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
US0190
FairOver: BAYOU
0.7 MI EAST OF LA 752, St. Landry, LA
Built 1932 Load: 32.4 t ADT: 6,040
US0190
FairOver: BAYOU PLAQUEMINE
3.5 MI EAST OF LA 35, St. Landry, LA
Built 1931 Load: 32.4 t ADT: 11,913
US0190
FairOver: BAYOU CALAHAN
0.2 MI EAST OF LA 749, St. Landry, LA
Built 1967 Load: 32.4 t ADT: 10,065
US0190
FairOver: DRAIN
3.1 Miles East of I-49, St. Landry, LA
Built 1951 Load: 32.4 t ADT: 21,939
US0190
FairOver: DRAINAGE CANAL
3.0 MI EAST OF I-49, St. Landry, LA
Built 1951 Load: 32.4 t ADT: 21,939
US0167
FairOver: PLAQUEMINE BRULE
0.2 MI E OF LA 749, St. Landry, LA
Built 1932 Load: 32.4 t ADT: 7,630
LA0093
FairOver: BAYOU CARENCRO
0.1 MI SOUTH OF LA 761, St. Landry, LA
Built 1956 Load: 32.4 t ADT: 4,700
I0049
FairOver: DRAINAGE CANAL
1.6 MI NORTH OF LA 93, St. Landry, LA
Built 1962 Load: 32.4 t ADT: 38,400
I0049
FairOver: KENNISON BAYOU
0.27 MI N of US 167, St. Landry, LA
Built 1983 Load: 32.4 t ADT: 23,498
US0090
FairOver: CREEK
0.73 MI SOUTH OF LA 96, St. Martin, LA
Built 1965 Load: 32.4 t ADT: 62,432
I0010
FairOver: DRAIN
5 Mi E of LA 328, St. Martin, LA
Built 1968 Load: 32.4 t ADT: 5,704
LA0182
FairOver: CREEK
1.1 MI NW OF LA 83, St. Mary, LA
Built 1931 Load: 32.4 t ADT: 6,242
LA0182
FairOver: BAYOU CHOUPIQUE
0.9 MI NORTH OF LA 83, St. Mary, LA
Built 1931 Load: 32.4 t ADT: 6,242
US0090
FairOver: DRAIN
1.3 MI EAST OF LA 671, St. Mary, LA
Built 1973 Load: 32.4 t ADT: 18,127
US0090
FairOver: DRAIN
2.99MI EAST OF LA 671, St. Mary, LA
Built 1973 Load: 32.4 t ADT: 8,073
US0090
FairOver: BARROW CANAL
0.7 MI EAST OF LA 182, St. Mary, LA
Built 1964 Load: 32.4 t ADT: 17,736
US0090
FairOver: CREEK
9.3 MI West of LA 182, St. Mary, LA
Built 1964 Load: 32.4 t ADT: 10,035
Belle Terre Blvd.
FairOver: DRAIN
0.8 Mi W US190 Frontage R, St. Tammany, LA
Built 1936 Load: 32.4 t ADT: 100
LA1077
FairOver: COWPEN BRANCH
2.60 MILES EAST OF LA. 10, St. Tammany, LA
Built 2015 Load: 32.4 t ADT: 1,400
ORMOND DRIVE
FairOver: GUM BAYOU
0.65 MI EAST OF LA 1090, St. Tammany, LA
Built 1976 Load: 32.4 t ADT: 50
US0190
FairOver: SLOUGH
2.1 M E OF LA 1077, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 11,418
US0190
FairOver: CREEK
2.3 M E OF LA 1077, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 11,418
US0190
FairOver: CREEK
2.6 M E OF LA 1077, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 11,418
US0190-B
FairOver: CREEK
0.3 M W OF LA 21, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 9,408
US0190-B
FairOver: CREEK
0.1 M W OF LA 21, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 9,408
US0190
FairOver: CREEK
0.5 M E OF LA 59, St. Tammany, LA
Built 1932 Load: 32.4 t ADT: 23,512
US0190
FairOver: LITTLE BAYOU
1.8 M E OF LA 434, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 11,718
US0190
FairOver: DRAIN
0.1 M W OF US 11, St. Tammany, LA
Built 1933 Load: 32.4 t ADT: 16,944
US0011
FairOver: DRAIN
0.2 M N OF US 190, St. Tammany, LA
Built 1930 Load: 32.4 t ADT: 15,607
US0011
FairOver: DRAIN
0.9 M N OF US 190, St. Tammany, LA
Built 1930 Load: 32.4 t ADT: 14,365
US0011
FairOver: DRAIN
1.9 M N OF I-12, St. Tammany, LA
Built 1930 Load: 32.4 t ADT: 7,499
US0011
FairOver: DRAIN
2.3 M N OF I-12, St. Tammany, LA
Built 1930 Load: 32.4 t ADT: 7,499
LA0022
FairOver: DRAIN
LA 22, St. Tammany, LA
Built 1935 Load: 32.4 t ADT: 9,784
I0012
FairOver: DRAIN
1.5 M E OF US 11, St. Tammany, LA
Built 1970 Load: 32.4 t ADT: 78,215
I0012
FairOver: DRAINAGE
1.5 M E OF US 11, St. Tammany, LA
Built 1970 Load: 32.4 t ADT: 9,838
I0012
FairOver: DRAIN
1.5 M E OF US 11, St. Tammany, LA
Built 1970 Load: 32.4 t ADT: 29,236
Fenner Rd
FairOver: DRAINAGE DITCH
0.5 MILE N. OF LA.43, St. Tammany, LA
Built 1960 Load: 32.4 t ADT: 94
Joiner Rd
FairOver: EAST BEDICO CREEK BRIDGE
LA 1077 1.2 MI N JCT 1085, St. Tammany, LA
Built 1995 Load: 32.4 t ADT: 50
Holly Dr
FairOver: CREEK
0.1 MILES WEST OF LA 21, St. Tammany, LA
Built 2006 Load: 32.4 t ADT: 600
US0051
FairOver: DRAIN
2.50 MILES NORTH OF LA 44, Tangipahoa, LA
Built 2014 Load: 32.4 t ADT: 2,266
US0190
FairOver: DRAIN
3.6 M W OF I-55, Tangipahoa, LA
Built 1932 Load: 32.4 t ADT: 8,928
US0190
FairOver: DRAIN
0.3 M W OF LA 3158, Tangipahoa, LA
Built 1932 Load: 32.4 t ADT: 14,613
US0051
FairOver: CHUBBY CREEK
0.1 M S OF LA 1054, Tangipahoa, LA
Built 1956 Load: 32.4 t ADT: 2,403
LA0016
FairOver: CREEK
1.9 M W OF LA 445, Tangipahoa, LA
Built 1972 Load: 32.4 t ADT: 4,454
I0055
FairOver: DRAIN
3.8 M N OF LA 38, Tangipahoa, LA
Built 1966 Load: 32.4 t ADT: 21,762
I0012
FairOver: DRAIN
1.0 M E OF LA 1249, Tangipahoa, LA
Built 1970 Load: 32.4 t ADT: 45,151
I0012
FairOver: DRAINAGE
1.4 M E OF I-55, Tangipahoa, LA
Built 1970 Load: 32.4 t ADT: 58,377
I0012
FairOver: BEDICO CR.RELIEF
I0012, Tangipahoa, LA
Built 1974 Load: 32.4 t ADT: 53,386
C.M. Fagan Rd
FairOver: ARNOLD'S CREEK
002 MI N US 51&I-12 FAGON, Tangipahoa, LA
Built 2003 Load: 32.4 t ADT: 13,316
US0065
FairOver: BUCKNERBAYOU
2.6 MI SOUTH OF LA 590, Tensas, LA
Built 1949 Load: 32.4 t ADT: 1,795
Showing 4,201-4,250 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 |