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
LA0478
GoodOver: SAND CREEK
0.83 MILES EAST OF LA 120, Natchitoches, LA
Built 1996 Load: 49.0 t ADT: 172
I0049
GoodOver: LENA-FLATWOODS RD.
4.68 MI. NORTH OF LA 8, Rapides, LA
Built 1987 Load: 49.0 t ADT: 14,042
LA0021
GoodOver: DRAIN
2.2 M N OF LA 10, Washington, LA
Built 1965 Load: 49.0 t ADT: 6,741
SWAN LAKE RD.(S)
GoodOver: FLAT RIVER
2.2 MI E OF US 71, Bossier, LA
Built 2020 Load: 49.2 t ADT: 10
Sauve Road
GoodOver: Soniat Canal
0.5 Mi. S. f US 61, Jefferson, LA
Built 2021 Load: 49.2 t ADT: 10,700
North Rd
GoodOver: DRAINAGE CANAL
1.7 Mi N of La 14, Vermilion, LA
Built 1966 Load: 49.2 t ADT: 2,043
PLAINVIEW COMM RD
GoodOver: BIG BRANCH CREEK
1.7 MILES NE OF LA 392, Vernon, LA
Built 2016 Load: 49.2 t
LA0111
GoodOver: UNNAMED BRANCH
4.17 MI EAST JCT US 171, Vernon, LA
Built 1997 Load: 49.2 t ADT: 937
LA0404
GoodOver: BAYOU CHOCTAW
0.4 MI E OF LA 75, Iberville, LA
Built 2019 Load: 49.6 t ADT: 551
Eraste Landry Rd.
GoodOver: SUNBEAM COULEE
0.10 Mi W of LA 3184, Lafayette, LA
Built 2011 Load: 49.6 t ADT: 4,092
North Giles St
GoodOver: LITTLE CROOKED CREEK
0.77 MI EAST OF US 371, Webster, LA
Built 2011 Load: 49.6 t ADT: 650
US 61
GoodOver: Bayou Manchac
0.80 Mi. N. of LA 427, East Baton Rouge, LA
Built 2021 Load: 49.9 t ADT: 48,026
US 61
GoodOver: Bayou Manchac
1.46 Mi S of la 948, East Baton Rouge, LA
Built 2021 Load: 49.9 t ADT: 29,303
Andre Street
GoodOver: Gaston Coulee
.25 MI E of N Church St, Lafayette, LA
Built 2019 Load: 49.9 t ADT: 75
Guilde Road
GoodOver: Riley Creek
0.1 Mi S of Tarpley Rd., LaSalle, LA
Built 2018 Load: 49.9 t ADT: 119
I0010
GoodOver: ON RAMP I-10E.FROM US90
.1 MI EAST OF US 90, Orleans, LA
Built 1967 Load: 49.9 t ADT: 7,620
I0049
GoodOver: DRAINAGE DITCH
SOUTH I-49 / US 71 INTG., Rapides, LA
Built 1992 Load: 49.9 t ADT: 15,642
I0055
GoodOver: ICG RAILROAD
I0055, Tangipahoa, LA
Built 1968 Load: 49.9 t ADT: 21,736
N. Bayou Black Rd
GoodOver: Hanson Canal
0.1 MI NW OF LA 182, Terrebonne, LA
Built 2021 Load: 49.9 t ADT: 9,159
US0080
GoodOver: KCS RAILROAD
1.16 MI WEST OF US 371, Webster, LA
Built 2005 Load: 49.9 t ADT: 4,052
I0010
GoodOver: BRIDGE 290 EBL
4.85 M W of LA 415&I-10, West Baton Rouge, LA
Built 1973 Load: 49.9 t ADT: 80,618
E WASHINGTON ST
GoodOver: TRIBUTARY TO BAYOU PIERR
0.05 MI WEST OF LA 1, Caddo, LA
Built 1986 Load: 50.2 t ADT: 100
Hatfield--Projects
GoodOver: ASH SLOUGH
LOGMI 0.04 FR 001 TO ODE, Franklin, LA
Built 1994 Load: 50.2 t ADT: 2,000
LA3194
GoodOver: MCCAIN CREEK
2.7 MI. E OF LA 173, Caddo, LA
Built 2003 Load: 50.5 t ADT: 10,018
US0061
GoodOver: BAKER CANAL
500 FEET SOUTH OF LA.964, East Baton Rouge, LA
Built 2016 Load: 50.5 t ADT: 9,721
LA0147
GoodOver: DUDGEMONA RELIEF
1.43 MI WEST OF US 167, Jackson, LA
Built 2003 Load: 50.5 t ADT: 3,480
FARMERVILLE ST
GoodOver: KANSAS CITY SOUTHERN
IN RUSTON FARMERVILLE ST., Lincoln, LA
Built 1987 Load: 50.5 t ADT: 700
I0010
GoodOver: GROUND
0.07 MILE SOUTH OF US 11, Orleans, LA
Built 2011 Load: 50.5 t ADT: 1,600
I0110
GoodOver: KELVIN ST.
I-110 / HOLLYWOOD ST. INT, East Baton Rouge, LA
Built 1971 Load: 50.8 t ADT: 8,250
I0020
GoodOver: I20;RAMP 2
.8 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 50.8 t ADT: 15,642
LA0001
GoodOver: MP RR
3.53 MI. N OF N JCT LA 8, Rapides, LA
Built 1994 Load: 50.8 t ADT: 748
Grand Lakes Dr
GoodOver: BAYOU FOUNTAIN
.01 MI SW-HIGHLAND ROAD, East Baton Rouge, LA
Built 1999 Load: 50.9 t ADT: 1,562
Mermentau Rd.
GoodOver: ANSELM COULEE
1.0 MI. S. OF LA 92, Lafayette, LA
Built 2013 Load: 50.9 t ADT: 119
Pate Rd
GoodOver: Selsers Creek
0.1 South of La 1067, Tangipahoa, LA
Built 2022 Load: 50.9 t ADT: 20
LA0010
GoodOver: Beaver Branch
1.70 Mi. East of LA 37, St. Helena, LA
Built 2017 Load: 51.2 t ADT: 1,514
Rodeo Rd
GoodOver: CREEK
0.2 MI W OF LA 133, Caldwell, LA
Built 1986 Load: 51.5 t ADT: 480
LA0028
GoodOver: DRAIN
0.97 MI. WEST OF LA 3054, Rapides, LA
Built 1997 Load: 51.5 t ADT: 9,482
Sub Regional Parkw
GoodOver: Drainage Creek
1.42 MI E of LA 467, Vernon, LA
Built 2021 Load: 51.5 t ADT: 200
I0110
GoodOver: CANAL
0.3 M N of US 61, East Baton Rouge, LA
Built 1976 Load: 51.7 t ADT: 8,250
I0110
GoodOver: CANAL
0.3 M N of I-110&US 61, East Baton Rouge, LA
Built 1976 Load: 51.7 t ADT: 16,229
Comite Dr
GoodOver: COMITE RIVER
1.8 M S of LA 410&LA 408, East Baton Rouge, LA
Built 2006 Load: 51.7 t
I0049
GoodOver: HYNSON BAYOU
2.23 MI. NORTH OF LA 3250, Rapides, LA
Built 1990 Load: 51.7 t ADT: 15,642
Bayou Crab Rd
GoodOver: Norman Canal
0.8 Mi. E. of LA 401, Assumption, LA
Built 2022 Load: 51.8 t ADT: 316
LA0157
GoodOver: FOX SKIN BAYOU
1.5 MI N. ON LA 527, Bossier, LA
Built 2015 Load: 51.8 t ADT: 1,211
WAGGONER AVE
GoodOver: BRUSH BAYOU
0.1 MI WEST OF US 171, Caddo, LA
Built 1990 Load: 51.8 t ADT: 652
LA3201
GoodOver: TURKEY CREEK
01.26 MILES EAST OF LA.4, Franklin, LA
Built 2015 Load: 51.8 t ADT: 3,772
I-10 Service Rd
GoodOver: Reine Canal
0.50 Mi. N. of US 190, St. Tammany, LA
Built 2021 Load: 51.8 t ADT: 900
LA0443
GoodOver: Tangipahoa River
1.0 MI. NE of LA. 1064, Tangipahoa, LA
Built 2017 Load: 51.8 t ADT: 6,478
Sub Regional Parkw
GoodOver: Drainage Creek
1.42 MI E of LA 467, Vernon, LA
Built 2021 Load: 51.8 t ADT: 200
Sub Regional Parkw
GoodOver: Liberty Creek
0.1 Mi S of LA 468, Vernon, LA
Built 2021 Load: 51.8 t ADT: 200
Showing 10,951-11,000 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 |