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
Spanish Trail
GoodOver: Bayou Bourbeaux
0.1 MI W of I-49 Frontage, St. Landry, LA
Built 2007 Load: 40.5 t ADT: 25
INDEPENDENCE AVE
GoodOver: CANAL
ON INDEPENDENCE AVENUE 0., St. Tammany, LA
Built 2016 Load: 40.5 t ADT: 1,000
Million Dollar Rd
GoodOver: BOGUE FALAYA RIVER REL
0.2 MILES EAST OF LA 25, St. Tammany, LA
Built 1990 Load: 40.5 t ADT: 1,768
Quick Blvd.
GoodOver: CREEK
1.0 MI N/W JCT I55&3234, Tangipahoa, LA
Built 2007 Load: 40.5 t ADT: 174
LA0008
GoodOver: JURDON-CREEK
1.2 MI EAST OF LA 464, Vernon, LA
Built 1977 Load: 40.5 t ADT: 2,687
CHARLIE ARCENEAUX
GoodOver: WIKOFF BAYOU
1.3 Mi. NW of LA 98, Acadia, LA
Built 2016 Load: 40.8 t ADT: 48
GREEN OAK RD
GoodOver: STREAM
1.3 MI. NORTH OF US 165, Allen, LA
Built 2013 Load: 40.8 t ADT: 900
GREEN OAK RD
GoodOver: CREEK
0.6 MI N of US 165, Allen, LA
Built 2011 Load: 40.8 t ADT: 859
LA0010
GoodOver: CALCASIEU RIVER
0.8 MI. E OF INT LA3205, Allen, LA
Built 1982 Load: 40.8 t ADT: 4,806
US0061
GoodOver: CONWAY BAYOU
5 MI S. LA 22 (N B LANE), Ascension, LA
Built 1981 Load: 40.8 t ADT: 14,957
US0061
GoodOver: AIRLINE DRAINAGE CANAL
3.2 MI S LA 22 (NB LANE), Ascension, LA
Built 1981 Load: 40.8 t ADT: 14,957
US0061
GoodOver: AIRLINE DRAINAGE CANAL
1.7 MI S LA 22 (NB LANE), Ascension, LA
Built 1981 Load: 40.8 t ADT: 14,957
US0061
GoodOver: AIRLINE DRAINAGE CANAL
1.0 MI S LA 22 (NB LANE), Ascension, LA
Built 1981 Load: 40.8 t ADT: 14,957
LA0001
GoodOver: ROCKY CANAL
5.0 MI S OF D'VILLE, Ascension, LA
Built 1983 Load: 40.8 t ADT: 7,858
LA0030
GoodOver: NEW RIVER
LA0030, Ascension, LA
Built 1968 Load: 40.8 t ADT: 12,126
LA3089
GoodOver: BAYOU LAFOURCHE
LA 3089 @ BAYOU LAFOURCHE, Ascension, LA
Built 2001 Load: 40.8 t ADT: 17,685
LA0001
GoodOver: CHOCTAW BAYOU
0.74 MI. SOUTH OF LA 1194, Avoyelles, LA
Built 1982 Load: 40.8 t ADT: 6,559
LA0029
GoodOver: BAYOU ROUGE
0.01 MILE EAST OF LA 1178, Avoyelles, LA
Built 1987 Load: 40.8 t ADT: 3,490
OLD RIVER RD
GoodOver: CANEY CREEK
1.9 MI S OF LA 389, Beauregard, LA
Built 2014 Load: 40.8 t ADT: 70
US0080
GoodOver: FLAT RIVER
1.8 MI EAST OF LA 782-2, Bossier, LA
Built 2003 Load: 40.8 t ADT: 15,627
US0080
GoodOver: FLAT RIVER
1.8 MI EAST OF LA 782-2, Bossier, LA
Built 2003 Load: 40.8 t ADT: 2,376
US0071
GoodOver: FLAG BRANCH
6.6 MI NORTH OF LA 2, Caddo, LA
Built 1981 Load: 40.8 t ADT: 349
LA0001
GoodOver: MILL CREEK
4.0 MI NORTH OF LA 170, Caddo, LA
Built 1986 Load: 40.8 t ADT: 2,836
LA0001
GoodOver: STATE LINE CREEK
1.7 MI NORTH OF LA 168, Caddo, LA
Built 1986 Load: 40.8 t ADT: 650
LA0126
GoodOver: RICHLAND CREEK
1.67 M W of LA 3239, Caldwell, LA
Built 1985 Load: 40.8 t ADT: 904
LA0846
GoodOver: LOST CREEK RELIEF
1.43 M W of LA 4, Caldwell, LA
Built 1983 Load: 40.8 t ADT: 205
LA0846
GoodOver: LOST CREEK
1.78 M W of LA 4, Caldwell, LA
Built 1983 Load: 40.8 t ADT: 205
LA0846
GoodOver: CREEK
3.3 MI W OF LA 4, Caldwell, LA
Built 1984 Load: 40.8 t ADT: 205
LA0846
GoodOver: CREEK
5.0 MI W OF LA 4, Caldwell, LA
Built 1984 Load: 40.8 t ADT: 205
LA0129
GoodOver: BOGGY BAYOU
3.4 MI NORTH OF LA 565, Concordia, LA
Built 1983 Load: 40.8 t ADT: 1,684
LA0903
GoodOver: BLACK BAYOU
1.36 MI WEST OF US 65, Concordia, LA
Built 1996 Load: 40.8 t ADT: 2,031
US0084
GoodOver: MUNDY BAYOU
0.17 MI WEST OF I-49, De Soto, LA
Built 1986 Load: 40.8 t ADT: 4,563
US0084
GoodOver: MUNDY BAYOU
0.17 MI WEST OF I-49, De Soto, LA
Built 1985 Load: 40.8 t ADT: 5,350
I0049
GoodOver: DOLET BAYOU
1.24 M S OF LA 177 INTR, De Soto, LA
Built 1988 Load: 40.8 t ADT: 28,142
S. Flannery Rd
GoodOver: LIVELY BAYOU
0.1 MILES SOUTH OF US 190, East Baton Rouge, LA
Built 2010 Load: 40.8 t ADT: 12,192
LA0408
GoodOver: BLACKWATER BAYOU
3.5 M E of LA 67&LA 408, East Baton Rouge, LA
Built 1984 Load: 40.8 t ADT: 19,515
Burbank Dr.
GoodOver: ELBOW BAYOU
1.4 M E of LA 42&LA 327-S, East Baton Rouge, LA
Built 1981 Load: 40.8 t ADT: 26,100
Core Ln
GoodOver: BLACKWATER BAYOU
0.7 Mi E of LA 410, East Baton Rouge, LA
Built 2002 Load: 40.8 t ADT: 2,278
Mahoney Rd
GoodOver: MILL CREEK
1.8 MI. NE OF PRIDE, East Baton Rouge, LA
Built 2002 Load: 40.8 t ADT: 1,173
US0065
GoodOver: OTTER BAYOU
6.9 MI NORTH OF LA 580, East Carroll, LA
Built 1985 Load: 40.8 t ADT: 3,046
LA0134
GoodOver: TENSAS BAYOU
3.0 MI NORTH OF LA 882, East Carroll, LA
Built 1985 Load: 40.8 t ADT: 437
LA0582
GoodOver: BAXTER BAYOU
5.67 MI WEST OF LA 134, East Carroll, LA
Built 1983 Load: 40.8 t ADT: 593
LA0582
GoodOver: CANEY BAYOU
2.01 MI WEST OF LA 134, East Carroll, LA
Built 1983 Load: 40.8 t ADT: 593
LA0582
GoodOver: MID-SLOUGH BAYOU
.87 MI WEST OF LA 134, East Carroll, LA
Built 1983 Load: 40.8 t ADT: 593
LA0582
GoodOver: TENSAS BAYOU
.58 MI WEST OF LA 134, East Carroll, LA
Built 1983 Load: 40.8 t ADT: 593
LA0067
GoodOver: WW DUNN CREEK
LA0067, East Feliciana, LA
Built 1978 Load: 40.8 t ADT: 2,927
US0167
GoodOver: BAYOU JOE MORCEL
0.55 Mi E of La 3097, Evangeline, LA
Built 1994 Load: 40.8 t ADT: 11,126
I0049
GoodOver: DRAINAGE CANAL
3.8 MI SOUTH LA 106, Evangeline, LA
Built 1986 Load: 40.8 t ADT: 9,158
LA1160
GoodOver: DRAINAGE CANAL
.6 M WEST OF LA 13, Evangeline, LA
Built 1993 Load: 40.8 t ADT: 2,000
LA0376
GoodOver: BAYOU NEZPIQUE
6.9 MI WEST OF LA 13, Evangeline, LA
Built 1994 Load: 40.8 t ADT: 104
Showing 10,001-10,050 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 |