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
I0020
FairOver: DIVERSION CANAL
3.8 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 44.5 t ADT: 16,997
I0020
FairOver: BEE BAYOU
3.1 MI EAST OF LA 137, Richland, LA
Built 1969 Load: 44.5 t ADT: 38,890
I0020
FairOver: BEE BAYOU
3.1 MI EAST OF LA 137, Richland, LA
Built 1969 Load: 44.5 t ADT: 16,997
I0020
FairOver: BIG CREEK
1.1 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 38,890
I0020
FairOver: BIG CREEK
1.1 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 16,997
I0020
FairOver: LITTLE CREEK
1.9 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 38,890
I0020
FairOver: LITTLE CREEK
1.9 MI EAST OF LA 183, Richland, LA
Built 1971 Load: 44.5 t ADT: 16,997
I0020
FairOver: TURKEY CREEK
3.4 MI EAST OF LA 609, Richland, LA
Built 1970 Load: 44.5 t ADT: 38,890
I0020
FairOver: TURKEY CREEK
3.4 MI EAST OF LA 609, Richland, LA
Built 1970 Load: 44.5 t ADT: 16,997
LA0854
FairOver: LITTLE CREEK
4.8 MI E of LA 183, Richland, LA
Built 2002 Load: 44.5 t ADT: 529
I0012
FairOver: YELLOW WATER RIVER REL.
I0012, Tangipahoa, LA
Built 1970 Load: 44.5 t ADT: 21,736
LA0002
FairOver: CORNEY BAYOU
3.3 MI WEST OF LA 15, Union, LA
Built 1964 Load: 44.5 t ADT: 2,520
LA3147
FairOver: PIPELINE CANAL
9.0 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 44.5 t ADT: 221
LA3147
FairOver: OIL FIELD CANAL
8.82 MI S. OF LA 82, Vermilion, LA
Built 1982 Load: 44.5 t ADT: 221
Jimmy Brown Rd
FairOver: BIG BAYOU
0.67 MI. SOUTH OF LA 1, Rapides, LA
Built 2002 Load: 44.7 t ADT: 450
LA0002
FairOver: FIVE-MILE-SLOUGH
LA0002, West Carroll, LA
Built 1981 Load: 44.7 t ADT: 2,350
George Lambert Rd
FairOver: NEW RIVER
46 Ft N Of LA 429, Ascension, LA
Built 1984 Load: 45.0 t ADT: 300
LA0012
FairOver: OLD RIVER SLOUGH
4.5 MI W OF LA 109, Calcasieu, LA
Built 2022 Load: 45.0 t ADT: 4,600
E. Roosevelt St
FairOver: CORPORATION CANAL
52' W OF THOMAS DELPIT DR, East Baton Rouge, LA
Built 1967 Load: 45.0 t ADT: 914
Groom Rd
FairOver: CYPRESS BAYOU
0.3 M W OF LA 19, East Baton Rouge, LA
Built 1977 Load: 45.0 t ADT: 2,522
FLORIDA AVE
FairOver: CORINNE CANAL
1.2 MI N OF LA 39, St. Bernard, LA
Built 2011 Load: 45.0 t ADT: 90
LA0448
FairOver: STROTHER CREEK
2.0 M N OF LA 37, St. Helena, LA
Built 1962 Load: 45.0 t ADT: 547
Williams Ave
FairOver: DRAIN CANAL
HOLLYWOOD RD AT WILLIAMS, Terrebonne, LA
Built 2004 Load: 45.0 t ADT: 6,696
I0210
FairOver: LOUISIANA STREET
0.8 MI. E. OF LA 385, Calcasieu, LA
Built 1975 Load: 45.4 t ADT: 30,773
I0210
FairOver: LOUISIANA STREET
1.6 MI W OF LA 14, Calcasieu, LA
Built 1975 Load: 45.4 t ADT: 30,723
I0210
FairOver: ENTERPRISE BOULEVARD
.86 MI EAST OF LA 385, Calcasieu, LA
Built 1975 Load: 45.4 t ADT: 608
US0171
FairOver: COOK CREEK
7.6 MI. N. OF US 84, De Soto, LA
Built 2000 Load: 45.4 t ADT: 6,256
US0171
FairOver: RAMBIN BAYOU
6.4 MI. N. OF LA 3015, De Soto, LA
Built 2000 Load: 45.4 t ADT: 6,956
LA0019
FairOver: BAYOU
2.3 M NE of LA 19&US 61, East Baton Rouge, LA
Built 1977 Load: 45.4 t ADT: 22,663
I0010
FairOver: W BAYOU CHENE
2.0 MI. E. OF LA 395, Jefferson Davis, LA
Built 1965 Load: 45.4 t ADT: 838
I0010
FairOver: CHENE BAYOU
2.6 MI WEST OF LA 26, Jefferson Davis, LA
Built 1965 Load: 45.4 t ADT: 11,635
Sylvia Rd.
FairOver: COULEE
0.40 Mi S of US 90, Lafayette, LA
Built 1989 Load: 45.4 t ADT: 53
I0020
FairOver: BAYOU DESPAIR
6.0 MI WEST OF US 65, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: BAYOU DESPAIR
6.0 MI WEST OF US 65, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: LAKE ONE BAYOU
2.8 MI WEST OF US 65, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: LAKE ONE BAYOU
2.8 MI WEST OF US 65, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: PANOLA BAYOU
2.2 MI WEST OF US 65, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: PANOLA BAYOU
2.2 MI WEST OF US 65, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: WALNUT BAYOU
.01 MI WEST OF WEST INT O, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: WALNUT BAYOU
.01 MI WEST OF WEST INT O, Madison, LA
Built 1975 Load: 45.4 t ADT: 31,481
I0020
FairOver: DRAINAGE CANAL
1.3 MI EAST OF WEST INT O, Madison, LA
Built 1975 Load: 45.4 t ADT: 30,064
I0020
FairOver: DRAINAGE CANAL BRIDGE
1.3 MI EAST OF WEST INT O, Madison, LA
Built 1975 Load: 45.4 t ADT: 29,961
I0020
FairOver: CYPRESS BAYOU BRIDGE
.7 MI EAST OF EAST INT OF, Madison, LA
Built 1975 Load: 45.4 t ADT: 28,276
LA0490
FairOver: LA 490 BAYOU BOURBEAUX
2.3 MI. E OF LA 1 & LA 49, Natchitoches, LA
Built 1996 Load: 45.4 t ADT: 138
I0010
FairOver: LAWRENCE CANAL
2.0 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 45.4 t ADT: 114,172
I0010
FairOver: LAWRENCE CANAL
2.0 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 45.4 t ADT: 1,600
I0010 SERVICE RD
FairOver: LAWRENCE CANAL
2.0 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 45.4 t ADT: 4,380
I0010
FairOver: LAWRENCE CANAL
2.0 MI EAST OF US 90, Orleans, LA
Built 1970 Load: 45.4 t ADT: 6,735
I0020
FairOver: YOUNGS BAYOU
.7 MI EAST OF LA 594, Ouachita, LA
Built 1965 Load: 45.4 t ADT: 31,285
LA0113
FairOver: TEN MILE CREEK RELIEF
0.79 MI. WEST OF LA 462, Rapides, LA
Built 1984 Load: 45.4 t ADT: 822
Showing 6,201-6,250 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 |