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
LA0421
GoodOver: MIDDLE FORK THOMPSON CRK
7.92 MILES E. OF US 61, West Feliciana, LA
Built 1995 Load: 34.5 t ADT: 739
LA0968
GoodOver: LITTLE BAYOU SARA
LA0968, West Feliciana, LA
Built 1981 Load: 34.5 t ADT: 232
BIA RT. 3015
GoodOver: COULLE DE GRUES
IN MARKSVILLE, LA, Avoyelles, LA
Built 2015 Load: 34.7 t ADT: 350
LIGHTNING ST
GoodOver: D'INDE BAYOU
0.1 MI N of MUSTANG ST., Calcasieu, LA
Built 2017 Load: 34.7 t ADT: 150
Harris Rd
GoodOver: CHOCTAW CREEK
5.0 MI EAST OF US 79, Claiborne, LA
Built 2007 Load: 34.7 t ADT: 250
Harry P William Dr
GoodOver: MONTE SANO BAYOU
0.03 MI E VETERANS BLVD, East Baton Rouge, LA
Built 1987 Load: 34.7 t ADT: 10,626
LA0572
GoodOver: CREEK
0.10 M W of LA 572, Franklin, LA
Built 2003 Load: 34.7 t ADT: 265
LA0327
GoodOver: BAYOU PAUL
0.5 MI N OF LA.75, Iberville, LA
Built 2016 Load: 34.7 t ADT: 2,969
LA0499
GoodOver: CREEK
7.85 MI SOUTH OF LA4, Jackson, LA
Built 2011 Load: 34.7 t ADT: 114
LA0499
GoodOver: CANEY CREEK
7.64 MI SOUTH OF LA4, Jackson, LA
Built 2011 Load: 34.7 t ADT: 114
LA0499
GoodOver: CREEK
7.54 MI SOUTH OF LA 4, Jackson, LA
Built 2011 Load: 34.7 t ADT: 114
Theriot Rd.
GoodOver: QUEUE DE TORTUE BAYOU
1.1 Mi E of LA 35, Lafayette, LA
Built 2015 Load: 34.7 t ADT: 66
Forrest Delatte
GoodOver: Grays Creek
1 Mi W. of LA 1026, Livingston, LA
Built 2022 Load: 34.7 t ADT: 4,195
NO DATA ENTERED
GoodOver: KISATCHIE BAYOU TRIBUTAR
NO DATA ENTERED, Natchitoches, LA
Built 2014 Load: 34.7 t ADT: 50
LA0491
GoodOver: RAT BOIS BAYOU
2.5 MI. NORTH OF LA 495, Natchitoches, LA
Built 2010 Load: 34.7 t ADT: 237
LA0363
GoodOver: DRAINAGE CANAL
2.2 MI N of LA 748, St. Landry, LA
Built 2009 Load: 34.7 t ADT: 777
US0190
GoodOver: BAYOU DARBONNE E.B.
7.0 MI EAST OF LA 741, St. Landry, LA
Built 2004 Load: 34.7 t ADT: 13,476
Capritto Rd
GoodOver: COULEE
0.31M NORTH OF LA 96, St. Martin, LA
Built 1991 Load: 34.7 t ADT: 503
CROW FARM RD
GoodOver: GLAZE CREEK
5.9 MI. E. INT. 800, Union, LA
Built 1983 Load: 34.7 t ADT: 201
LA0463
GoodOver: THOMPSON BRANCH
7.9 MI N OF LA 10, Vernon, LA
Built 2017 Load: 34.7 t ADT: 482
J. Stuart Rd
GoodOver: BOGUE LUSA CREEK
.25 TENTHS N OF LA 436&62, Washington, LA
Built 2002 Load: 34.7 t ADT: 376
LA0010
GoodOver: MISSISSIPPI RIVER
3.9 MILES EAST OF US 61, West Feliciana, LA
Built 2011 Load: 34.7 t ADT: 5,763
Indigo Rd.
GoodOver: Bayou Plaquemine
1.83 Mi. E. of La 13, Acadia, LA
Built 2005 Load: 35.0 t ADT: 10
Napp St.
GoodOver: Coulee
0.3 MI NW of LA 35, Acadia, LA
Built 2017 Load: 35.0 t ADT: 672
Rountree Rd
GoodOver: NEW RIVER
0.2 OF A MILE NORTH OF LA, Ascension, LA
Built 2013 Load: 35.0 t ADT: 5
LA0004
GoodOver: SALINE BAYOU RELIEF 2
1.46 MI EAST OF LA 9, Bienville, LA
Built 2010 Load: 35.0 t ADT: 504
LA0004
GoodOver: MUDDY CREEK
0.3 MI E OF LA 501, Bienville, LA
Built 2010 Load: 35.0 t ADT: 1,445
LA0004
GoodOver: DRAIN
0.2 MI E OF LA 501, Bienville, LA
Built 2010 Load: 35.0 t ADT: 1,445
Swan Lake Rd
GoodOver: Flat River Bayou
5.5 MI. N. OF US 80, Bossier, LA
Built 2006 Load: 35.0 t ADT: 2,800
Watts Rd
GoodOver: SUGAR CREEK
7 MI. NW SIMS ROAD, Claiborne, LA
Built 2007 Load: 35.0 t ADT: 80
Elm Grove Garden
GoodOver: MONTE SANO BAYOU
0.5 MI S OF ROSENWALD RD, East Baton Rouge, LA
Built 2014 Load: 35.0 t ADT: 2,362
LA0946
GoodOver: COMITE RIVER
LA 946 APPROX. 2.4 MILES, East Baton Rouge, LA
Built 2009 Load: 35.0 t ADT: 11,578
LA0946
GoodOver: COMITE RIVER RELIEF
LA 946 APPROX 2.2 MILES N, East Baton Rouge, LA
Built 2009 Load: 35.0 t ADT: 11,578
EAST GARFIELD ST
GoodOver: CORPORATION CANAL
0.05 MI E OF HIGHLAND RD, East Baton Rouge, LA
Built 2018 Load: 35.0 t ADT: 308
LA0010
GoodOver: REDWOOD CREEK
0.5 MILES WEST OF JCT. LA, East Feliciana, LA
Built 2012 Load: 35.0 t ADT: 5,083
Beechgrove Rd
GoodOver: PRETTY CREEK
3.2 MILES N OF CLINTON, East Feliciana, LA
Built 1998 Load: 35.0 t ADT: 76
Beechgrove Rd
GoodOver: DRAINAGE CREEK
3.4 MI N. OF CLINTON, East Feliciana, LA
Built 1998 Load: 35.0 t ADT: 56
Perkins Rd
GoodOver: PERKINS RD, POND
3.2 MI. N FELIXVILLE, East Feliciana, LA
Built 2003 Load: 35.0 t ADT: 24
LA0562
GoodOver: TURKEY CREEK
6.30 M S of LA 875, Franklin, LA
Built 2006 Load: 35.0 t ADT: 1,532
Tommie Moore Rd
GoodOver: HURRICANE BAYOU
0.27 Mi west of LA 17., Franklin, LA
Built 1993 Load: 35.0 t ADT: 40
LA0075
GoodOver: MILLY CANAL
5.2 MILES WEST OF LA 1, Iberville, LA
Built 2011 Load: 35.0 t ADT: 1,490
US0167
GoodOver: CREEK
14.6 MI NORTH OF WINN PAR, Jackson, LA
Built 2011 Load: 35.0 t ADT: 8,681
CONCORD RD
GoodOver: EDWARDS BRANCH
0.9 MI SW of LA 146, Jackson, LA
Built 2002 Load: 35.0 t ADT: 65
Wall St
GoodOver: COULEE
.07 MI E of Delta RD, Lafayette, LA
Built 2011 Load: 35.0 t ADT: 146
LA0182
GoodOver: DRAIN CANAL
.7 MILES EAST OF LA 308, Lafourche, LA
Built 2011 Load: 35.0 t ADT: 5,783
LA0146
GoodOver: BIG CREEK
1.25 MI. EAST OF LA 563, Lincoln, LA
Built 2013 Load: 35.0 t ADT: 2,775
Black Lake Club Rd
GoodOver: BAYOU
3.5 MILES SOUTH OF LA. 22, Livingston, LA
Built 2014 Load: 35.0 t ADT: 300
STEVE OGDEN RD
GoodOver: BAYOU MACON
0.5 MILES EAST OF LA 577, Madison, LA
Built 2012 Load: 35.0 t ADT: 100
ALLEN TOUSSAINT B
GoodOver: ORLEANS AVENUE CANAL
0.01 MI E OF ORLEANS AVE, Orleans, LA
Built 2001 Load: 35.0 t
ANGUS RD
GoodOver: PRAIRIE BAYOU
2.51 MI NE of US 165 S, Ouachita, LA
Built 2005 Load: 35.0 t ADT: 3,000
Showing 9,001-9,050 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 |