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
LA0002
FairOver: OUACHITA STERLINGTON
.68 MILES NORTH OF CALDWE, Ouachita, LA
Built 2009 Load: 29.8 t ADT: 6,258
WASHINGTON ST
FairOver: DRAINAGE CANAL
WASHINGTON ST. MONRO, Ouachita, LA
Built 1971 Load: 29.8 t ADT: 2,000
PATRICIA ST
FairOver: EICKES CANAL
0.3 MI N OF LA 39, St. Bernard, LA
Built 2000 Load: 29.8 t ADT: 1,419
I0049
FairOver: BAYOU CALLAHAN
0.8 MI NORTH OF LA 3233, St. Landry, LA
Built 1962 Load: 29.8 t ADT: 44,243
US0090
FairOver: SWAMP
.1 MI.FROM LA.20, Terrebonne, LA
Built 1995 Load: 29.8 t ADT: 2,629
FDR 831
FairOver: CYPRESS CREEK
1.6 MI. EAST LA. 159, Webster, LA
Built 1972 Load: 29.8 t ADT: 30
I0020
FairOver: ICG RR
.5 MI EAST OVER LA 72, Bossier, LA
Built 1967 Load: 29.9 t ADT: 71,593
US0071
FairOver: TWELVE MILE BAYOU
.1 MI NORTH OF LA 173, Caddo, LA
Built 1990 Load: 29.9 t ADT: 22,553
LA0133
FairOver: BAYOU LAFOURCHE
2.6 MI NORTH OF LA 4, Caldwell, LA
Built 1949 Load: 29.9 t ADT: 1,415
LA0064
FairOver: COMITE RIVER
LA0064, East Baton Rouge, LA
Built 1978 Load: 29.9 t ADT: 16,768
LA0548
FairOver: LITTLE GLADE CR
4.69 MI EAST OF LA 34, Jackson, LA
Built 1949 Load: 29.9 t ADT: 280
LA0548
FairOver: CREEK
5.17MI EAST OF LA 34, Jackson, LA
Built 1949 Load: 29.9 t ADT: 280
LA0548
FairOver: CUB CREEK
7.12 MI EAST OF LA 34, Jackson, LA
Built 1949 Load: 29.9 t ADT: 280
LA0099
FairOver: BAYOU CHENE
3.8 MI N of LA 380, Jefferson Davis, LA
Built 1979 Load: 29.9 t ADT: 456
US0190
FairOver: COYELL CREEK
1.0 M W OF LA 63, Livingston, LA
Built 1953 Load: 29.9 t ADT: 7,215
I0010
FairOver: CARROLTON AVE
1.98 MI EAST OF I-610, Orleans, LA
Built 1961 Load: 29.9 t ADT: 29,280
LA3280
FairOver: OUACHITA RIVER
LA 3280 OVER OUACHITA RIV, Ouachita, LA
Built 2003 Load: 29.9 t ADT: 8,312
LA0023
FairOver: DOULLUT CANAL
46.9 MI SOUTH OF LA 406, Plaquemines, LA
Built 1975 Load: 29.9 t ADT: 5,170
US0090
FairOver: B DESALLEMANDS
.4 MI WEST OF LA 362, St. Charles, LA
Built 1961 Load: 29.9 t ADT: 20,956
US0090
FairOver: B DESALLEMANDS
.4 MI WEST OF LA 362, St. Charles, LA
Built 1961 Load: 29.9 t ADT: 17,200
US0090
FairOver: DRAIN CANAL
4.3 MI EAST OF LA 633, St. Charles, LA
Built 1940 Load: 29.9 t ADT: 25,051
LA0094
FairOver: VERMILION RIVER
1.0 MI E OF LA 353, St. Martin, LA
Built 1954 Load: 29.9 t ADT: 18,293
I0059
FairOver: MIDDLE SLOUGH
I0059, St. Tammany, LA
Built 1962 Load: 29.9 t ADT: 33,925
I0059
FairOver: RONES BAYOU
I0059, St. Tammany, LA
Built 1962 Load: 29.9 t ADT: 33,925
W Robert Wilson Rd
FairOver: DRAINAGE BAYOU
0.26 MILES NORTH OF LA.30, Ascension, LA
Built 2016 Load: 30.1 t ADT: 120
Patty Jo Ln
FairOver: BLACK BAYOU
0.1 MI SE OF ASCEN. 929, Ascension, LA
Built 1965 Load: 30.1 t ADT: 20
SOUTH LAKESHORE DR
FairOver: TRIB. TO CROSS LAKE
5.5 MI E OF LA 169, Caddo, LA
Built 1982 Load: 30.1 t ADT: 475
WEST LYONS ST
FairOver: CANAL
0.3 MI NORTH OF US 90, Calcasieu, LA
Built 2009 Load: 30.1 t ADT: 200
MANCHESTER RD
FairOver: FARMERS L & C CO. CANAL
3.1 MI N of LA 14, Calcasieu, LA
Built 1983 Load: 30.1 t ADT: 276
WEST PARISH RD
FairOver: CANAL
0.7 MI WEST OF LA 1256, Calcasieu, LA
Built 1980 Load: 30.1 t ADT: 340
EDGERLY RD
FairOver: HOUSTON RIVER
6.2 MI. N. OF US 90, Calcasieu, LA
Built 1982 Load: 30.1 t ADT: 583
Central Throughway
FairOver: BEAVER BAYOU
2.0 MI. N. OF US190, East Baton Rouge, LA
Built 2011 Load: 30.1 t ADT: 10,400
Captain Ryan Dr
FairOver: Monte Sano Bayou
0.2 MI E Veterans BLVD, East Baton Rouge, LA
Built 2000 Load: 30.1 t ADT: 1,314
Port Hudson Cem Rd
FairOver: COOPER BAYOU REF
0.3 M W of US 61, East Baton Rouge, LA
Built 1968 Load: 30.1 t ADT: 2,200
JESSE STONE RD
FairOver: DRAIN CANAL @ SOUTHERN U
RD ON SOUTHERN UNIV CAMPU, East Baton Rouge, LA
Built 1996 Load: 30.1 t ADT: 3,691
LA0952
FairOver: TRIBUTARY OF REDWOOD CK.
0.3 Mi W of LA 68, East Feliciana, LA
Built 1980 Load: 30.1 t ADT: 1,341
McArthur Dr
FairOver: BAYOU JOE MARCEL
00.25 MI NORTH OF LA 10, Evangeline, LA
Built 1977 Load: 30.1 t ADT: 340
LA0577
FairOver: TURKEY CREEK
03.69 MI FROM JUNCTION 57, Franklin, LA
Built 2014 Load: 30.1 t ADT: 977
LA0618
FairOver: PINE FLAT SLOUGH
3.09 MILES FROM JUNCT. LA, Franklin, LA
Built 2008 Load: 30.1 t ADT: 1,271
LA0076
FairOver: BAYOU GROSSE TETE
LA0076, Iberville, LA
Built 1973 Load: 30.1 t ADT: 7,562
US0090-B
FairOver: OFF RAMP TO STUMPF BLVD.
0.8 MI WEST OF LA 23, Jefferson, LA
Built 1987 Load: 30.1 t ADT: 15,955
US0090-B
FairOver: ON RAMP ST-4
.1 MI WEST OF LA 23, Jefferson, LA
Built 1985 Load: 30.1 t ADT: 15,955
US0090-B
FairOver: ON RAMP TO US 90 BUS WB
0.6 MI EAST OF LA 45, Jefferson, LA
Built 1992 Load: 30.1 t ADT: 15,955
FAIRFIELD AVE
FairOver: WEYRAUCH CANAL
0.8 MI W OF LAPALCO BLVD., Jefferson, LA
Built 2002 Load: 30.1 t
FARM SUPPLY ROAD
FairOver: DITCH
3.9 M N of I-10, Jefferson Davis, LA
Built 1984 Load: 30.1 t ADT: 200
E. Milton Ave.
FairOver: ANSEIM COULEE
0.01 MI EAST OF LA 339, Lafayette, LA
Built 1973 Load: 30.1 t ADT: 8,700
E. Milton Ave.
FairOver: ANSELM COULEE
0.55 MI EAST OF LA 339, Lafayette, LA
Built 1973 Load: 30.1 t ADT: 8,700
Iberia St
FairOver: BAYOU PARC PERDU
0.5 Mi W of Lafayette St, Lafayette, LA
Built 1973 Load: 30.1 t ADT: 6,620
LA0493
FairOver: BAYOU BREVILLE
1.48 MI. E OF INT LA1, Natchitoches, LA
Built 1949 Load: 30.1 t ADT: 294
LA0616
FairOver: South Tupawek Bayou
1.2 Mi W. of LA 143, Ouachita, LA
Built 2019 Load: 30.1 t ADT: 10,181
Showing 3,451-3,500 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 |