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
CRYSTAL OIL ROAD
GoodOver: TENSAS RIVER
CRYSTAL OIL RD/N OF LA888, Tensas, LA
Built 1996 Load: 44.5 t ADT: 100
LA0335
GoodOver: COULEE BATON
1.60 MI W. OF LA 35, Vermilion, LA
Built 2002 Load: 44.5 t ADT: 507
LA0113
GoodOver: BRUSHY CREEK
1.52 MI EAST OF LA 10, Vernon, LA
Built 1984 Load: 44.5 t ADT: 822
LA0127
GoodOver: BIG CREEK
1.87 M. NW CALDWELL LINE, Winn, LA
Built 2002 Load: 44.5 t ADT: 314
LA0127
GoodOver: FLAT CREEK
4.01 M. NW CALDWELL LINE, Winn, LA
Built 2002 Load: 44.5 t ADT: 291
LA0157
GoodOver: MARTIN CREEK
5.9 MI WEST OF US 371, Bossier, LA
Built 2013 Load: 44.7 t ADT: 1,325
WEST LINCOLN ROAD
GoodOver: CREEK
1.7 MI W OF LA 385, Calcasieu, LA
Built 2020 Load: 44.7 t ADT: 2,155
CLOVERLAND AVE.
GoodOver: DRAINAGE CANAL
0.2 M W OF US 61, East Baton Rouge, LA
Built 2019 Load: 44.7 t ADT: 2,250
Albert Dr
GoodOver: Drainage Bayou
.2 miles E. of Woodale Bl, East Baton Rouge, LA
Built 2017 Load: 44.7 t ADT: 598
E Flanacher Rd
GoodOver: DRAINAGE BAYOU
2.7 MI.E OF LA 61, East Baton Rouge, LA
Built 2017 Load: 44.7 t ADT: 994
LA0834
GoodOver: OVERFLOW CREEK
4.6 MI W OF US 167, Morehouse, LA
Built 2018 Load: 44.7 t ADT: 61
US0190
GoodOver: BAYOU
.50 OF A MILE EAST OF LA, St. Tammany, LA
Built 2013 Load: 44.7 t ADT: 12,700
US0190
GoodOver: BAYOU CHINCHUBA
.50 OF A MILE EAST OF LA, St. Tammany, LA
Built 2014 Load: 44.7 t ADT: 3,755
LA0500
GoodOver: KENNY CREEK
0.76 MI. EAST OF US 167, Winn, LA
Built 1998 Load: 44.7 t ADT: 220
DESHOTEL RD
GoodOver: CASTOR CREEK
1.1 MI E of Carrier Rd, Allen, LA
Built 2006 Load: 45.0 t ADT: 40
I0049
GoodOver: TWELVE MILE BAYOU
2.11 MI NORTH OF LA 1, Caddo, LA
Built 2013 Load: 45.0 t ADT: 42,454
I0049
GoodOver: TWELVE MILE BAYOU
2.11 MI N OF LA 1, Caddo, LA
Built 2013 Load: 45.0 t ADT: 6,846
LA0378-S
GoodOver: INDIAN BAYOU
0.2 MI N OF LA 378, Calcasieu, LA
Built 2019 Load: 45.0 t ADT: 4,182
Milldale Rd
GoodOver: BEAVER CREEK
4.5 MI. W OF LA 409, East Baton Rouge, LA
Built 2017 Load: 45.0 t ADT: 1,512
Port Hudson-Pride
GoodOver: Little Sandy Creek
1.0 miles east of LA 958, East Baton Rouge, LA
Built 2017 Load: 45.0 t ADT: 540
MIMMS RD
GoodOver: LEVEE BORROW PIT
0.1 OF A MILE WEST OF RAM, Iberville, LA
Built 2014 Load: 45.0 t ADT: 550
LA0045
GoodOver: GOOSE BAYOU
3.4 MI S OF LA 302, Jefferson, LA
Built 2019 Load: 45.0 t ADT: 6,709
Bellwood Church Rd
GoodOver: DRY CREEK
0.5 MILES WEST OF LA 117, Natchitoches, LA
Built 2007 Load: 45.0 t ADT: 100
Weaver Cemetary Rd
GoodOver: DEMERY CREEK
3.2 M. W. OF LA 9 NEAR CH, Natchitoches, LA
Built 2004 Load: 45.0 t ADT: 102
Red Nelson Rd
GoodOver: MCGEE BRANCH
0.2 M. E. OF LA 155, Natchitoches, LA
Built 2005 Load: 45.0 t ADT: 152
McManus Road
GoodOver: Cypress Creek
1.6 MI. S OF LA 183, Richland, LA
Built 2023 Load: 45.0 t ADT: 275
PIONEER RD
GoodOver: EDMONDSON CREEK
1.2 MI S OF LA 6, Sabine, LA
Built 2016 Load: 45.0 t ADT: 100
SHUTEYE RD
GoodOver: MILLER CREEK
0.3 MI. W OF MT. OLIVE RD, Sabine, LA
Built 2013 Load: 45.0 t ADT: 110
PLAINVIEW RD
GoodOver: GOODSON CREEK
4.54 MI. EAST OF US 171, Sabine, LA
Built 2002 Load: 45.0 t ADT: 320
WELDON RD
GoodOver: TORO CREEK
3.5 MI EAST OF FISHER, Sabine, LA
Built 2006 Load: 45.0 t ADT: 30
E Stephenville Rd
GoodOver: COULEE
2.4 Mi NE of La 70, St. Martin, LA
Built 1986 Load: 45.0 t ADT: 422
LADY OF LAKE RD
GoodOver: CYPRESS ISLAND COULEE
1.6 Mi. W of La 31, St. Martin, LA
Built 1985 Load: 45.0 t ADT: 1,029
HWY 41 Spur
GoodOver: Gum Creek
1.06 Mi. E. of LA 41, St. Tammany, LA
Built 2021 Load: 45.0 t ADT: 1,325
Bankston Rd
GoodOver: LITTLE NATALBANY BRIDGE
2MI S/W OF LA 16 & US51, Tangipahoa, LA
Built 1999 Load: 45.0 t ADT: 551
SECTION LINE RD
GoodOver: CASTOR BAYOU
0.8 MI E OF LA 1211, Vernon, LA
Built 2021 Load: 45.0 t ADT: 1,350
BOUNDARY RD
GoodOver: LITTLE BRUSHY CREEK
3.0 MI. EAST OF LA 399, Vernon, LA
Built 2013 Load: 45.0 t ADT: 75
US0167
GoodOver: CREOSOTE BRANCH
8.99 MI. NORTH OF LA 500, Winn, LA
Built 2006 Load: 45.0 t ADT: 15,576
LA3068
GoodOver: BAYOU BARWICK
1 MI E OF LA 97, Acadia, LA
Built 1999 Load: 45.4 t ADT: 341
I0010
GoodOver: DRAINAGE CANAL
0.3 M SE of I-10&LA 941, Ascension, LA
Built 1979 Load: 45.4 t ADT: 25,735
LA0943
GoodOver: BAYOU LAFOURCHE
0.01 Mi. E of LA 1, Ascension, LA
Built 1982 Load: 45.4 t ADT: 350
LA0106
GoodOver: DIVERSION CANAL
1.01 MI EAST OF LA 29, Avoyelles, LA
Built 1986 Load: 45.4 t ADT: 2,331
Doughty Rd
GoodOver: Louis Bayou
2.42 M S of LA 922, Catahoula, LA
Built 1997 Load: 45.4 t ADT: 90
LA0175
GoodOver: BAYOU NA BONCHASSE
.43 M. S of LA 3015, De Soto, LA
Built 2000 Load: 45.4 t ADT: 4,470
LA0175
GoodOver: BAYOU NA BONCHASSE RELIE
.27 M. S of La 3015, De Soto, LA
Built 2000 Load: 45.4 t ADT: 4,470
I0110
GoodOver: CANAL
0.3 M N of US 61, East Baton Rouge, LA
Built 1976 Load: 45.4 t ADT: 32,092
LA0577
GoodOver: BAYOU MACON
1.9 MIEAST OF LA 17, Franklin, LA
Built 1995 Load: 45.4 t ADT: 914
I0010
GoodOver: TRANSCONTINENTAL BLVD.
3.0 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 45.4 t ADT: 41,695
LA0500
GoodOver: FUNNY LOUIS BAYOU
1.45 MI WEST OF US 84, LaSalle, LA
Built 1977 Load: 45.4 t ADT: 1,008
I-10
GoodOver: Drain Canal
3.5 Mi. East of I-510, Orleans, LA
Built 2022 Load: 45.4 t ADT: 77,962
I-10
GoodOver: Dranage Canal
5.2 Mi. East of I-510, Orleans, LA
Built 2022 Load: 45.4 t ADT: 77,962
Showing 10,651-10,700 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 |