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
I0049
FairOver: DRAINAGE CANAL
9.41 Mi S of LA 29, St. Landry, LA
Built 1986 Load: 40.8 t ADT: 13,540
I0049
FairOver: BAYOU COCODRIE
9.0 MI NORTH OF LA 745, St. Landry, LA
Built 1987 Load: 40.8 t ADT: 19,693
US0090
FairOver: HANSON CANAL
3.6 MI EAST OF LA 3211, St. Mary, LA
Built 1980 Load: 40.8 t ADT: 11,104
US0090
FairOver: HANSON CANAL
1.64 MI W of LA 3215, St. Mary, LA
Built 1980 Load: 40.8 t ADT: 10,051
US0090
FairOver: HANSON CANAL
3.6 MI EAST OF LA 3211, St. Mary, LA
Built 1980 Load: 40.8 t ADT: 244
US0090/FRONTAGE RD
FairOver: HANSON CANAL
0.5 Mi SW of LA 182, St. Mary, LA
Built 1980 Load: 40.8 t ADT: 424
LA0435
FairOver: DOUBLE CREEK BRIDGE
3.7 M W OF LA 41, St. Tammany, LA
Built 1981 Load: 40.8 t ADT: 1,121
LA0016
FairOver: COON BRANCH
0.64M E ST HELENA PH LINE, Tangipahoa, LA
Built 1992 Load: 40.8 t ADT: 4,942
I0012
FairOver: NATALBANY RIVER
I0012, Tangipahoa, LA
Built 1970 Load: 40.8 t ADT: 37,140
I0012
FairOver: TANGIPAHOA RIVER RELIEF
I0012, Tangipahoa, LA
Built 1975 Load: 40.8 t ADT: 53,386
LA0002
FairOver: CANE CREEK
2.1 MI E of S JCT. LA 33, Union, LA
Built 1981 Load: 40.8 t ADT: 6,218
LA0550
FairOver: DELOUTRE BAYOU
3.1 MI E of LA 15, Union, LA
Built 1986 Load: 40.8 t ADT: 464
LA0438
FairOver: THOMAS CREEK
LA0438 LOG MILE 03.10, Washington, LA
Built 1981 Load: 40.8 t ADT: 1,353
LA0438
FairOver: MONROE CREEK
LA 438 LOG MILE 04.11, Washington, LA
Built 1981 Load: 40.8 t ADT: 1,518
LA0531
FairOver: COOLEY BRANCH
2.8 MI NORTH OF I-20, Webster, LA
Built 1980 Load: 40.8 t ADT: 1,689
I0020
FairOver: L & A RR
0.12M EAST OF LA 159, Webster, LA
Built 1960 Load: 40.8 t ADT: 15,642
LA0587
FairOver: BAYOU
3.7 MI WEST OF LA 878, West Carroll, LA
Built 1985 Load: 40.8 t ADT: 565
LA0588
FairOver: BIG COLEWA CREEK
1.1 MI EAST OF LA 585, West Carroll, LA
Built 1983 Load: 40.8 t ADT: 325
US0061
FairOver: RELIEF BRIDGE, US 61
US 61, WEST FELICIANA, West Feliciana, LA
Built 1987 Load: 40.8 t ADT: 2,531
MOSSWOOD DR
FairOver: BAYOU D'INDE
0.5 MILES E OF LA 27, Calcasieu, LA
Built 2013 Load: 41.1 t ADT: 1,333
Barron Rd
FairOver: CLEAR CREEK
2.64 M. NE OF US 165, Grant, LA
Built 1997 Load: 41.1 t ADT: 60
GOLSON RD
FairOver: CHENIERE CREEK
0.057 MI SW of LA 144, Ouachita, LA
Built 1996 Load: 41.1 t ADT: 147
Richmond Rd
FairOver: SPRING CREEK
0.5 MI. E. OF MELDER RD., Rapides, LA
Built 1993 Load: 41.1 t ADT: 240
US0171
FairOver: KCS RR
0.45 MI. NORTH OF LA 483, Sabine, LA
Built 2003 Load: 41.1 t ADT: 3,585
Club Deluxe Rd
FairOver: CREEK
1 MI SW BUS 51 EXIT I-12, Tangipahoa, LA
Built 1984 Load: 41.1 t ADT: 18,305
Ridgel Rd
FairOver: PONCHATOULA CREEK
1.2MI SJCT LA442/RIDGE/RD, Tangipahoa, LA
Built 1997 Load: 41.1 t ADT: 234
LA0014
FairOver: BAYOU TIGRE
1. E Of LA 14B, Vermilion, LA
Built 1999 Load: 41.1 t ADT: 12,903
Hawk Rd
FairOver: Cole Gully
1 Mi. E Of La 98, Acadia, LA
Built 2006 Load: 41.5 t ADT: 96
I0010
FairOver: MAPLE FORK BAYOU
0.4 MI EAST OF LA 108, Calcasieu, LA
Built 2022 Load: 41.5 t ADT: 83,609
CORBINA ROAD
FairOver: DRAIN
0.8 MI N of E MCNEESE ST, Calcasieu, LA
Built 2011 Load: 41.5 t ADT: 1,525
ENTERPRISE BLVD
FairOver: SPRR/CITY STREETS
0.6 MI NORTH OF US 90B, Calcasieu, LA
Built 1975 Load: 41.5 t ADT: 5,396
Main St in Natchez
FairOver: BAYOU NATCHEZ
0.09 MILES WEST OF LA 1, Natchitoches, LA
Built 1984 Load: 41.5 t ADT: 732
HARRISON AVE
FairOver: CITY PARK LAGOON
0.4MI.W.OF WISNER BL, Orleans, LA
Built 1939 Load: 41.5 t
TONEY BAYOU RD
FairOver: TONEY BAYOU
1.0 MI SOUTH LA 34, Ouachita, LA
Built 1987 Load: 41.5 t ADT: 130
I0010
FairOver: DES CANNES RELIEF
3.8 MI EAST OF LA 97, Acadia, LA
Built 1992 Load: 41.7 t ADT: 24,065
I0010
FairOver: DES CANNES RELIEF
6.30 Mi W of LA 91, Acadia, LA
Built 1961 Load: 41.7 t ADT: 1,471
I0010
FairOver: BAYOU DES CANNES
4.1 MI EAST OF LA 97, Acadia, LA
Built 1961 Load: 41.7 t ADT: 36,670
LA0044
FairOver: CONWAY BAYOU
LA 44 @ I-10, Ascension, LA
Built 1974 Load: 41.7 t ADT: 13,914
LA0044
FairOver: CONWAY BAYOU
LA 44 @ I-10, Ascension, LA
Built 1978 Load: 41.7 t ADT: 13,542
I0210
FairOver: KIRKMAN STREET
2.4 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1975 Load: 41.7 t ADT: 30,723
I0010
FairOver: COONE GULLY
.5 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 41.7 t ADT: 86,969
I0010
FairOver: COONE GULLY
0.5 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 41.7 t ADT: 3,799
LA0027
FairOver: BIG CROSS CREEK
7.1 MI N of LA 82, Cameron, LA
Built 1999 Load: 41.7 t ADT: 1,226
LA0027
FairOver: LITTLE CROSS CREEK
9.6 MI N of LA 82, Cameron, LA
Built 1999 Load: 41.7 t ADT: 1,226
LA0027
FairOver: HOG ISLAND GULLY
12.78 MI. N OF INT LA82, Cameron, LA
Built 2000 Load: 41.7 t ADT: 1,226
LA0027
FairOver: LONG POINT BAYOU
14.24 MI. N OF INT LA82, Cameron, LA
Built 2000 Load: 41.7 t ADT: 1,226
LA0027
FairOver: KAYO BAYOU
14.5 MI N of LA82, Cameron, LA
Built 2000 Load: 41.7 t ADT: 1,226
LA0877
FairOver: BAYOU MACON
.71 MI WEST OF LA 577, East Carroll, LA
Built 1983 Load: 41.7 t ADT: 284
US0167
FairOver: LITTLE DUGDEMONA CREEK
0.6 MI. N. OF LA 542, Jackson, LA
Built 1976 Load: 41.7 t ADT: 13,811
US0165
FairOver: COCKERHAM CREEK
2.4 MI SOUTH OF US 84, LaSalle, LA
Built 1956 Load: 41.7 t ADT: 3,518
Showing 5,801-5,850 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 |