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
LA0010
FairOver: TCHEFUNCTE RIVER
1 MILE WEST OF LA 450, Washington, LA
Built 2012 Load: 40.2 t ADT: 1,333
Penal Farm Rd
FairOver: COOLEY BRANCH
0.4M EAST OF LA 7, Webster, LA
Built 1992 Load: 40.2 t ADT: 1,294
Prince Rd
FairOver: BIG COLEWA BAYOU
1.8 MI E of LA 585, West Carroll, LA
Built 1992 Load: 40.2 t ADT: 376
New River Canal Rd
FairOver: DRAINAGE BAYOU
1.3 MI. S. DUTCHTOWN, Ascension, LA
Built 2001 Load: 40.5 t ADT: 100
TROUSDALE RD
FairOver: BAYOU VERDINE
0.8 MI N of US 90, Calcasieu, LA
Built 1996 Load: 40.5 t ADT: 2,938
US 167
FairOver: CREEK
1.0 Mi. N. of LA 148, Jackson, LA
Built 2008 Load: 40.5 t ADT: 8,681
Fire Tower Rd
FairOver: NEAR CREEK
0.6 MI. S. OF HWY. 2, Webster, LA
Built 1985 Load: 40.5 t ADT: 525
Fire Tower Rd
FairOver: INDIAN CREEK
0.5 MI. S. OF HWY. 2, Webster, LA
Built 1985 Load: 40.5 t ADT: 525
Fire Tower Rd
FairOver: INDIAN CREEK
0.4 MI. S. OF HWY 2, Webster, LA
Built 1985 Load: 40.5 t ADT: 525
Skinner Ln
FairOver: LYON BAYOU
1.0 MI W of LA 589, West Carroll, LA
Built 1990 Load: 40.5 t ADT: 951
LA0095
FairOver: DRAINAGE CANAL
2.82 MI NORTH OF LA 35, Acadia, LA
Built 1984 Load: 40.8 t ADT: 1,664
LA1101
FairOver: BAYOU WIKOFF
1.7 Mi NW of LA 98, Acadia, LA
Built 1984 Load: 40.8 t ADT: 180
LA0026
FairOver: WEST RELIEF
4.4 M W of US 165, Allen, LA
Built 1979 Load: 40.8 t ADT: 2,113
LA0026
FairOver: MIDDLE RELIEF
4.1 M W of US 165, Allen, LA
Built 1979 Load: 40.8 t ADT: 2,113
LA0026
FairOver: CALCASIEU RIVER
13.14 MI. E OF INT LA377, Allen, LA
Built 1979 Load: 40.8 t ADT: 2,113
LA0010
FairOver: CREEK
1.7 MI. E OF LA 3205, Allen, LA
Built 1987 Load: 40.8 t ADT: 4,806
LA0044
FairOver: BAYOU NARCISSE
700 FT. N. JCT. US 61, Ascension, LA
Built 1985 Load: 40.8 t ADT: 17,577
LA0044
FairOver: BAYOU CALBASSE
500 FT. S. JCT. LA 621, Ascension, LA
Built 1985 Load: 40.8 t ADT: 17,577
LA0022
FairOver: BAYOU CONWAY
0.1 M NORTH I-10 & LA 22, Ascension, LA
Built 1990 Load: 40.8 t ADT: 17,134
LA0070
FairOver: BAYOU VERRETTE
0.2 M E of LA 70&LA 3120, Ascension, LA
Built 1964 Load: 40.8 t ADT: 15,589
LA0070
FairOver: DRAIN
2.0 M NE of LA 1&LA 70, Assumption, LA
Built 1973 Load: 40.8 t ADT: 3,881
LA0070
FairOver: DRAIN
2.0 M NE of LA 1&LA 70, Assumption, LA
Built 1972 Load: 40.8 t ADT: 6,289
I0049
FairOver: ACADIANA RAILWAY
2.23 MI NORTH LA.106, Avoyelles, LA
Built 1986 Load: 40.8 t ADT: 10,352
LA0026
FairOver: BUNDICK'S CREEK
0.8 MI E OF US 171, Beauregard, LA
Built 1984 Load: 40.8 t ADT: 4,012
LA0026
FairOver: CREEK
4.1 MI W OF LA 1147, Beauregard, LA
Built 1984 Load: 40.8 t ADT: 2,585
LA0026
FairOver: SPRING CREEK
6.9 MI E OF US 171, Beauregard, LA
Built 1984 Load: 40.8 t ADT: 2,585
US0080
FairOver: BEAR CREEK
1.0 MI SOUTH OF I-20, Bienville, LA
Built 1984 Load: 40.8 t ADT: 780
US0080
FairOver: LEATHERMAN CREEK
4.0 MI SOUTH OF I-20, Bienville, LA
Built 1984 Load: 40.8 t ADT: 780
US0080
FairOver: BRINSON CREEK
4.8 MI SOUTH OF I-20, Bienville, LA
Built 1984 Load: 40.8 t ADT: 780
US0080
FairOver: BLACK LAKE CREEK
5.2 MI SOUTH OF I-20, Bienville, LA
Built 1984 Load: 40.8 t ADT: 780
LA0004
FairOver: BLACK LAKE BAYOU
6.3 MI EAST OF LA 154, Bienville, LA
Built 1982 Load: 40.8 t ADT: 1,087
LA0004
FairOver: BLACK LAKE BAYOU RELIEF
6.7 MI EAST OF LA 154, Bienville, LA
Built 1982 Load: 40.8 t ADT: 1,087
LA0004
FairOver: SLOUGH BRIDGE
7.0 MI EAST OF LA 154, Bienville, LA
Built 1982 Load: 40.8 t ADT: 1,087
LA0507
FairOver: KEPLER CREEK
2.9 MI EAST OF LA 154, Bienville, LA
Built 1986 Load: 40.8 t ADT: 396
LA0507
FairOver: SALINE BAYOU
1.0 MILE EAST OF LA HWY 9, Bienville, LA
Built 1986 Load: 40.8 t ADT: 540
LA0793
FairOver: CROWS CREEK
2.0 MI WEST OF LA 794, Bienville, LA
Built 1986 Load: 40.8 t ADT: 125
US0080
FairOver: RED CHUTE BAYOU
0.50 MI EAST OF I-220, Bossier, LA
Built 2003 Load: 40.8 t ADT: 15,627
US0080
FairOver: RED CHUTE BAYOU
0.50 MI EAST OF I-220, Bossier, LA
Built 2003 Load: 40.8 t ADT: 2,376
I0020
FairOver: BARKSDALE BLVD ON RAMP
2.4 MI W OF LA 3105, Bossier, LA
Built 1966 Load: 40.8 t ADT: 15,642
I0020
FairOver: MACKS BAYOU
0.1 MI S OF I-20, Bossier, LA
Built 2007 Load: 40.8 t ADT: 23,105
US0171
FairOver: CYPRESS BAYOU
5.2 M N OF LA 3276, Caddo, LA
Built 1976 Load: 40.8 t ADT: 5,850
LA0002
FairOver: HAROLD CREEK
1.75 MI WEST OF LA 1, Caddo, LA
Built 1987 Load: 40.8 t ADT: 1,464
LA0169
FairOver: CROSS BAYOU BRIDGE
1.75 MI NORTH OF I-20, Caddo, LA
Built 1982 Load: 40.8 t ADT: 2,397
LA0169
FairOver: CREEK BRIDGE
1.42 MI N OF I-20, Caddo, LA
Built 1982 Load: 40.8 t ADT: 2,004
LA0001
FairOver: DRAIN
.3 MI NORTH OF LA 526, Caddo, LA
Built 1968 Load: 40.8 t ADT: 16,911
LA0169
FairOver: CREEK BRIDGE
3.9 MI S OF US 80, Caddo, LA
Built 1982 Load: 40.8 t ADT: 2,002
LA0169
FairOver: N. FORK BOGGY BAYOU
4.3 MI S OF US 80, Caddo, LA
Built 1982 Load: 40.8 t ADT: 1,909
LA0169
FairOver: CREEK
.2 NORTH OF LA 789, Caddo, LA
Built 1993 Load: 40.8 t ADT: 1,540
LA0169
FairOver: JOHNSON BRANCH
0.77M NORTH OF LA 789, Caddo, LA
Built 1993 Load: 40.8 t ADT: 1,540
PERKINS ST
FairOver: BUXTON CREEK
0.3 MI N of LA 12, Calcasieu, LA
Built 2015 Load: 40.8 t ADT: 1,350
Showing 5,651-5,700 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 |