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
Potato Shed Rd
FairOver: BAYOU BERARD DRAIN CANAL
0.8 MI. E. OF HWY LA 678, St. Martin, LA
Built 1985 Load: 32.1 t ADT: 186
Bayou Pacquet
FairOver: BAYOU PAQUET
5.2 MI. W. OF LA 433, St. Tammany, LA
Built 1985 Load: 32.1 t ADT: 737
I0055
FairOver: COOLS CREEK
I0055, Tangipahoa, LA
Built 1966 Load: 32.1 t ADT: 21,762
I0055
FairOver: COOLS CREEK
I0055, Tangipahoa, LA
Built 1966 Load: 32.1 t ADT: 17,665
DRAKES FORK RD
FairOver: HORSE BRANCH
4.0 MILES SOUTH OF LA 10, Vernon, LA
Built 1984 Load: 32.1 t ADT: 190
Welcome Home
FairOver: KIESHE CREEK
APPROX. .4 M. W. OF LA 34, Winn, LA
Built 1984 Load: 32.1 t ADT: 160
US0090
FairOver: CREEK
0.5 MI. EAST OF LA 91, Acadia, LA
Built 1931 Load: 32.4 t ADT: 2,899
LA0013
FairOver: CREEK
.6 MI NORTH OF LA 1121, Acadia, LA
Built 1960 Load: 32.4 t ADT: 9,877
LA0013
FairOver: CREEK
.3 MI NORTH OF LA 3123, Acadia, LA
Built 1966 Load: 32.4 t ADT: 6,146
LA0097
FairOver: CREEK
3.53 MI NORTH OF I-10, Acadia, LA
Built 1954 Load: 32.4 t ADT: 1,175
LA0097
FairOver: CREEK
3.64 MI NORTH OF LA 100, Acadia, LA
Built 1962 Load: 32.4 t ADT: 1,175
LA0365
FairOver: PRATHER GULLY
0.8 MI EAST OF LA 367, Acadia, LA
Built 1965 Load: 32.4 t ADT: 1,570
LA0035
FairOver: CREEK
3.19 MI N of LA 92, Acadia, LA
Built 1976 Load: 32.4 t ADT: 1,034
I0010
FairOver: DRAIN
2.0 Mi E. of LA 91, Acadia, LA
Built 1959 Load: 32.4 t ADT: 58,865
I0010
FairOver: DRAIN
2.50 MI W of LA 13, Acadia, LA
Built 1961 Load: 32.4 t ADT: 1,471
I0010
FairOver: DRAIN
0.6 MI EAST OF LA 35, Acadia, LA
Built 1966 Load: 32.4 t ADT: 78,651
Howard St.
FairOver: Canal
0.03 MI S of LA 370, Acadia, LA
Built 1998 Load: 32.4 t ADT: 2,064
Link Rd
FairOver: LEJUNE GULLY
2.5 Mi E of La 367, Acadia, LA
Built 1993 Load: 32.4 t ADT: 48
US0165
FairOver: BAYOU
2.7 MI. N. OF US 190, Allen, LA
Built 2008 Load: 32.4 t ADT: 11,196
US0165
FairOver: BAYOU
3.3 MI NORTH OF US 190, Allen, LA
Built 2008 Load: 32.4 t ADT: 11,196
US0165
FairOver: DRAIN
2.0 MI NORTH OF LA 10, Allen, LA
Built 2008 Load: 32.4 t ADT: 7,676
US0190
FairOver: KINDER CANAL
1.75 MI. E OF INT US165, Allen, LA
Built 1932 Load: 32.4 t ADT: 6,929
US0190
FairOver: DRAIN
3.27 MI. E OF INT US 165, Allen, LA
Built 1957 Load: 32.4 t ADT: 6,929
US0165
FairOver: DRAIN
4.3 MI. N. OF INT. LA 26, Allen, LA
Built 1931 Load: 32.4 t ADT: 11,886
US0165
FairOver: DRAIN
10.06 MI. N OF INT LA 26, Allen, LA
Built 1931 Load: 32.4 t ADT: 11,886
US0165
FairOver: DRAIN
11.3 MI. N. OF LA 26, Allen, LA
Built 1931 Load: 32.4 t ADT: 11,886
US0165
FairOver: DRAIN
4.3 MI. N OF INT LA1153, Allen, LA
Built 2008 Load: 32.4 t ADT: 11,113
LA0026
FairOver: BRUSHY BRANCH
0.7 MI SE OF LA 377, Allen, LA
Built 1927 Load: 32.4 t ADT: 2,151
LA0026
FairOver: DRAIN
1.4 MI. SE OF LA 377, Allen, LA
Built 1927 Load: 32.4 t ADT: 2,151
LA0026
FairOver: BAYOU BLUE
1.24 MI. E OF INT US165, Allen, LA
Built 1958 Load: 32.4 t ADT: 2,746
LA0010
FairOver: BAYOU
3 MI E of LA 112, Allen, LA
Built 1972 Load: 32.4 t ADT: 2,982
LA0113
FairOver: DRAIN
1.92 MI. N OF INT US190, Allen, LA
Built 1959 Load: 32.4 t ADT: 1,806
LA0112
FairOver: DRAIN
4.6 MI E Of LA 377, Allen, LA
Built 1960 Load: 32.4 t ADT: 1,138
LA0383
FairOver: DRAIN
4.9 MI W OF US 165, Allen, LA
Built 1959 Load: 32.4 t ADT: 2,193
LA0377
FairOver: DRAIN
4.32 MI. N OF INT LA26, Allen, LA
Built 1959 Load: 32.4 t ADT: 590
MARTIN TRAM RD
FairOver: BARNES CREEK
3.2 MI SW OF SNOOKYS RD, Allen, LA
Built 1985 Load: 32.4 t ADT: 414
CRIP DUPLECHAIN RD
FairOver: BAYOU SERPENT
0.5 MI E OF E. ORTEGO RD, Allen, LA
Built 2001 Load: 32.4 t ADT: 43
LITTLE MILL RD
FairOver: STREAM
0.6 MILES S OF US 190, Allen, LA
Built 1997 Load: 32.4 t ADT: 1,071
GARCILLE RD
FairOver: OBERLIN DITCH
0.5 MI N of 9TH AVE, Allen, LA
Built 1997 Load: 32.4 t ADT: 300
US0061
FairOver: CANAL DRAIN
3 MI N INTER US 61 &LA22, Ascension, LA
Built 1982 Load: 32.4 t ADT: 29,303
LA0001
FairOver: MCMANOR CANAL
5.8 M SE of LA 1&LA 69, Ascension, LA
Built 1935 Load: 32.4 t ADT: 7,858
LA0044
FairOver: DRAINAGE
ON LA 44 1.0 MI N. LA 931, Ascension, LA
Built 1999 Load: 32.4 t ADT: 12,382
LA0030
FairOver: STREAM
0.4 M W of LA 30&LA 3251, Ascension, LA
Built 1968 Load: 32.4 t ADT: 16,790
I0010
FairOver: DRAIN
0.6 M S of I-10&LA 30, Ascension, LA
Built 1975 Load: 32.4 t ADT: 60,802
I0010
FairOver: BOYLE BAYOU
1.3 M S of I-10&LA 30, Ascension, LA
Built 1979 Load: 32.4 t ADT: 60,802
I0010
FairOver: HACKETT CANAL
1.2 M SE of I-10&LA 44, Ascension, LA
Built 1979 Load: 32.4 t ADT: 57,444
LA0928
FairOver: JIM BAYOU
0.8 M W of I-10&LA 73, Ascension, LA
Built 1966 Load: 32.4 t ADT: 5,446
Fuqua Crossing
FairOver: BAYOU ROUGE
0.02 MI. WEST OF LA 107, Avoyelles, LA
Built 2011 Load: 32.4 t ADT: 400
LA0115
FairOver: BORDELON SLOUGH
0.63 MI. NORTH OF LA 1188, Avoyelles, LA
Built 1961 Load: 32.4 t ADT: 3,936
LA0107
FairOver: BAYOU LACOMBE
0.06 MI. NORTH OF LA 114, Avoyelles, LA
Built 1993 Load: 32.4 t ADT: 6,887
Showing 3,701-3,750 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 |