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
LA0073
GoodOver: N B WARDS CREEK
LA0073, East Baton Rouge, LA
Built 1956 Load: 20.9 t ADT: 22,611
LA0064
GoodOver: HUB BAYOU
4.0 M SE of LA 64&LA 67, East Baton Rouge, LA
Built 1957 Load: 20.9 t ADT: 6,046
LA0959
GoodOver: MILL CREEK
0.6 M E of LA 959&LA 409, East Feliciana, LA
Built 1960 Load: 20.9 t ADT: 1,679
LA0127
GoodOver: LITTLE CHICKASAW
6.2 MI NORTH OF LA 503, LaSalle, LA
Built 1950 Load: 20.9 t ADT: 3,888
LA0459
GoodOver: GREENS CREEK
3.9 MI NORTH OS US 84, LaSalle, LA
Built 1958 Load: 20.9 t ADT: 1,160
FRANCE ST
GoodOver: FLORIDA AVE.
1.5 MI.S OF US.I.10, Orleans, LA
Built 1960 Load: 20.9 t
LA0120
GoodOver: BAYOU SCIE
6.54 MI. EAST OF US 171, Sabine, LA
Built 1959 Load: 20.9 t ADT: 235
LA0441
GoodOver: BELL BRANCH
0.8 M N OF LA 1046, St. Helena, LA
Built 1957 Load: 20.9 t ADT: 584
LA0040
GoodOver: MILLS CREEK
LA0040, St. Tammany, LA
Built 1956 Load: 20.9 t ADT: 885
LA0040
GoodOver: SIMMONS CREEK
LA0040, St. Tammany, LA
Built 1956 Load: 20.9 t ADT: 885
LA1064
GoodOver: MORAN BRANCH
LA1064, Tangipahoa, LA
Built 1957 Load: 20.9 t ADT: 2,854
LA1064
GoodOver: WEST CANAL
LA 1064, Tangipahoa, LA
Built 1957 Load: 20.9 t ADT: 2,854
LA1064
GoodOver: PONCHATOULA CREEK
LA1064, Tangipahoa, LA
Built 1957 Load: 20.9 t ADT: 2,854
LA0182
GoodOver: ELLIOT JONES CANAL
7.07 MI EAST OF LA 20, Terrebonne, LA
Built 1952 Load: 20.9 t ADT: 3,687
LA0182
GoodOver: DRAIN CANAL
4.4 MI WEST OF LA 315, Terrebonne, LA
Built 1952 Load: 20.9 t ADT: 3,687
G. Simon Rd
GoodOver: QUE DE TORTUE
0.3 Mi N of Gib Rd, Vermilion, LA
Built 2014 Load: 20.9 t ADT: 112
LA0450
GoodOver: SNELL BRANCH
LA0450, Washington, LA
Built 1957 Load: 20.9 t ADT: 319
LA0368
GoodOver: IRRIGATION CANAL
3.8 MI EAST OF LA 91, Acadia, LA
Built 1954 Load: 21.1 t ADT: 598
COLUMBIA STREET
GoodOver: GILBERT DITCH
0.1 MI E OF LINE AVENUE, Caddo, LA
Built 1998 Load: 21.1 t
Haygood Rd
GoodOver: HAYGOOD RD, COTTONWOOD B
.2 MI N OF LA 173, Caddo, LA
Built 1992 Load: 21.1 t ADT: 57
Rains School Rd
GoodOver: TRIBUTARY TO BLACK BAYOU
0.75 MI. SOUTH OF LA 170, Caddo, LA
Built 1999 Load: 21.1 t ADT: 38
Mailbox Rd
GoodOver: TRIB TO BLACK BAYOU
1.8 MI. NORTH OF LA 170, Caddo, LA
Built 2002 Load: 21.1 t ADT: 38
Hosston Rodessa Rd
GoodOver: BLACK BAYOU TRIB
0.25 MI WEST OF US HWY 72, Caddo, LA
Built 1989 Load: 21.1 t ADT: 59
United Gas Rd No 1
GoodOver: BLACK BAYOU TRIB
0.2M SOUTH OF LA 168, Caddo, LA
Built 1992 Load: 21.1 t ADT: 38
GARRIE CUT-OFF
GoodOver: GUM SLOUGH
0.8 MI EAST OF LA 109, Calcasieu, LA
Built 1986 Load: 21.1 t ADT: 482
Pride-Baywood Rd
GoodOver: HANNA CREEK
3.9 MI. E. OF LA409, East Baton Rouge, LA
Built 1967 Load: 21.1 t ADT: 1,118
NICOLLE BLVD
GoodOver: KELLY CANAL
1.1 MI S OF US 90, Jefferson, LA
Built 1987 Load: 21.1 t ADT: 750
W. St. Mary Blvd.
GoodOver: COULEE
0.40 MI W of US 167, Lafayette, LA
Built 1968 Load: 21.1 t ADT: 2,400
Louisiana Ave.
GoodOver: WEBB COULEE
0.2 MI N OF LA 94, Lafayette, LA
Built 1966 Load: 21.1 t ADT: 8,600
FORSYTHE ROAD
GoodOver: CROOKED CREEK
2.8 MI E OF US 167, Lincoln, LA
Built 2017 Load: 21.1 t ADT: 66
Dwyer BLVD
GoodOver: CANAL
0.6MI.W.OF ALCEE FOR, Orleans, LA
Built 1960 Load: 21.1 t
Herman Dupuis Rd.
GoodOver: COULEE
1.6 Mi SW of LA 3177, St. Martin, LA
Built 1986 Load: 21.1 t ADT: 442
Cooper Rd
GoodOver: DUMMY BRANCH
1.2 MI N JCT LA 1074&1075, Washington, LA
Built 2001 Load: 21.1 t ADT: 311
Roddy Rd
GoodOver: BERT ALLEN DITCH
0.3 MILES NORTH OF JCT LA, Ascension, LA
Built 2009 Load: 21.4 t ADT: 1,200
West Lakeshore Dr
GoodOver: TRIBUTARY TO CROSS LAKE
0.3 MI W OF N LAKESHORE, Caddo, LA
Built 2001 Load: 21.4 t ADT: 38
Hosston Rodessa Rd
GoodOver: TRIBUTARY TO BIG BRANCH
3.25 MI W. OF HWY. 71, Caddo, LA
Built 1987 Load: 21.4 t ADT: 40
N SHATTUCK ST
GoodOver: SP R/R-CITY STS
0.7 MI N OF US 90 BUS, Calcasieu, LA
Built 1991 Load: 21.4 t ADT: 4,606
LA0010
GoodOver: COMITE RIVER
1.67 MILES W OF JCT LA 67, East Feliciana, LA
Built 2005 Load: 21.4 t ADT: 3,904
MAGNOLIA LOOP
GoodOver: ROUTH CREEK
0.9 MI SE OF LA 776, LaSalle, LA
Built 2005 Load: 21.4 t ADT: 73
Atkins Rd.
GoodOver: Joes Bayou
1.7 Mi. NW of LA 577, Madison, LA
Built 2022 Load: 21.4 t ADT: 23
WESTSIDE BLVD
GoodOver: TERREBONNE BAYOU
0.1 MI. E. OF LA 24, Terrebonne, LA
Built 1974 Load: 21.4 t ADT: 5,322
US0090
GoodOver: BAYOU TERREBONNE
.2 MI EAST OF LA 24, Terrebonne, LA
Built 1980 Load: 21.4 t ADT: 2,280
Waterplant Rd
GoodOver: DEVIL SWAMP CANAL
03.15 MI FROM LA 24, Terrebonne, LA
Built 1986 Load: 21.4 t ADT: 1,958
RUDOLPH DAVIS RD
GoodOver: UNNAMED CR
0.4 MI E OF LA SLIGO RD, West Feliciana, LA
Built 2023 Load: 21.5 t ADT: 20
TROY SPEARS RD
GoodOver: SPRING CREEK
.2 Mi. S. of LA 1054, Tangipahoa, LA
Built 2019 Load: 21.6 t ADT: 88
WOODSIDE RD
GoodOver: TURNER BAYOU
2.05 MI W OF LA 105, Avoyelles, LA
Built 2018 Load: 21.7 t ADT: 86
George Hunt Rd
GoodOver: TRIB TO B NA BONCHASSE
1.78 MI SOUTH OF LA 3015, De Soto, LA
Built 2011 Load: 21.7 t ADT: 130
OAKPOINT RD
GoodOver: BAYOU POINTE AU CHENE
0.01 M WEST OF LA 665, Lafourche, LA
Built 1989 Load: 21.7 t ADT: 497
LA0008
GoodOver: LITTLE RIVER
8.0 MI SOUTH OF LA 774, LaSalle, LA
Built 1981 Load: 21.7 t ADT: 1,590
LA1216
GoodOver: DITCH
3.8 MI EAST OF US 171, Sabine, LA
Built 1966 Load: 21.7 t ADT: 209
Showing 6,901-6,950 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 |