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
Curran Ln.
GoodOver: CANAL
0.3 Mi W of Amb Caffery, Lafayette, LA
Built 2007 Load: 33.0 t ADT: 1,848
LA0022
GoodOver: BAYOU CHOUPIQUE
5.46 MI E OF JCT. LA 16, Livingston, LA
Built 2000 Load: 33.0 t ADT: 2,201
LA0120
GoodOver: Bayou Blue
3.65 MI E of LA 117, Natchitoches, LA
Built 2018 Load: 33.0 t ADT: 665
Martin Dr
GoodOver: MORRISON CANAL
0.7 MI. SOUTH OF HAYNE BL, Orleans, LA
Built 2012 Load: 33.0 t
TARVER RD
GoodOver: LITTLE CR
1.8 MI N OF LA 132, Richland, LA
Built 2016 Load: 33.0 t ADT: 105
Potato Shed Road
GoodOver: Portage Bayou
0.3 Mi E. of LA 678, St. Martin, LA
Built 2019 Load: 33.0 t ADT: 612
US0051
GoodOver: DRAIN
0.3 M N OF LA 1048, Tangipahoa, LA
Built 1957 Load: 33.0 t ADT: 2,199
LA0010
GoodOver: BLUE BRANCH
.9 MI EAST OF LA 463, Vernon, LA
Built 2005 Load: 33.0 t ADT: 2,027
LA0010
GoodOver: BIG BRUSHY CREEK
0.35 MI. WEST OF LA 377, Vernon, LA
Built 2005 Load: 33.0 t ADT: 1,120
LA0010
GoodOver: TEN MILE CREEK
3.87 MI. EAST OF LA 377, Vernon, LA
Built 2006 Load: 33.0 t ADT: 2,773
LA0465
GoodOver: INDIAN BRANCH
2.85 MI EAST OF LA 117, Vernon, LA
Built 2000 Load: 33.0 t ADT: 115
COOPER CHURCH RD
GoodOver: ZOURIE CREEK
1.48 M. W. OF US 171, Vernon, LA
Built 2002 Load: 33.0 t ADT: 800
LA1115
GoodOver: CREEK
8.56 MI EAST OF LA 91, Acadia, LA
Built 1960 Load: 33.4 t ADT: 377
LA0663
GoodOver: L'OURSE BAYOU
0.1 MILE EAST OF LA. 662, Assumption, LA
Built 2015 Load: 33.4 t ADT: 96
Guin St
GoodOver: CASTOR CREEK
1.6 MI SOUTH OF LA 507, Bienville, LA
Built 2013 Load: 33.4 t ADT: 120
Oakley Rd
GoodOver: BRINSONS CREEK
0.4 MI. SO. OF US 80, Bienville, LA
Built 2006 Load: 33.4 t ADT: 50
I0049
GoodOver: KELLY BAYOU
3.48 M. N. OF US 71, Caddo, LA
Built 2014 Load: 33.4 t ADT: 53,023
I0049
GoodOver: KELLY BAYOU
3.48 M. N. OF US 71, Caddo, LA
Built 2014 Load: 33.4 t ADT: 6,846
Sanders Rd
GoodOver: TRIB TO CROWS CREEK
0.8 MI EAST OF US 79, Claiborne, LA
Built 2012 Load: 33.4 t ADT: 55
Sanders Rd
GoodOver: CROWS CREEK
0.9 MI EAST OF US 79, Claiborne, LA
Built 2012 Load: 33.4 t ADT: 50
Hunter Rd
GoodOver: CLEMENT CREEK
3.5 MI NORTH OF US 84, De Soto, LA
Built 2011 Load: 33.4 t ADT: 150
WOODLAND RIDGE BLV
GoodOver: JONES CREEK
0.7 MI S OF HARRELS FERRY, East Baton Rouge, LA
Built 2020 Load: 33.4 t ADT: 931
Green Valley Rd
GoodOver: Petite Passe
1.0 Mi N. of LA 748, Evangeline, LA
Built 2022 Load: 33.4 t ADT: 10
Union Church Rd
GoodOver: BULLS BAYOU
2.13 mi. east of LA 132, Franklin, LA
Built 2010 Load: 33.4 t ADT: 675
US0167
GoodOver: BIG CREEK
1.07 MILES SOUTH OF LA 12, Grant, LA
Built 2014 Load: 33.4 t ADT: 7,084
LA0083
GoodOver: BAYOU WAREHOUSE
3.6 Miles North of LA 319, Iberia, LA
Built 2009 Load: 33.4 t ADT: 3,078
San Marcos Drive
GoodOver: Retention pond
0.08 Mi East of LA 339, Lafayette, LA
Built 2016 Load: 33.4 t ADT: 572
Memory Ln.
GoodOver: MINE BRANCH COULEE
0.59 Mi SW of LA 182, Lafayette, LA
Built 1970 Load: 33.4 t ADT: 500
S. St. Louis St
GoodOver: MINE BRANCH COULEE
0.09 MI E of White Oak Dr, Lafayette, LA
Built 1970 Load: 33.4 t ADT: 400
Jeanne St
GoodOver: MINE BRANCH COULEE
0.40 Mi SW of US 90, Lafayette, LA
Built 1970 Load: 33.4 t ADT: 480
Palm Dr.
GoodOver: CITY PARK LAGOON
0.1 MI.W.OF GOLF DR., Orleans, LA
Built 1939 Load: 33.4 t
RED CUT LOOP RD
GoodOver: PRAIRION BAYOU
4.0 MILES EAST OF LA 557, Ouachita, LA
Built 2011 Load: 33.4 t ADT: 200
RED CUT LOOP RD
GoodOver: PRAIRION BAYOU
4.0 MILES EAST OF LA 557, Ouachita, LA
Built 2011 Load: 33.4 t ADT: 200
WINNFIELD RD
GoodOver: CHENIERE CREEK
1.5 MILES NORTH OF LA 34, Ouachita, LA
Built 2012 Load: 33.4 t ADT: 350
GARRETT RD
GoodOver: YOUNGS BAYOU
GARRET ROAD, Ouachita, LA
Built 1982 Load: 33.4 t ADT: 600
NUTLAND RD
GoodOver: AIRPORT CANAL
NUTLAND ROAD S OF MO, Ouachita, LA
Built 1983 Load: 33.4 t ADT: 800
PONY GREER RD
GoodOver: BURNS BAYOU
0.2 MI E of LA 3048, Richland, LA
Built 2003 Load: 33.4 t ADT: 300
MIDWAY CHURCH LANE
GoodOver: BOGZACK CREEK
0.7 MI NE of LA 17, Richland, LA
Built 2003 Load: 33.4 t ADT: 100
US0171
GoodOver: BAYOU TORO RELIEF
5.22 MI. NORTH OF LA 392, Sabine, LA
Built 2009 Load: 33.4 t ADT: 4,790
Cheneau Rd
GoodOver: ISLE MARRONE CANAL
0.1 E of N Herpin Ave, Vermilion, LA
Built 2010 Load: 33.4 t ADT: 528
LA0010
GoodOver: WHISKEY CHITTO
12.10 MI EAST OF LA 467, Vernon, LA
Built 2007 Load: 33.4 t ADT: 1,673
US0084
GoodOver: UNNAMED CREEK
13.2 MI E OF SALINE BAYOU, Winn, LA
Built 1997 Load: 33.4 t ADT: 2,963
LA1231-1
GoodOver: POLE MILL CREEK
0.68 MI. WEST OF US 167, Winn, LA
Built 2002 Load: 33.4 t ADT: 569
Allbritton
GoodOver: BEECH CREEK
1.52 MI. SOUTH OF LA 124, Winn, LA
Built 2006 Load: 33.4 t ADT: 30
I0010
GoodOver: OFF RP TO S US61
I0010, Ascension, LA
Built 1975 Load: 33.6 t ADT: 5,341
LA0173
GoodOver: CROSS BAYOU
0.20 MI E JCT LA 3094, Caddo, LA
Built 1983 Load: 33.6 t ADT: 15,302
LA3132
GoodOver: T. & P. RR
1.8 MI. E. OF LA 511, Caddo, LA
Built 1984 Load: 33.6 t ADT: 53,886
LA3132
GoodOver: T. & P. RR
2.4 MI. W. OF US 171, Caddo, LA
Built 1984 Load: 33.6 t ADT: 23,520
I0049
GoodOver: I-49 OVER 63RD. STREET
I-49 @ 63RD ST (Loc Rd), Caddo, LA
Built 1988 Load: 33.6 t ADT: 28,142
LA0129
GoodOver: CHANNEL BRIDGE
0.10 M S of LA 129, Concordia, LA
Built 1981 Load: 33.6 t ADT: 68
Showing 8,751-8,800 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 |