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
LA0128
GoodOver: WTURKEY CREEK
2.70 MILES FROM JUNCT. LA, Franklin, LA
Built 2008 Load: 30.1 t ADT: 1,059
Myles Rd
GoodOver: SIGUR BAYOU LATERAL
1 MI. W. LA 995, Iberville, LA
Built 1984 Load: 30.1 t ADT: 30
BROOKLYN AVE
GoodOver: BAYOU FATMA
O.1 MI.N. OF LAPALCO BLVD, Jefferson, LA
Built 1970 Load: 30.1 t ADT: 3,000
LIVE OAK BLVD
GoodOver: SOUTH KENNER CANAL
3.0 M NW OF US 90, Jefferson, LA
Built 1988 Load: 30.1 t ADT: 2,000
I0012
GoodOver: TICKFAW RIVER
I0012, Livingston, LA
Built 1969 Load: 30.1 t ADT: 75,867
I0012
GoodOver: TICKFAW RIVER
I0012, Livingston, LA
Built 1969 Load: 30.1 t ADT: 44,252
US0071
GoodOver: KCS RAILROAD
2.3 MILES NORTH OF I-49, Rapides, LA
Built 2015 Load: 30.1 t ADT: 17,593
US0171
GoodOver: BAYOU SAN MIGUEL
2.68 MI. SOUTH OF LA 1218, Sabine, LA
Built 2002 Load: 30.1 t ADT: 5,192
BENJAMIN ST
GoodOver: EICKES CANAL
0.8 MI N OF LA 39, St. Bernard, LA
Built 2000 Load: 30.1 t ADT: 225
Voters Rd
GoodOver: VOTERS RD BR OVER CANAL
1.25 M N of LA 433, St. Tammany, LA
Built 2001 Load: 30.1 t ADT: 7,546
N. CSWY APPR N.B.
GoodOver: CHINCHUBA BAYOU
1.0 MI N OF CAUSEWAY N, St. Tammany, LA
Built 1954 Load: 30.1 t ADT: 16,000
N. CSWY APPR S.B.
GoodOver: CHINCHUBA BAYOU
1.0 MI N CAUSEWAY N APPR., St. Tammany, LA
Built 1954 Load: 30.1 t ADT: 16,000
LA0445
GoodOver: WASHLEY BRANCH
5.71 MI N OF US 190, Tangipahoa, LA
Built 2017 Load: 30.1 t ADT: 8,876
LA0605
GoodOver: DRAIN
0.50 MILES FROM THE JUNCT, Tensas, LA
Built 2008 Load: 30.1 t ADT: 499
LA0605
GoodOver: DEBUSSY BAYOU
0.93 MI FROM JUNCTION OF, Tensas, LA
Built 2011 Load: 30.1 t ADT: 236
DANIEL RD
GoodOver: LITTLE BAYOU DELOUTRE
2.9 MI NW of LA 549, Union, LA
Built 2001 Load: 30.1 t ADT: 100
Manchac Acres Rd
GoodOver: Muddy Cr
0.5 Mi. N. of LA 42, Ascension, LA
Built 2022 Load: 30.5 t ADT: 1,139
LA0126
GoodOver: CREEK
1.3 MI SOUTH OF LA 849, Caldwell, LA
Built 2004 Load: 30.5 t ADT: 1,092
LA0913
GoodOver: BLACK BAYOU
0.29 M N of LA 8, Catahoula, LA
Built 2001 Load: 30.5 t ADT: 514
LA0913
GoodOver: CREEK
0.77 M N of LA 8, Catahoula, LA
Built 2001 Load: 30.5 t ADT: 514
LA0909
GoodOver: SIX MILE BAYOU
3.1 MI SOUTH OF LA 126, Concordia, LA
Built 2003 Load: 30.5 t ADT: 68
LA0128
GoodOver: LITTLE TURKEY CREEK
.7 MI WEST OF LA 876, Franklin, LA
Built 2003 Load: 30.5 t ADT: 1,059
Gendarme Rd
GoodOver: Bayou Carencro
2.6 Mi. SW OF LA 182, Lafayette, LA
Built 2022 Load: 30.5 t ADT: 380
LA0126
GoodOver: CREEK
0.8 MI NORTH OF LA 124, LaSalle, LA
Built 2003 Load: 30.5 t ADT: 117
LA0127
GoodOver: CREEK
1.2 MI NORTH OF LA 460, LaSalle, LA
Built 2001 Load: 30.5 t ADT: 2,211
SAM HEAD RD
GoodOver: CR
0.77 MI S of LA 34, Ouachita, LA
Built 2010 Load: 30.5 t ADT: 100
US0190
GoodOver: BAYOU GROSSE TETE
0.02 Mi W LA 78, Pointe Coupee, LA
Built 2012 Load: 30.5 t ADT: 13,660
LENA DR
GoodOver: 20 ARPENT CANAL
0.51 MI N OF LA 39, St. Bernard, LA
Built 2015 Load: 30.5 t ADT: 200
LA0010
GoodOver: BIG CREEK
.5 MI WEST OF LA 1054, Tangipahoa, LA
Built 2006 Load: 30.5 t ADT: 3,768
LA1054
GoodOver: TANGIPAHOA RIVER
1.48 MILES EAST OF JCT US, Tangipahoa, LA
Built 2008 Load: 30.5 t ADT: 1,235
N. Oak St
GoodOver: CREEK
4 MI NE OF RT 190 EXIT, Tangipahoa, LA
Built 1998 Load: 30.5 t ADT: 2,090
LA0573
GoodOver: MUDDY BAYOU
0.05 M W of LA 3044, Tensas, LA
Built 2003 Load: 30.5 t ADT: 16
Lawrence Cr Rd
GoodOver: Drain
.78 mi E. of LA 430, Washington, LA
Built 2019 Load: 30.5 t ADT: 520
Janesville Rd
GoodOver: TIGER BAYOU
0.7 MI S of LA 586, West Carroll, LA
Built 2000 Load: 30.5 t ADT: 320
4 Mile Bayou Rd
GoodOver: Hog Bayou
7.3 MI N. Of LA 70, St. Martin, LA
Built 2023 Load: 30.6 t ADT: 422
Evangeline Rd
GoodOver: Cocodrie Bayou
1 Mi S OF Agate Rd, Evangeline, LA
Built 2022 Load: 30.7 t ADT: 45
CADEVILLE LODGE RD
GoodOver: GUYTON CREEK
0.20 MI. E. OF LA 183, Ouachita, LA
Built 2019 Load: 30.7 t ADT: 315
RICHWOOD RD #2
GoodOver: LTI CREEK
0.5 MILES WEST OF US 165, Ouachita, LA
Built 2015 Load: 30.7 t ADT: 3,111
Chestnut Rd
GoodOver: COULEE
0.4 MI. W OF La 708, Vermilion, LA
Built 2011 Load: 30.7 t ADT: 160
Churchpoint Rd
GoodOver: BAYOU NARCISSE
0.7 MI SE US61, LA44 JCT, Ascension, LA
Built 2000 Load: 30.8 t ADT: 1,200
LA0107
GoodOver: RED RIVER
1.24 M. N. OF JCT. LA 453, Avoyelles, LA
Built 2000 Load: 30.8 t ADT: 3,354
SOUTHERN LOOP
GoodOver: TRIB TO BOGGY BAYOU
0.15 MILES EAST OF LINWOO, Caddo, LA
Built 2009 Load: 30.8 t ADT: 6,000
CLYDE FANT PKWY NB
GoodOver: PRESTON AVE
0.75 MI SOUTH OF LA 3032, Caddo, LA
Built 1987 Load: 30.8 t ADT: 11,190
I0210
GoodOver: HOLLYHILL RD
1.3 MI W OF LA 3856, Calcasieu, LA
Built 1964 Load: 30.8 t ADT: 608
Valley St
GoodOver: DAWSON CREEK
0.2 MI N OF LA 427, East Baton Rouge, LA
Built 2000 Load: 30.8 t ADT: 6,469
Elm Dr
GoodOver: HURRICANE CREEK
BATON ROUGE, ELM DRIVE, East Baton Rouge, LA
Built 2002 Load: 30.8 t ADT: 300
Matthews St
GoodOver: ROBERTS CANAL
MATTHEWS STREET, East Baton Rouge, LA
Built 1996 Load: 30.8 t ADT: 500
Gahn Rd
GoodOver: GRAND LOUIS BAYOU
0.27 Mi E of La 3149, Evangeline, LA
Built 2012 Load: 30.8 t ADT: 33
Meade Rd
GoodOver: MEADE CREEK
2.04 M. S. OF US 71, Grant, LA
Built 2005 Load: 30.8 t ADT: 36
Jefferson Island
GoodOver: Parc Perdu Bayou
3.3 Mi. W. Of US 90, Iberia, LA
Built 1960 Load: 30.8 t ADT: 2,868
Showing 7,651-7,700 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 |