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
LA0012
GoodOver: BICKHAM SLOUGH
3.79 MI. WEST OF LA 109, Calcasieu, LA
Built 2013 Load: 37.3 t ADT: 3,365
Maribel Rd
GoodOver: HURRICANE CREEK
0.5 MI EAST OF US 61, East Baton Rouge, LA
Built 2016 Load: 37.3 t ADT: 259
Greenwell St
GoodOver: ROBERTS CANAL
1.5 MI E OF AIRLINE HWY, East Baton Rouge, LA
Built 2017 Load: 37.3 t ADT: 6,115
BARNETT CUT-OFF RD
GoodOver: BAYOU BATON ROUGE
0.5 MI S OF LA 64, East Baton Rouge, LA
Built 2019 Load: 37.3 t ADT: 310
Sharp Rd
GoodOver: JONES CREEK
0.1 MILE SOUTH OF US 190, East Baton Rouge, LA
Built 2014 Load: 37.3 t ADT: 13,727
LA0123
GoodOver: GRAY BRANCH CREEK
6.55 MI. EAST OF US 167, Grant, LA
Built 2011 Load: 37.3 t ADT: 595
LA0123
GoodOver: DRY PRONG CREEK
2.92 MI. EAST OF US 167, Grant, LA
Built 2011 Load: 37.3 t ADT: 595
LA0123
GoodOver: DRY PRONG RELIEF CREEK
2.82 MI. EAST OF US 167, Grant, LA
Built 2011 Load: 37.3 t ADT: 595
US0090
GoodOver: ARMENCO CANAL
0.7 Mi E of La 675, Iberia, LA
Built 2005 Load: 37.3 t ADT: 1,301
US0090
GoodOver: ARMENCO CANAL
1.37 MI W of LA 14, Iberia, LA
Built 2005 Load: 37.3 t ADT: 10,598
LA0004
GoodOver: CREEK
5.62 MI E BIENVILLE PAR, Jackson, LA
Built 1987 Load: 37.3 t ADT: 3,086
US0090
GoodOver: GROUND
0.5 MI S EAST OF MISSISSI, Jefferson, LA
Built 2013 Load: 37.3 t ADT: 32,801
BOURQUE ROAD
GoodOver: CANAL
1.2 M W of LA 101, Jefferson Davis, LA
Built 2004 Load: 37.3 t ADT: 100
S. Bernard Rd.
GoodOver: Cypress Bayou
0.8 Miles S. of La 3073, Lafayette, LA
Built 2017 Load: 37.3 t ADT: 1,597
Vincent Rd.
GoodOver: Anslem Coulee
0.30 Mi W of LA 339, Lafayette, LA
Built 2012 Load: 37.3 t ADT: 3,155
LA7281
GoodOver: GASTON COULEE
0.06 MI N of I-10, Lafayette, LA
Built 1982 Load: 37.3 t ADT: 10,589
SUNSHINE RD
GoodOver: DRAIN TO BAYOU BOEUF
2.0 MILES WEST OF LA 585, Morehouse, LA
Built 2012 Load: 37.3 t ADT: 75
WHITE AVE
GoodOver: STALKINGHEAD CREEK
0.7 MI S of US 165, Morehouse, LA
Built 2008 Load: 37.3 t ADT: 1,800
LA0156
GoodOver: CREEK
2.87 MI EAST OF LA 9, Natchitoches, LA
Built 2012 Load: 37.3 t ADT: 597
Kisatchie-Mora
GoodOver: LITTLE BAYOU PIERRE
6.4 MILES EAST OF LA 117, Natchitoches, LA
Built 1995 Load: 37.3 t ADT: 282
Freeman Loop Rd
GoodOver: LITTLE RIVER
3.0 M. NORTH OF LA 120, Natchitoches, LA
Built 1996 Load: 37.3 t ADT: 102
HADLEY ST
GoodOver: YOUNG'S BAYOU
1.21 MI. EAST OF US 165, Ouachita, LA
Built 2013 Load: 37.3 t ADT: 4,000
DAUTERIVE DR
GoodOver: 20 ARPENT CANAL
0.3 MI N OF LA 39, St. Bernard, LA
Built 2014 Load: 37.3 t ADT: 539
ROSETTA DR
GoodOver: 20 ARPENT CANAL
0.3 MI N OF LA 39, St. Bernard, LA
Built 2013 Load: 37.3 t ADT: 535
Fitzgerald Church
GoodOver: SIMULSA CREEK
1.1 MILES NORTH OF MILLIO, St. Tammany, LA
Built 2012 Load: 37.3 t ADT: 198
W CSWY APPR E.B.
GoodOver: CHINCHUB BAYOU
1.6 MI S LA 22 W CAUSEWAY, St. Tammany, LA
Built 1954 Load: 37.3 t ADT: 8,000
LA 22 W CAUSEWAY
GoodOver: W CSWY OV CHINCHUB BAYOU
1.6 MI S LA 22 W CAUSEWAY, St. Tammany, LA
Built 1954 Load: 37.3 t ADT: 8,000
E. Little Italy Rd
GoodOver: CREEK
0.1 Mi E of S Range Rd, Tangipahoa, LA
Built 2010 Load: 37.3 t ADT: 1,700
J. W. Davis Dr
GoodOver: CREEK
2.2 MILES SOUTHEAST OF US, Tangipahoa, LA
Built 2012 Load: 37.3 t ADT: 3,070
N. Cooper Rd
GoodOver: COOPER CREEK
4 MILES SOUTHEAST OF JCT, Tangipahoa, LA
Built 2009 Load: 37.3 t ADT: 961
SOUTHDOWN MANDALAY
GoodOver: COULEE CANAL
5 MILES WEST OF LA 316, Terrebonne, LA
Built 2007 Load: 37.3 t ADT: 1,392
Charlie Field Rd.
GoodOver: Tiger Bayou
0.4 MI S OF LA 14, Vermilion, LA
Built 2011 Load: 37.3 t ADT: 790
Maree Michel Rd
GoodOver: Maree Michel Canal
1 Mi E of La 14, Vermilion, LA
Built 2019 Load: 37.5 t ADT: 58
Bella Rd
GoodOver: Granger Coulee
0.10 MI. S. OF LA 92, Vermilion, LA
Built 2016 Load: 37.5 t ADT: 150
Tan Rd
GoodOver: Bayou Grand Marais
0.6 M E. OF LA 35, Vermilion, LA
Built 2018 Load: 37.5 t ADT: 421
BROADVIEW DR
GoodOver: LAPORTS COULEE
0.07 MI W OF LA 339, Vermilion, LA
Built 2023 Load: 37.5 t ADT: 575
LA 400
GoodOver: CANCIENNE CANAL
4.2 MILES NORTHWEST OF LA, Assumption, LA
Built 2013 Load: 37.6 t ADT: 384
Airline Dr
GoodOver: Willow Chute Bayou
2.0 MI N OF US HWY 80, Bossier, LA
Built 2004 Load: 37.6 t ADT: 19,000
LA0173
GoodOver: CREEK
2.7 MI S. OF LA 538, Caddo, LA
Built 2013 Load: 37.6 t ADT: 3,057
N PERKINS FERRY RD
GoodOver: BELFIELD DITCH
1.5 MI. N OF LA 378, Calcasieu, LA
Built 2012 Load: 37.6 t ADT: 10,079
W. CROCKER ST
GoodOver: BAYOU D'INDE
0.7 MI S OF US 90, Calcasieu, LA
Built 2017 Load: 37.6 t ADT: 390
CURRIE DRIVE
GoodOver: DRAIN
0.08 MI W OF CARLYSS DR, Calcasieu, LA
Built 2023 Load: 37.6 t ADT: 2,233
Perkins Rd
GoodOver: FARM POND
1.7 MI NE LA 67, LA22 JCT, East Feliciana, LA
Built 2003 Load: 37.6 t ADT: 24
Mt Carmel Rd.
GoodOver: BAYOU DOZA
2.6 Mi E of La 95, Evangeline, LA
Built 2010 Load: 37.6 t ADT: 27
Railroad Rd
GoodOver: Jefferson Canal
2.0 Mi W of Lee Gordon Rd, Iberia, LA
Built 2016 Load: 37.6 t ADT: 134
David Dubon Rd
GoodOver: Rodere Canal
1.28 MI E OF LA 329, Iberia, LA
Built 2016 Load: 37.6 t ADT: 633
Danielle Rd
GoodOver: Coulee
1.1 Mi. S. of La 344, Iberia, LA
Built 1991 Load: 37.6 t ADT: 651
W. METAIRIE AVE N
GoodOver: SONIAT CANAL
2.06 MI W OF LA 3152, Jefferson, LA
Built 2017 Load: 37.6 t ADT: 2,000
ESPAISIE RD
GoodOver: EDITH COULEE
0.46 MI S OF LA 92, Lafayette, LA
Built 2017 Load: 37.6 t ADT: 702
Buddy Ellis Rd
GoodOver: WEST, COYLELL, CREEK
1.5 MILES WEST OF LA 447, Livingston, LA
Built 2007 Load: 37.6 t ADT: 500
Showing 9,401-9,450 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 |