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
Hooper Rd
FairOver: HORSEPEN CREEK RELIEF
2.32 M. N. OF B. MILLER R, Rapides, LA
Built 1984 Load: 53.8 t ADT: 250
E John Templet Rd
FairOver: NEW RIVER CANAL
0.01 MI. N OF LA 429, Ascension, LA
Built 2001 Load: 54.4 t ADT: 25
George Lambert Rd
FairOver: BLACK BAYOU
0.5 M N OF LA 429, Ascension, LA
Built 2000 Load: 54.4 t ADT: 300
Denham Rd
FairOver: NEW RIVER CANAL
1.4 MI. N-LA30 US61 JCT., Ascension, LA
Built 2000 Load: 54.4 t ADT: 100
River Highlands Dr
FairOver: BAYOU PIERRE
1.1 MI. SE. OF LA 22, Ascension, LA
Built 1998 Load: 54.4 t ADT: 100
Cannon Rd
FairOver: BAYOU BLACK
1.6 ME. NE LA44,US61 JCT., Ascension, LA
Built 2000 Load: 54.4 t ADT: 200
I0110
FairOver: NORTH ST. OFF RAMP (N.B.
I0110, East Baton Rouge, LA
Built 1963 Load: 54.4 t ADT: 3,692
MARTIN MUSE RD
FairOver: MAIDEN DOE BAYOU
0.1 MI N of LA 580, East Carroll, LA
Built 2001 Load: 54.4 t ADT: 100
US0090
FairOver: DUBOIN CANAL
0.40 Mi E of LA 83, Iberia, LA
Built 1969 Load: 54.4 t ADT: 22,993
PROSPECT RD
FairOver: UNNAMED CREEK
APP. 2.5 MI. E. OF LA 191, Sabine, LA
Built 1984 Load: 54.4 t ADT: 130
LA0041
FairOver: DRAIN
2.1 M N OF LA 435, St. Tammany, LA
Built 1972 Load: 54.4 t ADT: 3,043
I0055
FairOver: ICG RAILROAD
I0055, Tangipahoa, LA
Built 1968 Load: 54.4 t ADT: 36,311
I0010
FairOver: RAMP
0.37 M E of LA 1, West Baton Rouge, LA
Built 1968 Load: 54.4 t ADT: 7,586
Kenilworth Pkwy
FairOver: DAWSON CREEK
0.5 M SW OF LA 427, East Baton Rouge, LA
Built 1973 Load: 55.1 t ADT: 5,042
LA0145
FairOver: CREEK
0.06 M N OF LA 821, Lincoln, LA
Built 2018 Load: 55.1 t ADT: 1,347
US0080
FairOver: DRAIN
0.14 MI EAST OF LA 169, Caddo, LA
Built 1986 Load: 55.3 t ADT: 11,342
LA0389
FairOver: BUXTON CREEK
2.9 MI NORTH OF LA 12, Calcasieu, LA
Built 1993 Load: 55.3 t ADT: 1,858
I0110
FairOver: FLA. ST. OFF RAMP
I0110, East Baton Rouge, LA
Built 1963 Load: 55.3 t ADT: 8,250
US0090
FairOver: SEGURA BRANCH
3.10 Mi SE of LA 88, Iberia, LA
Built 1965 Load: 55.3 t ADT: 29,549
US0090
FairOver: SEGURA BRANCH
1.42 Mi NW of LA 675, Iberia, LA
Built 1965 Load: 55.3 t ADT: 10,090
US0090
FairOver: ARMENCO CANAL
0.6 Mi E of La 675, Iberia, LA
Built 1965 Load: 55.3 t ADT: 30,572
US0090
FairOver: ARMENCO CANAL
1.3 Mi W of La 14, Iberia, LA
Built 1965 Load: 55.3 t ADT: 10,090
LA0424
FairOver: WEST FORK CREEK
1.7 MI WEST JCT. LA 62, Washington, LA
Built 1995 Load: 55.3 t ADT: 1,873
COLUMBIA H.RD
FairOver: HAGGERTY Creek
.506M N of Sherwood Rd, Catahoula, LA
Built 1984 Load: 55.4 t ADT: 90
LA0004
FairOver: CARTER BRANCH
6.78 MI NE JCT US 71, Bienville, LA
Built 1983 Load: 55.7 t ADT: 1,270
Brook Dr.
FairOver: PINE POINT GULLY
0.62 Mi N of La 104, Evangeline, LA
Built 1980 Load: 55.7 t ADT: 97
Big Creek Rd
FairOver: Big Creek
00.50 Mi E of La 563, Lincoln, LA
Built 2019 Load: 55.7 t ADT: 250
Palmisano Blvd
FairOver: 20 Arpent Canal
0.3 Mi. N. of La 39, St. Bernard, LA
Built 2017 Load: 55.7 t ADT: 400
I0010
FairOver: DRAIN
2.5 M N of I-10&LA 73, Ascension, LA
Built 1975 Load: 56.1 t ADT: 25,735
LA0384
FairOver: GUY BAYOU
4.5 MI SW OF LA 1138-2, Calcasieu, LA
Built 1992 Load: 56.2 t ADT: 4,593
LA0513
FairOver: CREEK
12.65 M. N. OF LA 483, De Soto, LA
Built 1992 Load: 56.2 t ADT: 243
LA0038
FairOver: HAY'S CREEK
3.0 MI EAST LA 25 INTER., Washington, LA
Built 1996 Load: 56.2 t ADT: 1,706
LA0060
FairOver: MILLER CREEK
2.8M EAST INT LA 16/ENON, Washington, LA
Built 1993 Load: 56.2 t ADT: 704
LA0159
FairOver: MILE CREEK
1.18 MI NORTH OF LA 79, Webster, LA
Built 1987 Load: 56.2 t ADT: 3,310
LA 0027
FairOver: Little Bayou D'INDE
1.21 MI N of LA 108, Calcasieu, LA
Built 2021 Load: 56.4 t ADT: 19,872
Punkin Center Rd
FairOver: TOPY CREEK
3.0 MI. EAST OF LA 153, Bienville, LA
Built 1986 Load: 56.7 t ADT: 120
Ian Johnson Rd
FairOver: LITTLE INDIAN CREEK
0.95 MI. SW OF LA 28, Rapides, LA
Built 1992 Load: 56.7 t ADT: 50
LA0101
FairOver: GULLY
1.4 MI N of LA 14, Calcasieu, LA
Built 1983 Load: 57.0 t ADT: 3,166
Everglades Rd
FairOver: Little Bayou Boeuf Drain
0.8 Mi. E. of JCT LA 139, Morehouse, LA
Built 2018 Load: 57.0 t ADT: 24
LA0796
FairOver: DUKEDALL CREEK
0.23 MI E OF LA 508, Bienville, LA
Built 1989 Load: 57.2 t ADT: 472
LA0130
FairOver: WEST TURKEY CREEK
1.80 M W of LA 618, Franklin, LA
Built 1986 Load: 57.2 t ADT: 7,372
LA0724
FairOver: Le Des Cannes Coulee
1.3 MI WEST OF US 167, Lafayette, LA
Built 1994 Load: 57.2 t ADT: 5,608
LA0308
FairOver: L VALLEY CANAL
0.4M EAST OF LA 648, Lafourche, LA
Built 1992 Load: 57.2 t ADT: 5,050
LA0480
FairOver: NICHOLAS CREEK
0.75 M SOUTH OF US 84, Red River, LA
Built 1991 Load: 57.2 t ADT: 2,011
PARISH FARM RD
FairOver: DRY FORK CREEK
0.1 MI E of US 425, Richland, LA
Built 2005 Load: 57.2 t ADT: 100
LA0435
FairOver: BEEF BRANCH
LA 435 LOG MI 3.49, St. Tammany, LA
Built 1988 Load: 57.2 t ADT: 4,200
LA0464
FairOver: CANEY CREEK
.69 MILES SOUTH OF LA 8, Vernon, LA
Built 1987 Load: 57.2 t ADT: 856
LA0010
FairOver: STEVENS BRANCH
2.0 MILES EAST OF LA 450, Washington, LA
Built 1990 Load: 57.2 t ADT: 1,478
LA0010
FairOver: GORMAN CREEK
3.5 M EAST OF LA 450, Washington, LA
Built 1991 Load: 57.2 t ADT: 1,478
LA0164
FairOver: BOONE CREEK
2.13 M EAST OF HWY 163, Webster, LA
Built 1991 Load: 57.2 t ADT: 3,472
Showing 6,401-6,450 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 |