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
LA0191
FairOver: BAYOU SCIE
0.11 MI. NORTH OF LA 475, Sabine, LA
Built 1982 Load: 37.2 t ADT: 1,210
LA0191
FairOver: BAYOU SAN PATRICIO
.5 MI NORTH OF LA 1218, Sabine, LA
Built 1980 Load: 37.2 t ADT: 904
LA0010
FairOver: DARLINGTON CREEK
LA0010, St. Helena, LA
Built 1981 Load: 37.2 t ADT: 1,732
LA0010
FairOver: TICKFAW RIVER
1.9 MI. EAST OF LA 37, St. Helena, LA
Built 1975 Load: 37.2 t ADT: 1,514
LA0037
FairOver: AMITE RIVER-GRANGEVILLE
0.4 M SW OF LA 63, St. Helena, LA
Built 1981 Load: 37.2 t ADT: 3,362
LA0037
FairOver: DRAIN
0.1 M N OF LA 63, St. Helena, LA
Built 1983 Load: 37.2 t ADT: 1,241
LA0043
FairOver: DAYS CHURCH BRANCH
0.4 M S OF LA 38, St. Helena, LA
Built 1977 Load: 37.2 t ADT: 1,153
LA0016
FairOver: DUTCHMAN CREEK
0.5 M E OF LA 1041, St. Helena, LA
Built 1976 Load: 37.2 t ADT: 4,299
LA0016
FairOver: COFFMAN CREEK
4.0 M W OF LA 441, St. Helena, LA
Built 1976 Load: 37.2 t ADT: 4,299
LA0016
FairOver: DRAIN
3.2 M W OF LA 441, St. Helena, LA
Built 1976 Load: 37.2 t ADT: 4,299
I0049
FairOver: BAYOU CALLAHAN
0.8 MI NORTH OF LA 3233, St. Landry, LA
Built 1962 Load: 37.2 t ADT: 25,609
LA0757
FairOver: BAYOU DESCANNES
4.3 MI E of LA 3277, St. Landry, LA
Built 1999 Load: 37.2 t ADT: 3,491
I0010
FairOver: WEST ATCHAFALAYA FLDWAY
4.49 Mi E of LA 347, St. Martin, LA
Built 1991 Load: 37.2 t ADT: 23,521
LA0040
FairOver: CANAL
1.1 M W OF I-55, Tangipahoa, LA
Built 1971 Load: 37.2 t ADT: 913
LA0040
FairOver: SWEETWATER CREEK
2.8 M W OF LA 1062, Tangipahoa, LA
Built 1970 Load: 37.2 t ADT: 4,748
LA0661
FairOver: BAYOU TERREBONNE
0.05 MI NORTH OF LA 24, Terrebonne, LA
Built 1999 Load: 37.2 t ADT: 5,780
LA0708
FairOver: SLEDGE CANAL
2.58 MI W. OF LA 35, Vermilion, LA
Built 1975 Load: 37.2 t ADT: 353
LA0008
FairOver: BAYOU-ANACOCO
3.1 MI EAST OF LA 464, Vernon, LA
Built 1977 Load: 37.2 t ADT: 4,071
LA0465
FairOver: CREEK
3.67 MI EAST OF LA 117, Vernon, LA
Built 1978 Load: 37.2 t ADT: 115
LA0465
FairOver: RELIEF
5.70 MI EAST OF LA 117, Vernon, LA
Built 1980 Load: 37.2 t ADT: 115
LA0465
FairOver: BUCK BRANCH
6.68 MI EAST OF LA 117, Vernon, LA
Built 1980 Load: 37.2 t ADT: 115
LA0028
FairOver: CALCASIEU RIVER
8.6 MI EAST OF LA 121, Vernon, LA
Built 1975 Load: 37.2 t ADT: 6,307
LA0164
FairOver: DORCHEAT BAYOU RELIEF
1.54 MI E OF US 371, Webster, LA
Built 1982 Load: 37.2 t ADT: 3,472
I0020
FairOver: KCS R/R
0.12M EAST OF LA 159, Webster, LA
Built 1960 Load: 37.2 t ADT: 32,869
LA0472
FairOver: DRY CREEK RELIEF
6.74 MI NORTH OF LA 1230, Winn, LA
Built 1974 Load: 37.2 t ADT: 332
LA0042
FairOver: AMITE RIVER RELIEF
0.7 Mi. E of LA 933, Ascension, LA
Built 2011 Load: 37.3 t ADT: 8,186
I0010
FairOver: DRAINAGE CANAL
1.9 Mi W of LA 22, Ascension, LA
Built 1979 Load: 37.3 t ADT: 25,735
LA0511
FairOver: SAND BEACH BAYOU
1.2 MI EAST OF LA 523, Caddo, LA
Built 1936 Load: 37.3 t ADT: 27,829
LA0012
FairOver: MORMAN SLOUGH
3.4 MI W of LA 109, Calcasieu, LA
Built 2012 Load: 37.3 t ADT: 3,365
LA0012
FairOver: LONG SLOUGH
3.5 MI W of LA 109, Calcasieu, LA
Built 2013 Load: 37.3 t ADT: 3,365
E DAVE DUGAS RD
FairOver: CANAL
0.5 MI E of LA 27, Calcasieu, LA
Built 2014 Load: 37.3 t ADT: 2,232
LA0010
FairOver: COMITE RIVER RELIEF
1.77 MILES W OF JCT LA 67, East Feliciana, LA
Built 2005 Load: 37.3 t ADT: 3,904
LA0010
FairOver: COMITE RIVER RELIEF #1
1.5 MILES W OF JCT LA 67, East Feliciana, LA
Built 2005 Load: 37.3 t ADT: 3,904
LA0010
FairOver: COMITE RIVER RELIEF #2
1.19 MI WEST JCT LA 67, East Feliciana, LA
Built 2005 Load: 37.3 t ADT: 3,904
Morrison Rd
FairOver: DRAINAGE CANAL
.7 MI SE OF LA 47, Orleans, LA
Built 1975 Load: 37.3 t
US0190
FairOver: YELLOW WATER RIVER
US0190, Tangipahoa, LA
Built 1969 Load: 37.3 t ADT: 18,261
Duckworth Rd
FairOver: LITTLE CREEK
0.7 MI. N OF LA 134, West Carroll, LA
Built 1989 Load: 37.3 t ADT: 280
LORRAINE ROAD
FairOver: LACASSINE BAYOU
2.0 MI EAST OF LA 101, Calcasieu, LA
Built 2004 Load: 37.5 t ADT: 20
FAUL ROAD
FairOver: CREEK
1.78 MI N I-10 N SER RD, Jefferson Davis, LA
Built 2019 Load: 37.5 t ADT: 32
Oliver Rd
FairOver: CAMERON CANAL
3.2 Mi W of La 332, Vermilion, LA
Built 2015 Load: 37.5 t ADT: 28
Ozark Rd.
FairOver: Coulee
0.4 Mi. West of La 95, Acadia, LA
Built 2006 Load: 37.6 t ADT: 240
TOPSY BEL RD
FairOver: LITTLE MARSH BAYOU
5.6 MI SOUTH OF US 190, Allen, LA
Built 2000 Load: 37.6 t ADT: 925
N SEVENTH ST
FairOver: NORTH CREEK
0.2 MI N of W Beck Ave., Allen, LA
Built 1999 Load: 37.6 t ADT: 406
MAGNOLIA CHURCH RD
FairOver: BRUSHY CREEK
0.6 MI N of US 190, Beauregard, LA
Built 1986 Load: 37.6 t ADT: 160
LONGVILLE CHRCH RD
FairOver: HICKORY BRANCH
1.4 MI W of US 171, Beauregard, LA
Built 1984 Load: 37.6 t ADT: 610
Tiburon Blvd
FairOver: WILLOW CHUTE BAYOU
.01 MI E OF SWAN LAKE RD., Bossier, LA
Built 2005 Load: 37.6 t ADT: 3,408
Palmetto Ave
FairOver: Lil Cypress Bayou
0.3 MILE EAST OF LA HWY 3, Bossier, LA
Built 1986 Load: 37.6 t ADT: 2,300
Redland Rd
FairOver: Boggs Creek Trib
1.3 MI. WEST OF HWY 157, Bossier, LA
Built 1986 Load: 37.6 t ADT: 580
BUNCOMBE RD
FairOver: TRIB TO GILMER BAYOU
0.9 MI. N.E. CADDO RD. 7, Caddo, LA
Built 1983 Load: 37.6 t ADT: 2,656
GUM ISLAND RD
FairOver: SABINE CANAL
0.4 MI EAST OF LA 108, Calcasieu, LA
Built 1999 Load: 37.6 t ADT: 463
Showing 5,051-5,100 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 |