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
SCALES RD
GoodOver: BALFOUR CREEK
1.6 MI SE of US 425, Richland, LA
Built 2005 Load: 32.4 t ADT: 200
US0171
GoodOver: LEWIS CREEK RELIEF
2.6 MI N OF LA 175, Sabine, LA
Built 2005 Load: 32.4 t ADT: 4,790
US0171
GoodOver: CREEK
0.49 MI. SOUTH OF LA 474, Sabine, LA
Built 2004 Load: 32.4 t ADT: 3,811
US0171
GoodOver: LEWIS CREEK RELIEF
2.7 MI. NORTH OF LA 175, Sabine, LA
Built 1990 Load: 32.4 t ADT: 3,273
US0171
GoodOver: CASTOR BAYOU
3.83 MI. NORTH OF LA 483, Sabine, LA
Built 2006 Load: 32.4 t ADT: 4,790
US0171
GoodOver: BAYOU ESTES
5.48 MI. NORTH OF LA 483, Sabine, LA
Built 1990 Load: 32.4 t ADT: 4,249
US0171
GoodOver: DRAIN
3.2 MI. NORTH OF LA 174, Sabine, LA
Built 2006 Load: 32.4 t ADT: 5,228
LA0006
GoodOver: DITCH
4.2 MI EAST OF LA 476, Sabine, LA
Built 1950 Load: 32.4 t ADT: 6,363
LA0006
GoodOver: BAYOU PEDRO
1.68 M E OF E JCT LA 3118, Sabine, LA
Built 1966 Load: 32.4 t ADT: 5,031
LA0473
GoodOver: AUTHUR CREEK RELIEF
.7 MI EAST OF LA 191, Sabine, LA
Built 1986 Load: 32.4 t ADT: 738
LA0473
GoodOver: LAKE CREEK RELIEF
5.05 MI EAST HWY 191 TORO, Sabine, LA
Built 1986 Load: 32.4 t ADT: 738
LA0191
GoodOver: CARTER-CREEK
.6 MI NORTH OF LA 476, Sabine, LA
Built 1976 Load: 32.4 t ADT: 1,650
PLAINVIEW RD
GoodOver: MIDKIFF CREEK
0.03 MI. EAST OF US 171, Sabine, LA
Built 2001 Load: 32.4 t ADT: 910
ANTHONY RD
GoodOver: DRY CREEK
ANTHONY ROAD, Sabine, LA
Built 1986 Load: 32.4 t ADT: 130
US0090
GoodOver: DRAIN DITCH
1 MILE WEST OF DAVIS POND, St. Charles, LA
Built 1999 Load: 32.4 t ADT: 49,920
US0090
GoodOver: DAVIS POND DIVERSION
3.0 MI EAST OF LA 632, St. Charles, LA
Built 2002 Load: 32.4 t ADT: 49,920
US0061
GoodOver: CONC BOX XING
3.6 MI WEST OF JEFFERSON, St. Charles, LA
Built 1942 Load: 32.4 t ADT: 23,719
US0061
GoodOver: CONC BOX XING
4.4 MI WEST OF JEFFERSON, St. Charles, LA
Built 1942 Load: 32.4 t ADT: 23,719
US0061
GoodOver: CONC BOX XING
4.9 MI WEST OF JEFFERSON, St. Charles, LA
Built 1942 Load: 32.4 t ADT: 23,719
US0061
GoodOver: CONC BOX XING
5.2 MI WEST OF JEFFERSON, St. Charles, LA
Built 1942 Load: 32.4 t ADT: 23,719
McDaniel Rd
GoodOver: KILLIAN BRANCH CREEK
2.1 MILES WEST LA 16, St. Helena, LA
Built 2010 Load: 32.4 t ADT: 350
Shiloh Baptist Rd
GoodOver: CREEK
2.4 MILES NORTH OF LA 43, St. Helena, LA
Built 2009 Load: 32.4 t ADT: 75
LA1042
GoodOver: Ditch
5.4 Mi W of La 37, St. Helena, LA
Built 2020 Load: 32.4 t ADT: 1,316
LA0037
GoodOver: CANAL
1.0M NORTH OF LA 63 INT, St. Helena, LA
Built 1955 Load: 32.4 t ADT: 1,241
LA0037
GoodOver: CREEK
3.3 M NE OF LA 63, St. Helena, LA
Built 1955 Load: 32.4 t ADT: 631
LA0038
GoodOver: DRAIN
5.11 MI E JCT LA10 & LA38, St. Helena, LA
Built 2003 Load: 32.4 t ADT: 933
LA3188
GoodOver: DRAIN
1.45 MI. NO. U.S. 61, St. John the Baptist, LA
Built 1983 Load: 32.4 t ADT: 6,064
LA0035
GoodOver: DRAINAGE CANAL
2 Mi. S. of LA 358, St. Landry, LA
Built 2009 Load: 32.4 t ADT: 1,352
LA0035
GoodOver: DRAINAGE CANAL
1.2 Mi. S. of LA 740, St. Landry, LA
Built 2009 Load: 32.4 t ADT: 1,790
Judson Walsh Drive
GoodOver: Rawles Bayou
.01 Mi West of I-49, St. Landry, LA
Built 2020 Load: 32.4 t ADT: 5,500
US0071
GoodOver: SANDY BAYOU
6.50 MI S of LA 10, St. Landry, LA
Built 2002 Load: 32.4 t ADT: 1,695
US0190
GoodOver: BAYOU MALLET
1.1 MI EAST OF LA 103, St. Landry, LA
Built 1931 Load: 32.4 t ADT: 4,319
US0190
GoodOver: BAYOU FORK
2.3 MI EAST OF LA 35, St. Landry, LA
Built 1931 Load: 32.4 t ADT: 11,913
US0190
GoodOver: BOAGNI SWAMP
1.1 MI EAST OF I-49, St. Landry, LA
Built 1951 Load: 32.4 t ADT: 21,716
US0190
GoodOver: BAYOU TOULOUSE
0.05 Mi W of LA 742, St. Landry, LA
Built 1951 Load: 32.4 t ADT: 20,498
LA0182
GoodOver: DRAINAGE DITCH
0.1 MI WEST OF I-49, St. Landry, LA
Built 1992 Load: 32.4 t ADT: 16,573
I-49 Frontage
GoodOver: DRAINAGE DITCH
0.1 MI North of LA 182, St. Landry, LA
Built 1992 Load: 32.4 t ADT: 2,967
I-49 SB FrontageRd
GoodOver: DRAINAGE DITCH
0.1 MI South of LA 182, St. Landry, LA
Built 1992 Load: 32.4 t ADT: 2,967
LA0013
GoodOver: DRAINAGE CANAL
1.6 Mi. North of LA 29, St. Landry, LA
Built 1966 Load: 32.4 t ADT: 4,950
US0167
GoodOver: BAYOU BELLEVIEW
1.2 MI EAST OF LA 749, St. Landry, LA
Built 1955 Load: 32.4 t ADT: 7,630
I0049
GoodOver: DRAINAGE DITCH
0.6 MI NORTH OF LA 3233, St. Landry, LA
Built 1960 Load: 32.4 t ADT: 4,002
I0049
GoodOver: DRAINAGE CANAL
1.2 MI NORTH OF LA 3233, St. Landry, LA
Built 1962 Load: 32.4 t ADT: 4,002
I0049
GoodOver: DRAINAGE CANAL
1.3 MI NORTH OF LA 3233, St. Landry, LA
Built 1962 Load: 32.4 t ADT: 4,451
Prudhomme St.
GoodOver: BAYOU RAWLES
0.5 MI NORTH OF US 190, St. Landry, LA
Built 1981 Load: 32.4 t ADT: 2,820
I0049
GoodOver: KENNISON BAYOU
0.46 MI S of US 167, St. Landry, LA
Built 1983 Load: 32.4 t ADT: 333
LA0751
GoodOver: DRAINAGE LATERAL
1.66 MI WEST OF LA 35, St. Landry, LA
Built 1970 Load: 32.4 t ADT: 666
LA0103
GoodOver: DRAINAGE CANAL
3.81 MI NORTH OF LA 104, St. Landry, LA
Built 1960 Load: 32.4 t ADT: 616
Domengeaux Rd.
GoodOver: Drain Canal
0.3 Mi. E. of La 93, St. Landry, LA
Built 2000 Load: 32.4 t ADT: 150
Oak Rd
GoodOver: Drainage Bayou
0.08 S. of La 358, St. Landry, LA
Built 1997 Load: 32.4 t ADT: 350
W. Linwood Dr.
GoodOver: RAWLES BAYOU
0.1 MI W of I-49 Frontage, St. Landry, LA
Built 2007 Load: 32.4 t ADT: 200
Showing 8,401-8,450 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 |