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
Alice C. Rd.
FairOver: Yellow Bayou Canal
0.8 Mi. W. of LA 317, St. Mary, LA
Built 1968 Load: 16.8 t ADT: 1,220
Chatsworth Rd
FairOver: Yokely Bayou
0.3 Mi S of LA 3211, St. Mary, LA
Built 1967 Load: 16.8 t ADT: 1,770
MARLIN DRIVE
FairOver: CANAL
0.17 MI S OF LA.433, St. Tammany, LA
Built 1983 Load: 16.8 t ADT: 300
MORAY DRIVE
FairOver: CANAL
0.61 MI S OF LA 433, St. Tammany, LA
Built 1983 Load: 16.8 t ADT: 100
LA0038
FairOver: CREEK
0.9 M E OF LA 1061, Tangipahoa, LA
Built 1961 Load: 16.8 t ADT: 1,520
E. Cooper Rd
FairOver: DAVIS BRANCH
1 MI. NE OF JCT LA40&1054, Tangipahoa, LA
Built 2002 Load: 16.8 t ADT: 601
LA0182
FairOver: BAYOU TERREBONNE
.1 MI EAST OF LA 24 WEST, Terrebonne, LA
Built 1968 Load: 16.8 t ADT: 8,732
FDR 400
FairOver: DRAKE CREEK
5.1 M. WNW. OF CRAVE, Vernon, LA
Built 1970 Load: 16.8 t ADT: 30
Ben's Ford Rd
FairOver: ADAMS CREEK PIPE
0.5 MI N. OF HWY LA 439, Washington, LA
Built 1995 Load: 16.8 t ADT: 1,259
LA0316
FairOver: ICWW / BAYOU BLUE
2.3 MI NORTH OF LA 24, Lafourche, LA
Built 1972 Load: 17.0 t ADT: 2,407
LA0036
FairOver: CREEK
0.2 M E OF LA 434, St. Tammany, LA
Built 1955 Load: 17.0 t ADT: 2,206
LA0430
FairOver: DRAIN
1.2 M NE OF LA 25, Washington, LA
Built 1968 Load: 17.0 t ADT: 4,643
LA1234
FairOver: DRAIN
2.47 MI NORTH OF LA 126, Winn, LA
Built 1967 Load: 17.0 t ADT: 94
EAST ST
FairOver: BUXTON CREEK
0.1 MI N of PATRICIA H RD, Calcasieu, LA
Built 1955 Load: 17.1 t ADT: 50
LA0506
FairOver: CREEK
.3 MI WEST OF US 165, Caldwell, LA
Built 1978 Load: 17.1 t ADT: 306
L. Dubois Rd
FairOver: Coulee
1.2 Mi. E. of La 329, Iberia, LA
Built 1993 Load: 17.1 t ADT: 89
B. SEGNETTE ST PK
FairOver: WHISKY BAYOU
0.4 MI NW OF DRAKE AVE, Jefferson, LA
Built 1999 Load: 17.1 t
A. J. Williams
FairOver: MIDDLE COLYELL CREEK
1.5MIE.OF JCT 447& 1024, Livingston, LA
Built 1968 Load: 17.1 t ADT: 100
CLEVELAND ST
FairOver: STALKINGHEAD CREEK
0.6 MI S of US 165, Morehouse, LA
Built 1993 Load: 17.1 t ADT: 300
GATLEY ST
FairOver: BLACK BAYOU
IN WEST MONROE, Ouachita, LA
Built 1975 Load: 17.1 t ADT: 300
LA0550
FairOver: CREEK
2.1 MI NORTH OF LA 15, Union, LA
Built 1957 Load: 17.1 t ADT: 464
LA0008
FairOver: PARMER CREEK
3.4 MI EAST OF LA 469, Vernon, LA
Built 1956 Load: 17.1 t ADT: 1,700
Harvey's Barb Shop
FairOver: BLACK BOTTOM BRANCH
3.5 MI SE OF HWY 532, Webster, LA
Built 1979 Load: 17.1 t ADT: 87
Beco Rd
FairOver: NEW RIVER CANAL
0.7M NE JCT US 61 & LA 30, Ascension, LA
Built 1991 Load: 17.2 t ADT: 500
Cardinal Loop
FairOver: CHOCTAW BAYOU
0.74 MILES NE OF LA 1, Avoyelles, LA
Built 1921 Load: 17.2 t ADT: 100
MAPLEWOOD DR
FairOver: Maple Fork
0.1 MI. E. of LA 108, Calcasieu, LA
Built 1967 Load: 17.2 t ADT: 8,540
LA0717
FairOver: KLONDIKE CANAL
5.6 MI W of LA 14, Cameron, LA
Built 1966 Load: 17.2 t ADT: 511
LA0124
FairOver: DIVERSION CANAL
2.8 MI NORTH OF LA 3102, Catahoula, LA
Built 1967 Load: 17.2 t ADT: 410
N Foster Dr
FairOver: CLOUDS CANAL
.33 MI N LA 73, LA37 JCT, East Baton Rouge, LA
Built 1962 Load: 17.2 t ADT: 21,978
N Foster Dr
FairOver: MELROSE CANAL
.94 MI N LA 73, LA 37 JCT, East Baton Rouge, LA
Built 1962 Load: 17.2 t ADT: 19,672
FDR 102
FairOver: BRICK CREEK
NATIONAL FOREST, Grant, LA
Built 1965 Load: 17.2 t ADT: 12
LA0102
FairOver: DRAIN
1.5 MI E OF LA 395, Jefferson Davis, LA
Built 1954 Load: 17.2 t ADT: 3,728
LA0092
FairOver: VERMILION R @ MILTON
1.2 MI WEST OF LA 733, Lafayette, LA
Built 1948 Load: 17.2 t ADT: 738
N. Girouard Rd
FairOver: COULEE
0.40 MI. N. LA182-US90, Lafayette, LA
Built 1978 Load: 17.2 t ADT: 960
Acadian Hills Ln.
FairOver: DRAINAGE CANAL
0.75 Mi SW of I-49, Lafayette, LA
Built 1984 Load: 17.2 t ADT: 1,400
LA0020
FairOver: DRAINAGE CANAL
5.2 MI NORTH OF LA 308, Lafourche, LA
Built 1968 Load: 17.2 t ADT: 20,091
W. 79TH ST
FairOver: LAFOURCHE BAYOU
0.01 MI E. OF LA 1, Lafourche, LA
Built 1956 Load: 17.2 t ADT: 3,633
LA0002
FairOver: BAYOU GALION
2.09 MI EAST OF US 165, Morehouse, LA
Built 1955 Load: 17.2 t ADT: 2,815
NO DATA ENTERED
FairOver: BAYOU L'IVROGNE
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1975 Load: 17.2 t ADT: 30
US0090-B
FairOver: MISSISSIPPI RIVER
1.4 MI W OF LA 428, Orleans, LA
Built 1985 Load: 17.2 t ADT: 154,311
Ahtus Melder Rd
FairOver: SPRING CREEK
3.0 MI. SOUTH OF LA 112, Rapides, LA
Built 2011 Load: 17.2 t ADT: 169
Hughes Rd
FairOver: LASALLE COULEE
0.4 Mi.E of US 90, St. Martin, LA
Built 1970 Load: 17.2 t ADT: 144
Huval St
FairOver: TRUE CANAL
0.4 Mi N of LA 352, St. Martin, LA
Built 1967 Load: 17.2 t ADT: 208
LA0022
FairOver: BLACK RIVER
LA 22, St. Tammany, LA
Built 1935 Load: 17.2 t ADT: 9,784
Old Covington Hwy.
FairOver: PONCHATOULA CREEK
1 MI W OF JCT 3158 &, Tangipahoa, LA
Built 1957 Load: 17.2 t ADT: 7,323
Wardline Rd
FairOver: CREEK
2.2 MI NW OF RT 190, Tangipahoa, LA
Built 1976 Load: 17.2 t ADT: 5,582
White Rd
FairOver: RRTKCR OVER PEAKS CREEK
4 MI S.W. OF JCT 445 & 16, Tangipahoa, LA
Built 1999 Load: 17.2 t ADT: 4
Mixon Rd
FairOver: CHAPEPEELA CREEK
2.3 MI NW OF JCT 16, Tangipahoa, LA
Built 1975 Load: 17.2 t ADT: 126
Spencer Rd
FairOver: COULEE
5.2 Mi W of La 91, Vermilion, LA
Built 1960 Load: 17.2 t ADT: 70
FDR 837
FairOver: CYPRESS CREEK
P6032465931511, Webster, LA
Built 1972 Load: 17.2 t ADT: 15
Showing 1,401-1,450 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 |