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
FairOver: B.CUTOFF
1.4 MI WEST OF LA 1, Lafourche, LA
Built 1976 Load: 42.6 t ADT: 13,535
US0090
FairOver: DRAINAGE CANAL
2.7 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 42.6 t ADT: 27,665
LA0150
FairOver: CYPRESS CREEK
.3 MI EAST OF LA 818, Lincoln, LA
Built 2000 Load: 42.6 t ADT: 8,188
I0020
FairOver: JOE'S BAYOU LAKE
1.3 MI WEST OF LA 577, Madison, LA
Built 1971 Load: 42.6 t ADT: 31,481
I0020
FairOver: JOE'S BAYOU LAKE
1.3 MI WEST OF LA 577, Madison, LA
Built 1971 Load: 42.6 t ADT: 31,481
LA0140
FairOver: BAYOU DEGLAISE
3.54 MI E of US 425, Morehouse, LA
Built 2001 Load: 42.6 t ADT: 2,284
LA0006
FairOver: STOKER BRANCH
.61 MI. E OF JCT LA 120, Natchitoches, LA
Built 1967 Load: 42.6 t ADT: 6,226
LA0001
FairOver: BAYOU JULIEN
3.2 MI. N OF N INT LA119, Natchitoches, LA
Built 1974 Load: 42.6 t ADT: 5,009
LA0001
FairOver: BAYOU JULIEN
3.2 MI. N OF N INT LA119, Natchitoches, LA
Built 1974 Load: 42.6 t ADT: 7,420
LA3163
FairOver: SIMS BAYOU
.30 MI. N OF INT LA480, Natchitoches, LA
Built 1975 Load: 42.6 t ADT: 1,146
I0610
FairOver: GOLFER'S U'PASS
2.1 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 42.6 t ADT: 105,572
I0610
FairOver: ST. JOHN BAYOU
2.7 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 42.6 t ADT: 105,572
I0010
FairOver: BULLARD RD.
4.4 MI EAST OF US 90, Orleans, LA
Built 1973 Load: 42.6 t ADT: 77,962
LA0546
FairOver: CHENIERE CREEK
8.63 MI E of LA 34, Ouachita, LA
Built 2000 Load: 42.6 t ADT: 6,382
US0165
FairOver: ROCKY BAYOU
1.61 MI. N OF INT US71, Rapides, LA
Built 1997 Load: 42.6 t ADT: 20,902
US0165
FairOver: ROCKY BAYOU
1.61 MI. N OF INT US71, Rapides, LA
Built 1997 Load: 42.6 t ADT: 20,902
I0049
FairOver: BAYOU CLEAR
4.0 M N OF LA 112 ON I-49, Rapides, LA
Built 1990 Load: 42.6 t ADT: 20,572
I0049
FairOver: BAYOU CLEAR
4.0 M N OF LA 112 ON I-49, Rapides, LA
Built 1990 Load: 42.6 t ADT: 11,969
I0049
FairOver: BAYOU BOEUF
2.32 MI. SOUTH OF LA 3265, Rapides, LA
Built 1990 Load: 42.6 t ADT: 20,572
I0049
FairOver: BAYOU BOEUF
2.32 MI. SOUTH OF LA 3265, Rapides, LA
Built 1990 Load: 42.6 t ADT: 11,969
I0049
FairOver: COTTON BAYOU
0.71 MI. NORTH OF LA 498, Rapides, LA
Built 1991 Load: 42.6 t ADT: 25,033
US0080
FairOver: CREW LAKE
.8 MI WEST OF SOUTH INT O, Richland, LA
Built 1953 Load: 42.6 t ADT: 2,747
LA0016
FairOver: WEST HOG BRANCH
1.7 MI WEST OF 449 INTER, St. Helena, LA
Built 1997 Load: 42.6 t ADT: 4,844
LA0432
FairOver: AMITE RIVER @ FELIXVILLE
LA 432, St. Helena, LA
Built 1977 Load: 42.6 t ADT: 532
LA0432
FairOver: AMITE RIVER RELIEF
3.2 M NW OF LA 38, St. Helena, LA
Built 1977 Load: 42.6 t ADT: 532
US0051
FairOver: DRAINAGE CANAL
0.1 M NE OF I-55, St. John the Baptist, LA
Built 1975 Load: 42.6 t ADT: 20,097
US0190
FairOver: ATCHAFALAYA FLOODWAY
2.0 MI EAST OF LA 975, St. Landry, LA
Built 1961 Load: 42.6 t ADT: 20,176
US0190
FairOver: ATCHAFALAYA FLDWY
1.88 Mi E of US 71, St. Landry, LA
Built 1961 Load: 42.6 t ADT: 14,088
LA0182
FairOver: BAYOU BOURBEAUX
1.2 MI NORTH OF LA 93, St. Landry, LA
Built 1975 Load: 42.6 t ADT: 13,213
LA0182
FairOver: BAYOU TESSON
0.9 MI WEST OF LA 3233, St. Landry, LA
Built 1975 Load: 42.6 t ADT: 13,213
I0049
FairOver: BAYOU CALAHAN
1.94 Mi S of LA 31, St. Landry, LA
Built 1982 Load: 42.6 t ADT: 4,451
I0010
FairOver: MIDDLE PEARL R.
I0010, St. Tammany, LA
Built 1970 Load: 42.6 t ADT: 55,785
I0010
FairOver: MIDDLE PEARL R.
I0010, St. Tammany, LA
Built 1970 Load: 42.6 t ADT: 1,600
LA0016
FairOver: SQUIRREL CREEK
0.63 MI. E OF LA 445, Tangipahoa, LA
Built 1974 Load: 42.6 t ADT: 3,747
LA0016
FairOver: CHAPPEPEELA CREEK
LA0016, Tangipahoa, LA
Built 1974 Load: 42.6 t ADT: 3,747
LA0022
FairOver: YELLOW WATER CREEK
1.8 M W OF I-55, Tangipahoa, LA
Built 1976 Load: 42.6 t ADT: 18,757
LA0022
FairOver: PONCHATOULA CREEK
1.0 M W OF I-55, Tangipahoa, LA
Built 1976 Load: 42.6 t ADT: 18,757
LA0016
FairOver: CREEK
0.2 M E OF I-55, Tangipahoa, LA
Built 1970 Load: 42.6 t ADT: 18,222
LA0016
FairOver: CREEK
0.2 M E OF I-55, Tangipahoa, LA
Built 1970 Load: 42.6 t ADT: 11,858
I0012
FairOver: PONCHATOULA CREEK
I0010, Tangipahoa, LA
Built 1975 Load: 42.6 t ADT: 58,377
LA0316
FairOver: ST.LOUIS CANAL
0.50 NORTH OF LA.24, Terrebonne, LA
Built 1996 Load: 42.6 t ADT: 7,165
LA0002
FairOver: CANE CREEK
1.2 MI WEST OF US 167, Union, LA
Built 1979 Load: 42.6 t ADT: 886
LA0015
FairOver: STONE CREEK
5.3 MI NORTH OF LA 145, Union, LA
Built 1965 Load: 42.6 t ADT: 4,984
LA0016
FairOver: MILL CREEK
0.1 M NW OF LA 60, Washington, LA
Built 1976 Load: 42.6 t ADT: 2,303
LA0016
FairOver: PIG BRANCH
1.7 M NW OF LA 437, Washington, LA
Built 1976 Load: 42.6 t ADT: 2,087
LA0016
FairOver: BARLOW BRANCH
2.0 M NW OF LA 437, Washington, LA
Built 1976 Load: 42.6 t ADT: 2,087
LA0016
FairOver: WARNER CREEK
2.8 M NW OF LA 437, Washington, LA
Built 1976 Load: 42.6 t ADT: 2,087
LA0016
FairOver: GREEN BRANCH
3.5 M S OF LA 1072, Washington, LA
Built 1972 Load: 42.6 t ADT: 2,087
LA0016
FairOver: RICHARDSON BRANCH
2.3 M S OF LA 1072, Washington, LA
Built 1972 Load: 42.6 t ADT: 2,087
LA0016
FairOver: LAWRENCE CREEK
1.0 M S OF LA 1072, Washington, LA
Built 1972 Load: 42.6 t ADT: 2,087
Showing 5,951-6,000 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 |