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
LA0077
FairOver: RICHARD BAYOU
LA0077, Iberville, LA
Built 1968 Load: 29.0 t ADT: 4,376
US0090
FairOver: DRAIN CANAL
2.8 MI WEST OF US 90B, Jefferson, LA
Built 1940 Load: 29.0 t ADT: 28,780
LA0383
FairOver: BAYOU ARCENEAUX
2.1 MI N OF LA 101, Jefferson Davis, LA
Built 1965 Load: 29.0 t ADT: 5,563
LA0383
FairOver: SERPENT BAYOU
4.7 MI N OF LA 101, Jefferson Davis, LA
Built 1965 Load: 29.0 t ADT: 5,563
I0010
FairOver: W BAYOU CHENE
2.6 MI WEST OF LA 26, Jefferson Davis, LA
Built 1965 Load: 29.0 t ADT: 2,000
I0010
FairOver: MID BAYOU CHENE
3.2 MI EAST OF LA 395, Jefferson Davis, LA
Built 1965 Load: 29.0 t ADT: 2,000
US0090
FairOver: B ILE DES CANNES
1.7 MI EAST OF LA 724, Lafayette, LA
Built 1953 Load: 29.0 t ADT: 7,540
US0090
FairOver: COULEE MINE
0.7 MI EAST OF LA 93, Lafayette, LA
Built 1953 Load: 29.0 t ADT: 7,540
LA0771
FairOver: CREEK
.3 MI NORTH OF LA 503, LaSalle, LA
Built 1965 Load: 29.0 t ADT: 186
LA0771
FairOver: FUNNY LOUIS
.5 MI NORTH OF LA 503, LaSalle, LA
Built 1965 Load: 29.0 t ADT: 186
LA0771
FairOver: CREEK
.8 MI NORTH OF LA 503, LaSalle, LA
Built 1965 Load: 29.0 t ADT: 186
LA0771
FairOver: CREEK
2.2 MI NORTH OF LA 503, LaSalle, LA
Built 1965 Load: 29.0 t ADT: 186
LA0771
FairOver: SALTY CREEK
3.5 MI NORTH OF LA 503, LaSalle, LA
Built 1965 Load: 29.0 t ADT: 186
US0190
FairOver: MID COLYELL CR.
1.3 M E OF LA 447, Livingston, LA
Built 1932 Load: 29.0 t ADT: 9,745
LA0022
FairOver: AMITE RIVER @ CLIO
3.7 M S OF LA 444, Livingston, LA
Built 1974 Load: 29.0 t ADT: 1,277
LA0546
FairOver: WILDERS CREEK
2.8 MI NORTH OF LA 151, Ouachita, LA
Built 1953 Load: 29.0 t ADT: 2,706
US0165
FairOver: LA. & ARKANSAS RR
1.44 MI. N OF INT US71, Rapides, LA
Built 1997 Load: 29.0 t ADT: 20,902
US0167
FairOver: DIVERSION CANAL
2.98 MI. SOUTH OF US 71, Rapides, LA
Built 1950 Load: 29.0 t ADT: 2,324
LA1206
FairOver: Cainey Bayou
1.05 MI. E OF LA115, Rapides, LA
Built 1939 Load: 29.0 t ADT: 1,042
LA1200
FairOver: HEMPHILL CREEK
3.43 MI. S OF LA121, Rapides, LA
Built 1966 Load: 29.0 t ADT: 1,400
US0080
FairOver: CYPRESS BAYOU
2.9 MI EAST OF LA 583, Richland, LA
Built 1930 Load: 29.0 t ADT: 1,451
US0080
FairOver: HURRICANE
3.3 MI EAST OF LA 583, Richland, LA
Built 1930 Load: 29.0 t ADT: 1,451
US0080
FairOver: CREEK
1.2 MI EAST OF LA 183, Richland, LA
Built 1930 Load: 29.0 t ADT: 1,451
US0080
FairOver: LITTLE CREEK
2.7 MI EAST OF LA 183, Richland, LA
Built 1930 Load: 29.0 t ADT: 1,451
US0090
FairOver: SELLERS CANAL
5.6 MI EAST OF LA 633, St. Charles, LA
Built 1940 Load: 29.0 t ADT: 25,051
LA0449
FairOver: BRUSHY CREEK
LA0449, St. Helena, LA
Built 1965 Load: 29.0 t ADT: 1,228
LA0449
FairOver: BRUSHY CREEK
3.21 MI. SOUTH OF LA 37, St. Helena, LA
Built 1965 Load: 29.0 t ADT: 1,228
LA0449
FairOver: HOFFMAN CREEK
2.3 M S OF LA 37, St. Helena, LA
Built 1965 Load: 29.0 t ADT: 1,228
I0010
FairOver: RESERVE RELIEF CANAL
I 10, St. John the Baptist, LA
Built 1974 Load: 29.0 t ADT: 44,074
US0190
FairOver: BAYOU CASTINE
US0190, St. Tammany, LA
Built 1932 Load: 29.0 t ADT: 9,200
US0190
FairOver: CANE BAYOU
US0190, St. Tammany, LA
Built 1932 Load: 29.0 t ADT: 16,969
US0190
FairOver: BAYOU BONFOUCA
US0190, St. Tammany, LA
Built 1933 Load: 29.0 t ADT: 16,944
LA1057
FairOver: BIG CREEK
LA1057, Tangipahoa, LA
Built 1967 Load: 29.0 t ADT: 1,539
LA0002
FairOver: LYNN CREEK
3.8 MI WEST OF US 167, Union, LA
Built 1950 Load: 29.0 t ADT: 886
LA0143
FairOver: COOK CREEK
2.5 MI NORTH OF LA 2, Union, LA
Built 1951 Load: 29.0 t ADT: 2,254
LA0134
FairOver: ALLIGATOR BAYOU
3.1 MI EAST OF LA 17, West Carroll, LA
Built 1951 Load: 29.0 t ADT: 759
US0061
FairOver: RELIEF BRIDGE, US 61
US 61, WEST FELICIANA, West Feliciana, LA
Built 1987 Load: 29.0 t ADT: 10,202
LA0092
FairOver: Lyons Point Gully
0.8 MI W. OF LA 13, Acadia, LA
Built 1975 Load: 29.2 t ADT: 1,354
LA0003
FairOver: LITTLE CYPRESS BAYOU
6.95 MI NORTH OF LA 160, Bossier, LA
Built 1935 Load: 29.2 t ADT: 3,803
US0171
FairOver: DIAMOND GULLY
3.6 MI N OF LA 378-US171, Calcasieu, LA
Built 1996 Load: 29.2 t ADT: 32,659
US0171
FairOver: LITTLE INDIAN BAYOU
4.6 MI N LA378 ON US171, Calcasieu, LA
Built 1997 Load: 29.2 t ADT: 18,040
FDR 900
FairOver: TRIB. CORNEY CREEK
1.79 MI. W. FO LA. 9, Claiborne, LA
Built 1974 Load: 29.2 t ADT: 50
US0171
FairOver: CREEK
0.4 MI. N. OF US 84, De Soto, LA
Built 2009 Load: 29.2 t ADT: 6,525
Power Plant Rd
FairOver: MUNDY BAYOU
0.2 MI E OF LA 3248, De Soto, LA
Built 1983 Load: 29.2 t ADT: 70
Bluebonnet Blvd
FairOver: DAWSON CREEK/BLUEBONNET
2.15 MI N OF BURBANK DR., East Baton Rouge, LA
Built 1978 Load: 29.2 t ADT: 24,300
VERNON EROS RD
FairOver: CASTOR CREEK
8.7 MI. NW INT. 418, Jackson, LA
Built 1994 Load: 29.2 t ADT: 155
LA0099
FairOver: DRAIN
0.7 MI N of LA 1126, Jefferson Davis, LA
Built 1955 Load: 29.2 t ADT: 456
LA0772
FairOver: CREEK
1.5 MI EAST OF US 84, LaSalle, LA
Built 1978 Load: 29.2 t ADT: 116
Anseman Ave
FairOver: CITY PARK LAGOON
0.06 M N OF CITY PK AVE, Orleans, LA
Built 1938 Load: 29.2 t
OLD NATCHITOCHES
FairOver: BLACK BAYOU
0.4 MI SW of I-20, Ouachita, LA
Built 1997 Load: 29.2 t ADT: 300
Showing 3,351-3,400 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 |