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
I0049
GoodOver: MYRICKS BAYOU
1.29 M. N. OF LA 169, Caddo, LA
Built 2013 Load: 38.9 t ADT: 6,846
I0049
GoodOver: DOOLEY BAYOU
2.11 M. N. OF LA 169, Caddo, LA
Built 2013 Load: 38.9 t ADT: 29,542
I0049
GoodOver: DOOLEY BAYOU
2.90 M. S. OF LA 530, Caddo, LA
Built 2013 Load: 38.9 t ADT: 6,846
I0049
GoodOver: SWIFT BAYOU
0.55 M. S. OF LA 530, Caddo, LA
Built 2013 Load: 38.9 t ADT: 29,542
I0049
GoodOver: SWIFT BAYOU
0.56 M. S. OF LA 530, Caddo, LA
Built 2013 Load: 38.9 t ADT: 6,846
O'Neal Ln
GoodOver: Knox Canal
0.80 Mi N of George Oneal, East Baton Rouge, LA
Built 2017 Load: 38.9 t ADT: 35,003
O'Neal Ln
GoodOver: Jones Creek
0.50 Mi N of George Oneal, East Baton Rouge, LA
Built 2017 Load: 38.9 t ADT: 35,003
O'Neal Ln
GoodOver: Knox Canal
1.6 Mi. S Of I-12 EB, East Baton Rouge, LA
Built 2017 Load: 38.9 t ADT: 35,003
O'Neal Ln
GoodOver: Jones Creek
1.9 Mi. S Of I-12 EB, East Baton Rouge, LA
Built 2017 Load: 38.9 t ADT: 35,003
Lee Dr
GoodOver: BAYOU DUPLANTIER
0.9 Mi NE of LA 42, East Baton Rouge, LA
Built 2000 Load: 38.9 t ADT: 12,050
Wadd Kent Rd
GoodOver: PRETTY CREEK
1.5 Mi. N. of LA 67, East Feliciana, LA
Built 2012 Load: 38.9 t ADT: 12
Kateland Road
GoodOver: Darrow Bayou
2.41 Mi E of La 8, Grant, LA
Built 2017 Load: 38.9 t ADT: 125
LA0086
GoodOver: LOREAUVILLE CANAL
1.8 MI NE of LA 320, Iberia, LA
Built 2004 Load: 38.9 t ADT: 3,661
LA0004
GoodOver: HANCOCK CREEK
4.72 MI EAST OF LA 505, Jackson, LA
Built 2005 Load: 38.9 t ADT: 2,246
Chemin Metairie Rd
GoodOver: COULEE
0.43 MI S LA 3073, Lafayette, LA
Built 2011 Load: 38.9 t ADT: 1,110
Acadiana Place Sub
GoodOver: BRIDGE OVER BEAVER CREEK
.5 MI N OF LA16& 1025 JCT, Livingston, LA
Built 1999 Load: 38.9 t ADT: 250
WILLOW BAYOU RD
GoodOver: WILLOW BAYOU
6.0 MI NE of US 80, Madison, LA
Built 2003 Load: 38.9 t ADT: 75
LA0428
GoodOver: ALGIERS CANAL
1.0 MILE SOUTH EAST OF US, Orleans, LA
Built 2012 Load: 38.9 t ADT: 626
Harold Miles Park
GoodOver: Big Bayou
0.31 M S of La 1, Rapides, LA
Built 2018 Load: 38.9 t ADT: 270
LA0112
GoodOver: HINESTON BRANCH
0.31 MILES EAST OF LA 121, Rapides, LA
Built 2007 Load: 38.9 t ADT: 1,268
LAKESIDE LOOP
GoodOver: ARNOLD CREEK
3.1 MI SW OF LA 191, Sabine, LA
Built 2017 Load: 38.9 t ADT: 250
Rozena Road
GoodOver: Mallet Bayou
.10 Mi S. of US 190, St. Landry, LA
Built 2019 Load: 38.9 t ADT: 50
Joe W. Rd
GoodOver: Mallet Bayou
0.7 MI. S. OF US 190, St. Landry, LA
Built 2017 Load: 38.9 t ADT: 85
BAYOU MERCIER RD
GoodOver: BERARD CANAL BAYOU
.01 MI. W. OF LA 352, St. Martin, LA
Built 2017 Load: 38.9 t ADT: 77
LA0092
GoodOver: Bayou Tortue
1.84 MI East Of LA 182, St. Martin, LA
Built 2004 Load: 38.9 t ADT: 4,071
US0190
GoodOver: FRENCH BRANCH
0.3 MILES WEST OF US 190, St. Tammany, LA
Built 2013 Load: 38.9 t ADT: 2,496
US0190
GoodOver: CREEK
0.3 M SW OF LA 25, St. Tammany, LA
Built 1969 Load: 38.9 t ADT: 12,522
Weinberger Rd
GoodOver: BIG BRANCH
1.90 M S of LA 22, Tangipahoa, LA
Built 1984 Load: 38.9 t ADT: 549
LA0182
GoodOver: ST. LOUIS CANAL
0.7 MI WEST OF LA 24, Terrebonne, LA
Built 2004 Load: 38.9 t ADT: 3,687
LA0010
GoodOver: DRAKES CREEK
6.89 MI. EAST OF LA 467, Vernon, LA
Built 2007 Load: 38.9 t ADT: 1,673
LA0010
GoodOver: SLAUGHTER BRANCH
8.03 MI. EAST OF LA 467, Vernon, LA
Built 2007 Load: 38.9 t ADT: 1,673
LA0010
GoodOver: BIG BRANCH
8.10 MI EAST OF LA 467, Vernon, LA
Built 2007 Load: 38.9 t ADT: 1,673
LA0010
GoodOver: WHISKEY CHITTO RELIEF
11.81 MI EAST OF LA 467, Vernon, LA
Built 2007 Load: 38.9 t ADT: 1,673
LA0010
GoodOver: CREEK
3.73 MI. EAST OF LA 377, Vernon, LA
Built 2006 Load: 38.9 t ADT: 2,773
LA0010
GoodOver: TEN MILE CREEK RELIEF
4.02 MI. EAST OF LA 377, Vernon, LA
Built 2006 Load: 38.9 t ADT: 2,773
Yates Rd
GoodOver: TCHEFUNCTE RIVER
1.1 MILES WEST OF 450, Washington, LA
Built 2008 Load: 38.9 t ADT: 308
Pecan St
GoodOver: POYDRAS BAYOU
100 FT E of LA 413, West Baton Rouge, LA
Built 1984 Load: 38.9 t ADT: 275
Peterson Rd
GoodOver: Cason Creek
1.8 Mi. NW of LA 421, West Feliciana, LA
Built 2021 Load: 38.9 t ADT: 200
LA0525
GoodOver: GILMER BAYOU
1.50 MI. W. OF US 171, Caddo, LA
Built 1986 Load: 39.0 t ADT: 4,294
LA3132
GoodOver: LINWOOD AVE.
1.61 MI. E. OF US 171, Caddo, LA
Built 1988 Load: 39.0 t ADT: 53,886
LA3132
GoodOver: LINWOOD AVE.
0.8 MI. W. OF I-49, Caddo, LA
Built 1988 Load: 39.0 t ADT: 23,520
I0049
GoodOver: ST. VINCENT AVENUE
2.58 M. NORTH OF LA 511, Caddo, LA
Built 1994 Load: 39.0 t ADT: 87,567
WEST LOGAN ST
GoodOver: GUM SLOUGH
0.003 MI E of PICARD RD, Calcasieu, LA
Built 2011 Load: 39.0 t ADT: 150
LA0126
GoodOver: CREEK
2.2 MI N OF LA 851, Caldwell, LA
Built 1982 Load: 39.0 t ADT: 1,092
LA0004
GoodOver: BILLS CREEK RELIEF
3.5 MI W OF LA 846, Caldwell, LA
Built 1976 Load: 39.0 t ADT: 311
LA0506
GoodOver: KINNERSON CREEK
0.79 M W of LA 843, Caldwell, LA
Built 1984 Load: 39.0 t ADT: 306
LA0846
GoodOver: CREEK
5.7 MI N OF LA 4, Caldwell, LA
Built 1982 Load: 39.0 t ADT: 650
LA0849
GoodOver: BRIDGE CREEK
0.74 M E of LA 126, Caldwell, LA
Built 1983 Load: 39.0 t ADT: 739
LA0124
GoodOver: SLOUGH
0.7 MI N OF LA 8, Catahoula, LA
Built 1977 Load: 39.0 t ADT: 1,706
LA0126
GoodOver: FORD'S CREEK
6.6 MI SOUTH OF LA 459, Catahoula, LA
Built 1983 Load: 39.0 t ADT: 544
Showing 9,601-9,650 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 |