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
LA1252
GoodOver: Bayou Vermilion
4.2 Mi E of I49 Front RD, Lafayette, LA
Built 2022 Load: 35.6 t ADT: 610
LA00339-S
GoodOver: Bayou Parc Perdue
0.9 Mi E of LA 339, Lafayette, LA
Built 2022 Load: 35.6 t ADT: 4,993
James Chapel Rd
GoodOver: Blood River
1.2 MILES WEST OF LA. 43, Livingston, LA
Built 2014 Load: 35.6 t ADT: 700
PORT RD
GoodOver: TALLA BENA BAYOU
0.1 MI E of US 65, Madison, LA
Built 2003 Load: 35.6 t ADT: 500
E BEAR LAKE RD #4
GoodOver: BULL BAYOU
3.0 MI W of US 65, Madison, LA
Built 2003 Load: 35.6 t ADT: 125
Strekx Rd
GoodOver: Horseshoe Canal
0.54 MI. NORTH OF US 71, Rapides, LA
Built 1995 Load: 35.6 t ADT: 8,900
PINE GROVE DR
GoodOver: CANAL
0.2 MI. NORTH OF LA 107, Rapides, LA
Built 1998 Load: 35.6 t ADT: 6,700
US0171
GoodOver: MIDKIFF CREEK
0.33 MI. NORTH OF LA 474, Sabine, LA
Built 2004 Load: 35.6 t ADT: 2,726
US0171
GoodOver: MIDKIFF CREEK
0.98 MI. NORTH OF LA 474, Sabine, LA
Built 2004 Load: 35.6 t ADT: 2,726
LA0103
GoodOver: BAYOU COURTBLEAU
1.0 MI E of LA 743, St. Landry, LA
Built 2009 Load: 35.6 t ADT: 2,000
LA3147
GoodOver: EXCH OIL & GAS CORP LINE
8.5 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 35.6 t ADT: 221
Pleasant Hill Rd
GoodOver: DEER LICK CREEK
2.2 MI N OF LA 1056, Washington, LA
Built 2001 Load: 35.6 t ADT: 580
US0167
GoodOver: KANSAS CITY SOUTHERN RR
3.29 MI. NORTH OF LA 500, Winn, LA
Built 2009 Load: 35.6 t ADT: 11,712
US0167
GoodOver: KANSAS CITY SOUTHERN RR
3.29 MI. NORTH OF LA 500, Winn, LA
Built 2009 Load: 35.6 t ADT: 5,107
ROY RD
GoodOver: LOGAN BAYOU
0.2 MI. SOUTH OF LA 173, Caddo, LA
Built 2012 Load: 36.0 t ADT: 900
Keithvil-Sprrdg Rd
GoodOver: TRIB. TO BUCHANAN BAYOU
1.3 MILES WEST OF OLD MAN, Caddo, LA
Built 2007 Load: 36.0 t ADT: 140
Lanier Dr
GoodOver: CANAL
LANIER DR. 0.2 OF A MILE, East Baton Rouge, LA
Built 2012 Load: 36.0 t ADT: 4,700
Central Throughway
GoodOver: ILLINOIS CENTRAL RR.
0.7 MI. N. OF US190, East Baton Rouge, LA
Built 2011 Load: 36.0 t ADT: 10,400
MARTIN MUSE RD
GoodOver: BULL BAYOU
2.0 MI N of LA 580, East Carroll, LA
Built 2010 Load: 36.0 t ADT: 75
BJ Ln.
GoodOver: BAYOU NEZPIQUE
1.47 Mi N of La 3277, Evangeline, LA
Built 2007 Load: 36.0 t ADT: 78
BIG LAKE MGT RD
GoodOver: BIG ROARING BAYOU
0.407 MI N OF LA.4, Franklin, LA
Built 2017 Load: 36.0 t ADT: 30
LA0001
GoodOver: CAMINADA BAY
9.5 MI EAST OF LA 3090, Jefferson, LA
Built 2012 Load: 36.0 t ADT: 3,305
US0165
GoodOver: BAYOU
0.4 MI N of LA 101, Jefferson Davis, LA
Built 2008 Load: 36.0 t ADT: 9,883
US0165
GoodOver: BAYOU
0.5 MI N of LA 101, Jefferson Davis, LA
Built 2008 Load: 36.0 t ADT: 8,453
LA0441
GoodOver: TICKFAW RIVER
0.1 MILES NORTH OF JCT OF, Livingston, LA
Built 2011 Load: 36.0 t ADT: 4,270
LA0514
GoodOver: GRAND BAYOU RELIEF
1.0 MI. E. OF LA 788, Red River, LA
Built 2013 Load: 36.0 t ADT: 615
LA0514
GoodOver: GRAND BAYOU
0.9 MI E. OF LA 788, Red River, LA
Built 2013 Load: 36.0 t ADT: 615
VOLPE DR
GoodOver: 20 ARPENT CANAL
0.4 MI N OF LA 39, St. Bernard, LA
Built 2015 Load: 36.0 t ADT: 220
Butler Rd
GoodOver: BRIDGE OVER SPRING CREEK
LA 449 & LA 37 1.5 WEST, St. Helena, LA
Built 1985 Load: 36.0 t ADT: 80
Little Teche Rd
GoodOver: COULEE ROUGE
0.9 Mi N of LA 31, St. Landry, LA
Built 2011 Load: 36.0 t ADT: 50
US0190
GoodOver: BAYOU COURTABLEAU W.B.
3.70 Mi W of US 71, St. Landry, LA
Built 2005 Load: 36.0 t ADT: 20,176
Whitmar Dr
GoodOver: CREEK
N OAK-WHITMAR DR. 0.1 N.E, Tangipahoa, LA
Built 1985 Load: 36.0 t ADT: 1,200
US0167
GoodOver: MIDDLE SLOUGH
1.73 MI. SOUTH OF LA 15, Union, LA
Built 2012 Load: 36.0 t ADT: 422
US0167
GoodOver: NORTH SLOUGH
1.56 MI. SOUTH OF LA 15, Union, LA
Built 2012 Load: 36.0 t ADT: 422
LA0468
GoodOver: BAYOU CASTOR RELIEF
0.62 MILES EAST OF US 171, Vernon, LA
Built 2009 Load: 36.0 t ADT: 2,896
LA0468
GoodOver: CREEK
1.04 MILES EAST OF US 171, Vernon, LA
Built 2009 Load: 36.0 t ADT: 2,896
LA0468
GoodOver: LIBERTY CREEK
2.3 MI. EAST OF US 171, Vernon, LA
Built 2010 Load: 36.0 t ADT: 2,896
LA0002
GoodOver: BODCAU BAYOU
2.13 MILES WEST OF JCT OF, Webster, LA
Built 2012 Load: 36.0 t ADT: 1,723
LA0010
GoodOver: GRANTS BAYOU
1.867 MILES WEST OF US 61, West Feliciana, LA
Built 2010 Load: 36.0 t ADT: 5,763
Pointe Noir Rd
GoodOver: Plaq Brule Bayou Relief
1.31 MI. NW. OF LA 35, Acadia, LA
Built 2015 Load: 36.3 t ADT: 240
US0190
GoodOver: BAYOU NEZPIEQUE BRIDGE
2.32 Mi E of LA 26, Acadia, LA
Built 2003 Load: 36.3 t ADT: 6,816
Welch Rd.
GoodOver: COULEE
0.2 Mi. E. of La 98, Acadia, LA
Built 1993 Load: 36.3 t ADT: 48
Tornado Rd.
GoodOver: Coulee
1.3 MI W of LA 95, Acadia, LA
Built 1998 Load: 36.3 t ADT: 144
LA0070
GoodOver: LIT BAU PIERRE PA
LA0070, Assumption, LA
Built 1960 Load: 36.3 t ADT: 6,842
LA0114
GoodOver: BAYOU DES GLAISE
0.02 MILE WEST OF LA 29, Avoyelles, LA
Built 1981 Load: 36.3 t ADT: 3,984
LA0154
GoodOver: BLACK LAKE SLOUGH
3.5 MI EAST OF LA 792, Bienville, LA
Built 1979 Load: 36.3 t ADT: 856
I0220
GoodOver: KCS RR
4.2 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 36.3 t ADT: 25,004
LA0397
GoodOver: DRAINAGE CANAL
3.4 MI. W. OF LA 27, Calcasieu, LA
Built 1991 Load: 36.3 t ADT: 543
US0065
GoodOver: CARROLL BAYOU
3.44 MI NORTH OF US 84, Concordia, LA
Built 1981 Load: 36.3 t ADT: 5,796
I0049
GoodOver: DOLET BAYOU
1.23 M S OF LA 177 INTR, De Soto, LA
Built 1988 Load: 36.3 t ADT: 16,334
Showing 9,151-9,200 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 |