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
US0090
GoodOver: MCMAHON CANAL
.7 MI EAST OF LA 182, Lafourche, LA
Built 1984 Load: 43.5 t ADT: 189
US0084
GoodOver: EARL CREEK
.6 MI EAST OF LA 8, LaSalle, LA
Built 1967 Load: 43.5 t ADT: 2,479
LA0008
GoodOver: CLEAR FORK
.4 MI NORTH OF LA 774, LaSalle, LA
Built 1972 Load: 43.5 t ADT: 344
US0190
GoodOver: DUMPLIN CREEK
0.2 M E OF LA 447, Livingston, LA
Built 2000 Load: 43.5 t ADT: 10,296
LA0449
GoodOver: CREEK
2.2 M N OF US 190, Livingston, LA
Built 1972 Load: 43.5 t ADT: 4,609
LA0449
GoodOver: CREEK
0.1 M N OF LA 1024, Livingston, LA
Built 1972 Load: 43.5 t ADT: 4,609
LA0449
GoodOver: CREEK
1.5 M S OF LA 63, Livingston, LA
Built 1973 Load: 43.5 t ADT: 4,609
LA0449
GoodOver: CREEK
0.7 M S OF LA 63, Livingston, LA
Built 1973 Load: 43.5 t ADT: 4,609
ENGLEWOOD RD
GoodOver: ROUNDAWAY BAYOU
1.1 MI SW of US 65, Madison, LA
Built 2010 Load: 43.5 t ADT: 150
LA0138
GoodOver: COULSS BAYOU
3.9 MI NORTH OF LA 3079, Morehouse, LA
Built 1993 Load: 43.5 t ADT: 1,830
LA0001
GoodOver: BAYOU JULIEN
1.11 MI. W OF JCT LA 1, Natchitoches, LA
Built 1972 Load: 43.5 t ADT: 4,740
LA0001
GoodOver: BAYOU DARBONNE TRIB
.35 MI. N OF INT LA119, Natchitoches, LA
Built 1990 Load: 43.5 t ADT: 996
I0020
GoodOver: I20;RAMP S4
2.0 MI EAST OF LA 34, Ouachita, LA
Built 1965 Load: 43.5 t ADT: 15,642
LA1208-1
GoodOver: CHATLIN LAKE CANAL
0.35 MI. SW OF LA 1, Rapides, LA
Built 1994 Load: 43.5 t ADT: 4,442
US0071
GoodOver: DITCH
4.41 MI. NORTH OF LA 3170, Rapides, LA
Built 1989 Load: 43.5 t ADT: 14,299
US0071
GoodOver: DITCH
4.41 MI. NORTH OF LA 3170, Rapides, LA
Built 1989 Load: 43.5 t ADT: 17,593
US0165
GoodOver: INDIAN CREEK
1.7 M N OF JCT. LA 112, Rapides, LA
Built 1991 Load: 43.5 t ADT: 10,670
LA0121
GoodOver: MILL CREEK
2.59 MI. WEST OF LA 463, Rapides, LA
Built 1992 Load: 43.5 t ADT: 1,932
LA0121
GoodOver: BIG CREEK
2.46 MI. WEST OF LA 463, Rapides, LA
Built 1992 Load: 43.5 t ADT: 1,932
LA0112
GoodOver: HURRICANE CREEK
0.74 MI. EAST OF US 165, Rapides, LA
Built 1971 Load: 43.5 t ADT: 2,304
LA0112
GoodOver: BEAVER CREEK TRIBUTARY
5.41 MI. EAST OF US 165, Rapides, LA
Built 1971 Load: 43.5 t ADT: 2,304
LA1204
GoodOver: HAW CREEK
1.24 MI EAST JCT US 165, Rapides, LA
Built 1996 Load: 43.5 t ADT: 1,951
LA0116
GoodOver: BAYOU FLAGON
7.44 MI. E OF INT US165, Rapides, LA
Built 1969 Load: 43.5 t ADT: 6,942
I0049
GoodOver: EMBANKMENT
.12 MI. N OF US167, Rapides, LA
Built 1995 Load: 43.5 t ADT: 17,593
LA0498
GoodOver: BIG BAYOU
0.28 M S. OF LA 1, Rapides, LA
Built 1996 Load: 43.5 t ADT: 868
LA0498
GoodOver: IRISH DITCH NO. 2
2.76 MI W. OF US 71, Rapides, LA
Built 1994 Load: 43.5 t ADT: 868
US0171
GoodOver: BAYOU SCIE RELIEF
1.22 MI. SOUTH OF LA 482, Sabine, LA
Built 1990 Load: 43.5 t ADT: 3,097
US0171
GoodOver: BAYOU SCIE
1.05 MI. SOUTH OF LA 482, Sabine, LA
Built 1990 Load: 43.5 t ADT: 3,097
LA1217
GoodOver: PHILLIP CREEK RELIEF
.7 MI NORTH OF LA 6, Sabine, LA
Built 1998 Load: 43.5 t ADT: 1,645
LA1217
GoodOver: PHILLIPS CREEK
0.78 MI. NORTH OF LA 6, Sabine, LA
Built 1998 Load: 43.5 t ADT: 1,645
LA1217
GoodOver: HARPOON BAYOU RELIEF
1.29 MI. NORTH OF LA 6, Sabine, LA
Built 1998 Load: 43.5 t ADT: 1,645
LA1217
GoodOver: HARPOON BAYOU
1.38 MI. NORTH OF LA 6, Sabine, LA
Built 1998 Load: 43.5 t ADT: 1,645
LA1217
GoodOver: KLONDIKE CREEK
4.21 MI. NORTH OF LA 6, Sabine, LA
Built 1998 Load: 43.5 t ADT: 1,645
LA0118
GoodOver: TORO CREEK
3.9 MI. E. JCT. US 171, Sabine, LA
Built 1997 Load: 43.5 t ADT: 1,471
LA0191
GoodOver: BEAVER CREEK
1.12 MI. SOUTH OF LA 473, Sabine, LA
Built 1976 Load: 43.5 t ADT: 1,700
LA1216
GoodOver: BAYOU SCIE
.74 MI EAST OF US 171, Sabine, LA
Built 1996 Load: 43.5 t ADT: 209
LA1216
GoodOver: BAYOU SCIE RELIEF
.94 MI EAST OF US 171, Sabine, LA
Built 1996 Load: 43.5 t ADT: 209
LA1216
GoodOver: BAYOU SCIE RELIEF
1.05 MI EAST OF US 171, Sabine, LA
Built 1996 Load: 43.5 t ADT: 209
LA3127
GoodOver: UNION CARBIDE CANAL
.6 MI EAST OF LA 3142, St. Charles, LA
Built 1990 Load: 43.5 t ADT: 9,206
LA3127
GoodOver: HAHNVILLE CANAL
.1 MI WEST OF LA 3160, St. Charles, LA
Built 1975 Load: 43.5 t ADT: 6,703
LA3127
GoodOver: HAHNVILLE CANAL
.1 MI WEST OF LA 3160, St. Charles, LA
Built 1990 Load: 43.5 t ADT: 9,206
LA3127
GoodOver: VIAL CANAL
.9 MI EAST OF LA 3160, St. Charles, LA
Built 1990 Load: 43.5 t ADT: 9,206
LA3127
GoodOver: HYMEL CANAL
2.2 MI EAST OF LA 3160, St. Charles, LA
Built 1975 Load: 43.5 t ADT: 6,703
LA3127
GoodOver: HYMEL CANAL
2.2 MI EAST OF LA 3160, St. Charles, LA
Built 1990 Load: 43.5 t ADT: 9,206
US0190
GoodOver: LATANIS BAYOU
3.00 Mi E of US 71, St. Landry, LA
Built 1972 Load: 43.5 t ADT: 20,176
I0049
GoodOver: BAYOU DELPUENTE
2.1 MI S of LA 744, St. Landry, LA
Built 1983 Load: 43.5 t ADT: 403
I0049
GoodOver: BAYOU DELPUENTE
2.03 Mi S of LA 744, St. Landry, LA
Built 1983 Load: 43.5 t ADT: 333
US0090
GoodOver: VACHERIE CANAL
1.4 MI EAST OF LA 318, St. Mary, LA
Built 1978 Load: 43.5 t ADT: 269
US0190
GoodOver: SLOUGH
1.9 M E OF LA 1077, St. Tammany, LA
Built 1941 Load: 43.5 t ADT: 11,418
LA0041
GoodOver: DRAIN
1.1 M NW OF US 11, St. Tammany, LA
Built 1968 Load: 43.5 t ADT: 11,342
Showing 10,451-10,500 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 |