1970 Load: 23.6 t ADT: 129
US0190
FairOver: FRENCH BRANCH
US0190, St. Tammany, LA
Built 1963 Load: 23.6 t ADT: 9,260
LA0442
FairOver: TANG RIVER RELIEF
LA0442, Tangipahoa, LA
Built 1963 Load: 23.6 t ADT: 1,762
LA0440
FairOver: JENNYS BRANCH
1.2 M W OF I-55, Tangipahoa, LA
Built 1958 Load: 23.6 t ADT: 2,498
LA0010
FairOver: CREEK
1.9 M W OF LA 1061, Tangipahoa, LA
Built 1955 Load: 23.6 t ADT: 1,335
LA0445
FairOver: BAILEY BRANCH
LA 0445, Tangipahoa, LA
Built 1963 Load: 23.6 t ADT: 1,342
LA0445
FairOver: CHAPPEPEELA CREEK
LA0445, Tangipahoa, LA
Built 1963 Load: 23.6 t ADT: 1,342
LA0445
FairOver: CHAP RELIEF CR.
LA0445, Tangipahoa, LA
Built 1963 Load: 23.6 t ADT: 1,342
LA1061
FairOver: BIG CREEK
LA1061, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 888
LA1061
FairOver: DYSON BRANCH
LA1061, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 1,199
LA1061
FairOver: BIG CREEK
LA1061, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 1,199
LA1061
FairOver: WEST BRANCH
1.8 M S OF LA 1057, Tangipahoa, LA
Built 1959 Load: 23.6 t ADT: 1,199
LA1049
FairOver: BEAVER CREEK
LA1049, Tangipahoa, LA
Built 1960 Load: 23.6 t ADT: 574
LA1045
FairOver: COONS BRANCH
LA 1045, Tangipahoa, LA
Built 1957 Load: 23.6 t ADT: 1,509
Showing 2,551-2,600 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 |