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
I0010
FairOver: CHOUPIQUE BAYOU
8.1 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 43.5 t ADT: 86,969
I0010
FairOver: CHOUPIQUE BAYOU
4.7 MI W OF INT LA 27, Calcasieu, LA
Built 1965 Load: 43.5 t ADT: 11,437
LA0008
FairOver: RHINEHART CREEK
2.3 MI EAST OF US 84, Catahoula, LA
Built 1977 Load: 43.5 t ADT: 1,606
I0049
FairOver: I-49, CANEY BAYOU
4.57 MI N OF LA 509 INTG, De Soto, LA
Built 1986 Load: 43.5 t ADT: 29,022
I0049
FairOver: I-49, CANEY BAYOU
4.57 MI N OF LA 509 INTG, De Soto, LA
Built 1986 Load: 43.5 t ADT: 28,142
LA0067
FairOver: WHITE CREEK
LA 67, East Baton Rouge, LA
Built 1988 Load: 43.5 t ADT: 13,964
LA1248
FairOver: WARD CRK/BLUEBONNET BLVD
3.17 MI N OF BURBANK DR., East Baton Rouge, LA
Built 1978 Load: 43.5 t ADT: 24,300
LA0013
FairOver: BAYOU DES CANNES
2.4 MI NORTH OF LA 29, Evangeline, LA
Built 1967 Load: 43.5 t ADT: 5,328
US0167
FairOver: TURKEY CREEK
.7 MI NORTH OF US 167, Evangeline, LA
Built 1964 Load: 43.5 t ADT: 798
US0167
FairOver: CREEK
1.4 MI NORTH OF US 167, Evangeline, LA
Built 1966 Load: 43.5 t ADT: 798
US0167
FairOver: COULEE MANUEL
0.8 MI EAST OF LA 29, Evangeline, LA
Built 1995 Load: 43.5 t ADT: 16,358
LA1163
FairOver: BAYOU MARROW
1.86 MI NORTH OF LA 29, Evangeline, LA
Built 1975 Load: 43.5 t ADT: 21
LA0017
FairOver: DEER CREEK
5.88 MI NORTH OF LA 4, Franklin, LA
Built 1972 Load: 43.5 t ADT: 4,194
US0071
FairOver: HUDSON CREEK
2.99 MI. SOUTH OF LA 1241, Grant, LA
Built 1969 Load: 43.5 t ADT: 2,063
LA0008
FairOver: SUGARHOUSE BAYOU
1.4 MI. EAST OF LA 158, Grant, LA
Built 1972 Load: 43.5 t ADT: 2,113
US0090
FairOver: DELAHOUSSAYE CANAL
0.10 MI W of LA 668, Iberia, LA
Built 1971 Load: 43.5 t ADT: 2,629
US0090/Ramp
FairOver: Delahoussaye Canal
3.33 Mi SE of LA 85, Iberia, LA
Built 1971 Load: 43.5 t ADT: 2,629
LA0674
FairOver: COMMERCIAL CANAL
1.0M SOUTH OF LA 14, Iberia, LA
Built 1991 Load: 43.5 t ADT: 8,040
US0190
FairOver: DRY SLOUGH
2.0 MI EAST OF LA 26, Jefferson Davis, LA
Built 2003 Load: 43.5 t ADT: 6,816
LA0035
FairOver: INDIAN BAYOU
1.3 Mi N. of La 92, Lafayette, LA
Built 1976 Load: 43.5 t ADT: 1,034
I0010
FairOver: BAYOU ILE DES CANNES
1.65 MI E of LA 724, Lafayette, LA
Built 1968 Load: 43.5 t ADT: 56,748
I0010
FairOver: BAYOU ILE DES CANNES
0.4 MI WEST OF LA 93, Lafayette, LA
Built 1968 Load: 43.5 t ADT: 16,369
LA0308
FairOver: COMPANY CANAL
.5 MI SOUTH OF LA 655, Lafourche, LA
Built 1974 Load: 43.5 t ADT: 12,187
US0090
FairOver: DRAINAGE CANAL
.85 MI EAST OF LA 316, Lafourche, LA
Built 1982 Load: 43.5 t ADT: 14,769
US0090
FairOver: DRAINAGE CANAL
.85 MI EAST OF LA 316, Lafourche, LA
Built 1982 Load: 43.5 t ADT: 13,535
US0090
FairOver: DRAINAGE CANAL
2.17 MI EAST OF LA 316, Lafourche, LA
Built 1982 Load: 43.5 t ADT: 14,769
US0090
FairOver: CUTOFF BAYOU
1.4 MI WEST OF LA 1, Lafourche, LA
Built 1984 Load: 43.5 t ADT: 189
US0084
FairOver: DOYLE CREEK
.3 MI EAST OF LA 8, LaSalle, LA
Built 1967 Load: 43.5 t ADT: 2,479
I0020
FairOver: N.FORK CHOUDRANT E-BOUND
.8 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 50,895
I0020
FairOver: N.FORK CHOUDRANT W-BOUND
.8 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 37,514
I0020
FairOver: W RELIEF CHOUDRANT CREEK
4.3 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 50,895
I0020
FairOver: W RELIEF CHOUDRANT CREEK
4.3 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 37,514
I0020
FairOver: MID. REL.CHOUDRANT CREEK
4.5 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 50,895
I0020
FairOver: MID. REL CHOUDRANT CREEK
4.5 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 37,514
I0020
FairOver: CHOUDRANT CREEK
4.7 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 50,895
I0020
FairOver: CHOUDRANT CREEK
4.7 MI EAST OF LA 145M, Lincoln, LA
Built 1960 Load: 43.5 t ADT: 37,514
LA0138
FairOver: DRAIN
.7 MI NORTH OF LA 593, Morehouse, LA
Built 1993 Load: 43.5 t ADT: 836
LA0006
FairOver: STOKER BRANCH
.70 MI. E OF JCT LA 120, Natchitoches, LA
Built 1967 Load: 43.5 t ADT: 6,226
LA0006
FairOver: YOUNG BAYOU
1.45 MI. EAST OF LA 117, Natchitoches, LA
Built 1964 Load: 43.5 t ADT: 8,675
LA0001
FairOver: OLD RIVER
2.21 MI W OF JCT LA 1, Natchitoches, LA
Built 1972 Load: 43.5 t ADT: 4,740
LA0001
FairOver: YOUNGS BAYOU
3.16 MI W OF JCT LA 1, Natchitoches, LA
Built 1972 Load: 43.5 t ADT: 4,740
I0049
FairOver: JOHNSON CHUTE BAYOU
6.29 MI. N OF LA6, Natchitoches, LA
Built 1985 Load: 43.5 t ADT: 18,305
I0049
FairOver: JONHSON CHUTE BAYOU
6.29 MI. N OF LA6, Natchitoches, LA
Built 1985 Load: 43.5 t ADT: 28,142
LA1222
FairOver: MALLARD BAYOU
2.13 MI. E OF INT LA485, Natchitoches, LA
Built 1994 Load: 43.5 t ADT: 94
I0010
FairOver: GROUND
1.7 MI EAST OF I-610, Orleans, LA
Built 1977 Load: 43.5 t ADT: 1,600
I0010
FairOver: DWYER CANAL/DWYER RD
.7 MI EAST OF US 90, Orleans, LA
Built 1967 Load: 43.5 t ADT: 1,600
LA0139
FairOver: CREEK
1.9 MI NORTH OD LA 594, Ouachita, LA
Built 1995 Load: 43.5 t ADT: 15,958
LA0034
FairOver: S CHENIERE CREEK
2.0 MI EAST OF LA 546, Ouachita, LA
Built 1976 Load: 43.5 t ADT: 1,693
LA0034
FairOver: ROGERS CREEK
3.9 MI EAST OF LA 546, Ouachita, LA
Built 1976 Load: 43.5 t ADT: 1,693
LA0034
FairOver: LONGS CREEK
6.7 MI EAST OF LA 546, Ouachita, LA
Built 1976 Load: 43.5 t ADT: 1,693
Showing 6,051-6,100 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 |