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
Maricelli Rd
GoodOver: BOURBEAUX BAYOU
MARICELLI ROAD, 1.1 MILES, Natchitoches, LA
Built 2000 Load: 24.9 t ADT: 103
COONEY BONNETT RD
GoodOver: BOGALOOSA CREEK
0.2 MI S OF LA 34, Ouachita, LA
Built 2017 Load: 24.9 t ADT: 469
RIFLE RANGE RD
GoodOver: BENNET BAYOU
UNDER SICARD OVERPASS, Ouachita, LA
Built 2011 Load: 24.9 t ADT: 400
Dan Tripplett Rd
GoodOver: LITTLE BAYOU CLEAR
0.26 M. N. OF CASTOR PLUN, Rapides, LA
Built 1988 Load: 24.9 t ADT: 100
PLAINVIEW RD
GoodOver: TORO CREEK
2.65 MI. EAST OF US 171, Sabine, LA
Built 1992 Load: 24.9 t ADT: 400
MLK Jr. Dr.
GoodOver: Bayou Tesson
0.1 Mi. W. of La 182, St. Landry, LA
Built 1965 Load: 24.9 t ADT: 1,000
Lake Rd
GoodOver: POWELL CANAL
2.05 MILES SOUTH OF LA 43, St. Tammany, LA
Built 2010 Load: 24.9 t ADT: 659
LA0010
GoodOver: CREEK
8.4 MI. EAST OF JCT US 51, Tangipahoa, LA
Built 2005 Load: 24.9 t ADT: 1,335
Dalton Rd
GoodOver: Isle Marrone Canal
2.3 Mi W of LA 695, Vermilion, LA
Built 1987 Load: 24.9 t ADT: 830
Sunny Hill Rd
GoodOver: DEERLICK CREEK
2.0M NORTH OF LA 1056, Washington, LA
Built 1993 Load: 24.9 t ADT: 469
LA0127
GoodOver: CREEK
12.72 M. NW CALDWELL LINE, Winn, LA
Built 2010 Load: 24.9 t ADT: 183
S. Leblanc St.
GoodOver: COULEE
0.7 MILES EAST OF LA 1115, Acadia, LA
Built 2001 Load: 25.3 t ADT: 480
Mark Twain Rd.
GoodOver: LYONS POINT GULLY
1.2 MILES WEST OF LA 3007, Acadia, LA
Built 2001 Load: 25.3 t ADT: 100
Lafosse Rd
GoodOver: Coulee
0.3 Mi S. of La 92, Acadia, LA
Built 2001 Load: 25.3 t ADT: 96
Clement Rd.
GoodOver: Coulee
0.2 Mi W. Of La 91, Acadia, LA
Built 2001 Load: 25.3 t ADT: 576
Howard Rd.
GoodOver: Pointe Aux Loups Bayou
0.2 Mi. S. of La 98, Acadia, LA
Built 1999 Load: 25.3 t ADT: 144
Schultz Rd.
GoodOver: COLE GULLY
1.9 miles East of HWY 13, Acadia, LA
Built 2001 Load: 25.3 t ADT: 144
Schultz Rd.
GoodOver: GRANDE COULEE
0.02 MI E OF LA 13, Acadia, LA
Built 2001 Load: 25.3 t ADT: 240
Ed Thibodeaux Rd.
GoodOver: WICKOFF BAYOU
1.25 Mi W of La 95, Acadia, LA
Built 2001 Load: 25.3 t ADT: 960
Allie Young Rd
GoodOver: Barwick Bayou
0.6 MI E of LA 97, Acadia, LA
Built 1999 Load: 25.3 t ADT: 288
US0090
GoodOver: WESTBOUND ON RAMP
0.1 M E of US 90&LA 662, Assumption, LA
Built 1998 Load: 25.3 t ADT: 12,192
LA0001
GoodOver: MAHLIN BAYOU
.6 MI NORTH OF LA 173, Caddo, LA
Built 1940 Load: 25.3 t ADT: 9,576
US0165
GoodOver: BLACK BAYOU
0.6 MILES NORTH OF LA 843, Caldwell, LA
Built 2004 Load: 25.3 t ADT: 6,071
W. Johnson St
GoodOver: CORPORATION CANAL
BATON ROUGE, East Baton Rouge, LA
Built 1970 Load: 25.3 t ADT: 2,500
Pelican Rd.
GoodOver: DES CANNES BAYOU
0.2 Mi N of La 10, Evangeline, LA
Built 2013 Load: 25.3 t ADT: 27
Dry Prong Creek Rd
GoodOver: DRY PRONG CREEK
1.07 M. E. OF LA 123 NEAR, Grant, LA
Built 2005 Load: 25.3 t ADT: 36
GRAND MARAIS ROAD
GoodOver: GUM GULLY
1.2 MI W of LA 395, Jefferson Davis, LA
Built 1987 Load: 25.3 t ADT: 50
LA0020
GoodOver: GRAND BAYOU
07.62 MILES NORTH OF LA 3, Lafourche, LA
Built 2012 Load: 25.3 t ADT: 8,298
HWY 645 Local
GoodOver: BAYOU BOUDREAUX
2.3M NW OF LA 1, Lafourche, LA
Built 1993 Load: 25.3 t ADT: 198
Jennings Rd.
GoodOver: BAYOU TECHE
1.8 Miles South of LA 742, St. Landry, LA
Built 2002 Load: 25.3 t ADT: 1,750
Williamson Spur Rd
GoodOver: DRAINAGE CANAL
1.2 MI NE of US 71, St. Landry, LA
Built 2002 Load: 25.3 t ADT: 210
GOLDEN MEADOW DR.
GoodOver: DRAIN
1.70 MI EAST OF US 90, St. Tammany, LA
Built 1999 Load: 25.3 t ADT: 200
Dummyline Rd
GoodOver: BLACK RIVER
1.54 M W OF LA 1077, St. Tammany, LA
Built 1990 Load: 25.3 t ADT: 1,563
Aristile Rd
GoodOver: BAYOU LAROUSE
ARISTILE RD 0.5 MI E. OF, Assumption, LA
Built 2012 Load: 25.4 t ADT: 1,720
Butler Hill Rd
GoodOver: Cypress Bayou Trib
0.3 MI S OF LA 160, Bossier, LA
Built 2019 Load: 25.4 t ADT: 500
Young Rd.
GoodOver: Bear Branch Trib
0.5 MI. S. OF LA 160 ON Y, Bossier, LA
Built 2016 Load: 25.4 t ADT: 220
Sibley Rd
GoodOver: Black Bayou
1.0 MI. N. OF LA 162, Bossier, LA
Built 2016 Load: 25.4 t ADT: 12
Stumberg Ln
GoodOver: JACKS BAYOU
BATON ROUGE, STUMBERG LN., East Baton Rouge, LA
Built 1999 Load: 25.4 t ADT: 13,970
Wilson-Clinton Rd
GoodOver: PRETTY CREEK
.45 MI. W OF LA 67, East Feliciana, LA
Built 2007 Load: 25.4 t ADT: 84
Choupique Road
GoodOver: LA1162
0.66 Mi W of LA 29, Evangeline, LA
Built 2019 Load: 25.4 t ADT: 111
LA0024
GoodOver: TERREBONNE BAYOU
LOGMI 04.69-LA 24 SPUR, Terrebonne, LA
Built 1981 Load: 25.4 t ADT: 259
I0049
GoodOver: SWIFT BAYOU CANAL
I-49 / LA 530 INTG., Caddo, LA
Built 2013 Load: 25.6 t ADT: 8,115
ROUTE 66
GoodOver: CREEK RELIEF
3.5 MI WEST OF LA 27, Calcasieu, LA
Built 2001 Load: 25.6 t ADT: 345
EDGERLY DQ RD
GoodOver: GULLY
0.8 MI N of BENNETT RD., Calcasieu, LA
Built 2002 Load: 25.6 t ADT: 443
Perkins Rd
GoodOver: DAWSON CREEK BRIDGE
LA 427 APPROX. 1.04 MILES, East Baton Rouge, LA
Built 2010 Load: 25.6 t ADT: 25,100
JEAN DUOS RD
GoodOver: JOE MARCEL BAYOU
0.4 MI. E. OF LA 3097, Evangeline, LA
Built 2016 Load: 25.6 t ADT: 161
Flagon Rd.
GoodOver: FLAGON BAYOU
0.57 M. W. OF JCT. US 167, Grant, LA
Built 1997 Load: 25.6 t ADT: 400
E. Pont Des Mouton
GoodOver: VERMILION RIVER
1.3 MI E OF LA 728-1, Lafayette, LA
Built 1986 Load: 25.6 t ADT: 2,530
Windmill Rd
GoodOver: RHINEHART CREEK
.1 mile fr blade loop jct, LaSalle, LA
Built 2002 Load: 25.6 t ADT: 60
Bayou Derbonne Rd
GoodOver: BAYOU DERBONNE
3.0 MILES WEST OF LA 1, Natchitoches, LA
Built 2012 Load: 25.6 t ADT: 104
Showing 7,201-7,250 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 |