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
FDR 556
FairOver: CREEK
LOGMI 0.90 FR 546 TO, Grant, LA
Built 1960 Load: 24.3 t ADT: 34
I0010
FairOver: BRIDGE 251 FR.RD
1.4 M E of LA 77, Iberville, LA
Built 1974 Load: 24.3 t ADT: 752
LA0556
FairOver: HUEY BRANCH
1.71MI WEST OF LA 144, Jackson, LA
Built 1970 Load: 24.3 t ADT: 376
WALL BLVD
FairOver: BAYOU FATMA
.80 MI S. OF LAPALCO BLVD, Jefferson, LA
Built 1988 Load: 24.3 t ADT: 8,000
LA0395
FairOver: DRAIN
2.0 MI NORTH OF I-10, Jefferson Davis, LA
Built 1957 Load: 24.3 t ADT: 3,596
LA0729
FairOver: VERMILION RIVER
0.4 MI E of LA 182, Lafayette, LA
Built 1982 Load: 24.3 t ADT: 2,293
LA0089
FairOver: COULEE DES POCHES
0.1 MI WEST OF US 90, Lafayette, LA
Built 1976 Load: 24.3 t ADT: 16,098
I0012
FairOver: COLYELL CREEK
I0012, Livingston, LA
Built 1969 Load: 24.3 t ADT: 78,208
FDR 287
FairOver: LONG BRANCH OVERFLO
NATIONAL FOREST ROAD, Rapides, LA
Built 1962 Load: 24.3 t ADT: 100
US0071
FairOver: MORGAN CREEK
2.9 MI NORTH OF LA 783, Red River, LA
Built 1950 Load: 24.3 t ADT: 2,544
LA0015
FairOver: MUDDY BAYOU
4.03 MI WEST OF LA 137, Richland, LA
Built 1938 Load: 24.3 t ADT: 2,198
CROW FARM RD
FairOver: GLAZE CREEK
5.7 M EAST INT 800, Union, LA
Built 1990 Load: 24.3 t ADT: 201
BAILEY RD
FairOver: BUNDICK CREEK
2.44 MILES EAST OF US 171, Vernon, LA
Built 1984 Load: 24.3 t ADT: 150
SARTOR ST
FairOver: CASTOR BAYOU TRIB.
0.29 M. S. OF BOONE ST, Vernon, LA
Built 1975 Load: 24.3 t ADT: 80
LA0160
FairOver: CREEK
3.6 MI EAST OF LA 3008, Webster, LA
Built 1957 Load: 24.3 t ADT: 502
LA0092
FairOver: LAZY POINT CANAL
3.6 MI E OF LA 1119, Acadia, LA
Built 1962 Load: 24.5 t ADT: 444
LA0367
FairOver: BAYOU PLAQUEMINE BRULE
1.6 MI NORTH OF LA 1113, Acadia, LA
Built 1962 Load: 24.5 t ADT: 2,465
LA0368
FairOver: BAYOU MALLET
0.28 MI EAST OF LA 755, Acadia, LA
Built 1962 Load: 24.5 t ADT: 398
LA0115
FairOver: COULEE DES GRUES
1.18 MILES SOUTH OF LA 1, Avoyelles, LA
Built 1961 Load: 24.5 t ADT: 5,309
Sligo Rd
FairOver: Hogskin Lake Creek
0.1 MI E OF LA 612, Bossier, LA
Built 1989 Load: 24.5 t ADT: 4,000
LA0538
FairOver: TIGER BRANCH
1.8 MI NORTH OF NORTH INT, Caddo, LA
Built 1924 Load: 24.5 t ADT: 962
LA0481
FairOver: COW BAYOU
4.31 MI NORTH OF LA 191, De Soto, LA
Built 1962 Load: 24.5 t ADT: 469
Chestnut St
FairOver: NORTHDALE CANAL
0.2 MI W of LA 3164, East Baton Rouge, LA
Built 1960 Load: 24.5 t ADT: 1,544
LA0471
FairOver: SUMMERFIELD BRANCH
1.22 MI NORTH OF US 71, Grant, LA
Built 1954 Load: 24.5 t ADT: 432
LA0148
FairOver: COLON CREEK
2.76 MI WEST OF LA 146, Jackson, LA
Built 1955 Load: 24.5 t ADT: 532
LA0020
FairOver: BAYOU LAFOURCHE
.01 MI WEST OF LA 308, Lafourche, LA
Built 1967 Load: 24.5 t ADT: 7,822
LA0042
FairOver: BLOOD RIVER
LA0042, Livingston, LA
Built 1961 Load: 24.5 t ADT: 1,783
LA0063
FairOver: CREEK
1.3 M NW OF LA 1019, Livingston, LA
Built 1963 Load: 24.5 t ADT: 1,234
LA1037
FairOver: BLOOD RIVER
LA1037, Livingston, LA
Built 1961 Load: 24.5 t ADT: 1,730
LA0001-X
FairOver: CANE RIVER
0.19 MI. NORTH OF LA 1223, Natchitoches, LA
Built 1936 Load: 24.5 t ADT: 11,003
LA0023
FairOver: ALGIERS OUTFALL CANAL
3.2 MI SE OF WESTBANK EXP, Plaquemines, LA
Built 1968 Load: 24.5 t ADT: 25,594
US0165
FairOver: SPRING CREEK
2.15 MI. NORTH OF LA 113, Rapides, LA
Built 1991 Load: 24.5 t ADT: 11,113
LA0584
FairOver: COW BAYOU
4.0 MI EAST OF US 425, Richland, LA
Built 1954 Load: 24.5 t ADT: 990
LA0037
FairOver: GLASS BRANCH
2.1 M SW OF LA 10, St. Helena, LA
Built 1960 Load: 24.5 t ADT: 1,781
LA0448
FairOver: ROCKY CREEK
LA0448, St. Helena, LA
Built 1962 Load: 24.5 t ADT: 547
LA0347
FairOver: POINT CLAIRE CA
1.1 Mi. N. of La 740, St. Landry, LA
Built 1965 Load: 24.5 t ADT: 9,963
LA0741
FairOver: BAYOU PORTAGE
4.08 MI SOUTH OF LA 103, St. Landry, LA
Built 1959 Load: 24.5 t ADT: 1,629
LA0746
FairOver: BAYOU BEOUF
0.01 MI NORTH OF LA 745, St. Landry, LA
Built 1962 Load: 24.5 t ADT: 66
LA0022
FairOver: CREEK
3.2 M W OF LA 445, Tangipahoa, LA
Built 1938 Load: 24.5 t ADT: 12,900
LA1064
FairOver: NATALBANY RIVER
LA1064, Tangipahoa, LA
Built 1957 Load: 24.5 t ADT: 2,854
LA0038
FairOver: SILVER CREEK
LA0038, Washington, LA
Built 1952 Load: 24.5 t ADT: 1,706
LA0438
FairOver: DRAIN
0.8 M W OF LA 25, Washington, LA
Built 1967 Load: 24.5 t ADT: 688
LA0438
FairOver: DRAIN
0.6 M W OF LA 25, Washington, LA
Built 1967 Load: 24.5 t ADT: 688
LA1228
FairOver: PORT DE LUCE CREEK
.65 MI NORTH OF LA 34, Winn, LA
Built 1967 Load: 24.5 t ADT: 362
LA0013
FairOver: CREEK
1.1 MI NORTH OF US 90, Acadia, LA
Built 1957 Load: 24.6 t ADT: 8,810
LA1120
FairOver: CANAL
6.1 miles North of I-10., Acadia, LA
Built 1974 Load: 24.6 t ADT: 801
LA0115
FairOver: BAYOU DULAC
7.91 MILES NORTH OF LA 29, Avoyelles, LA
Built 1950 Load: 24.6 t ADT: 3,936
LA1181
FairOver: BORROW PIT CANAL
4.31 M E OF W JCT LA 1182, Avoyelles, LA
Built 1979 Load: 24.6 t ADT: 1,716
LA0157
FairOver: CYPRESS BAYOU TRIBUTARY
1.71 MI NORTH OF LA 2, Bossier, LA
Built 1986 Load: 24.6 t ADT: 1,016
LA0154
FairOver: RED BRANCH
.9 MI NORTH OF LA 157, Bossier, LA
Built 1979 Load: 24.6 t ADT: 3,124
Showing 2,701-2,750 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 |