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
LA0010
FairOver: CANEY BRANCH
0.8 M E OF LA 1054, Tangipahoa, LA
Built 1955 Load: 15.9 t ADT: 1,335
Leblanc Rd
FairOver: CREEK
6 MI NE OF SR 22 EXI, Tangipahoa, LA
Built 1974 Load: 15.9 t ADT: 4
Needham Rd
FairOver: HOLDEN BRANCH
.01 WEST OF RIVERDALE HT, Tangipahoa, LA
Built 1972 Load: 15.9 t ADT: 4
KLONDYKE BRIDGE
FairOver: TERREBONNE BAYOU
0001 LOG MI FROM INT 243, Terrebonne, LA
Built 1983 Load: 15.9 t ADT: 5,080
Lakeshore
FairOver: RANGE CREEK
LAKESHORE ROAD, Winn, LA
Built 1988 Load: 15.9 t ADT: 91
LA0012
FairOver: CREEK
3.2 MI. E OF LA 27, Beauregard, LA
Built 1931 Load: 16.2 t ADT: 4,041
LA0113
FairOver: CREEK
0.60 MI. N OF LA 112, Beauregard, LA
Built 1972 Load: 16.2 t ADT: 709
LA1147
FairOver: JIM BURNEY BRANCH
0.2 MI NW OF LA 113, Beauregard, LA
Built 1967 Load: 16.2 t ADT: 261
LA1147
FairOver: DRY BRANCH
7.4 MI. NE OF INT LA113, Beauregard, LA
Built 1967 Load: 16.2 t ADT: 624
Sparks-Davis Rd
FairOver: SPKS-DAVS RD.BUCHANAN B.
1.4 M.SO.KVILE SPRGR, Caddo, LA
Built 1975 Load: 16.2 t ADT: 59
LA0101
FairOver: INDIAN BAYOU CANAL
3.0 MI N of LA 14, Calcasieu, LA
Built 1983 Load: 16.2 t ADT: 3,166
LA0914
FairOver: BLACK BAYOU
0.5 Mi E of LA 913, Catahoula, LA
Built 1965 Load: 16.2 t ADT: 77
FDR 613
FairOver: CREEK
LOGMI 1.53 FR 529 TO, Grant, LA
Built 1972 Load: 16.2 t ADT: 43
Back Rd
FairOver: Patout Canal
2.1 Mi. S. of La 673, Iberia, LA
Built 1976 Load: 16.2 t ADT: 18
Broken Arrow Rd
FairOver: Coulee
0.40 Mi NW of La 3212, Iberia, LA
Built 1979 Load: 16.2 t ADT: 35
US0090
FairOver: DRAIN
1.42 MI EAST OF LA 1131, Jefferson Davis, LA
Built 1934 Load: 16.2 t ADT: 4,262
Birdsong Rd.
FairOver: GASTON COULEE
0.02 Mi E of LA 182, Lafayette, LA
Built 1984 Load: 16.2 t ADT: 400
CANAL BLVD
FairOver: LAFOURCHE BAYOU
1 0003 LOG MI FROM I, Lafourche, LA
Built 1966 Load: 16.2 t ADT: 8,737
CANAL BLVD
FairOver: LAFOURCHE BAYOU
0003 LOG MI FROM INT, Lafourche, LA
Built 1966 Load: 16.2 t ADT: 8,110
LA0772
FairOver: HAIRS CREEK
1.0 MI EAST OF US 84, LaSalle, LA
Built 1969 Load: 16.2 t ADT: 116
US0165
FairOver: COULEE BAYOU
2.0 MI EAST OF LA 830-3, Morehouse, LA
Built 1932 Load: 16.2 t ADT: 5,027
FDR 273
FairOver: LITTLE BRUSHY CREEK
NATIONAL FOREST, Rapides, LA
Built 1970 Load: 16.2 t ADT: 30
US0165-B
FairOver: RED RIVER, CITY STS.
0.11 M E OF INT LA 1208-3, Rapides, LA
Built 1985 Load: 16.2 t ADT: 6,865
LA0037
FairOver: TWELVE MILE CREEK
LA0037, St. Helena, LA
Built 1958 Load: 16.2 t ADT: 1,730
Jules Lagrange Rd
FairOver: COULEE DE MARKS
1.58 Mi S of LA 347, St. Landry, LA
Built 1967 Load: 16.2 t ADT: 1,550
Penn Rd
FairOver: COULEE
0.6 Mi S of La 182, St. Mary, LA
Built 1967 Load: 16.2 t ADT: 50
LA0038
FairOver: WILSON CREEK
2.1 Mi NE OF LA 1056, Tangipahoa, LA
Built 1961 Load: 16.2 t ADT: 1,648
Amerada Rd
FairOver: GRAND MARAIS BAYOU
3.0 Mi. SW of La 92, Vermilion, LA
Built 1980 Load: 16.2 t ADT: 160
FDR 400
FairOver: CREEK
6.2 M. ENE. OF ROSEP, Vernon, LA
Built 1970 Load: 16.2 t ADT: 110
FDR 400
FairOver: BIG BOX BRANCH
8.0 M. W. OF CRAVENS, Vernon, LA
Built 1970 Load: 16.2 t ADT: 110
NURSERY RD
FairOver: CANEY CREEK
0.5 MI N of Ward Line Rd, Allen, LA
Built 1970 Load: 16.3 t ADT: 859
Moise Rd
FairOver: New River
0.01 Mi E of LA 429, Ascension, LA
Built 2000 Load: 16.3 t ADT: 10
TANK FARM RD
FairOver: CREEK
0.8 MI W OF LA 397, Calcasieu, LA
Built 1993 Load: 16.3 t ADT: 1,449
STEWARD RD
FairOver: CANAL
0.1 MI W of LA 3112, Calcasieu, LA
Built 1999 Load: 16.3 t ADT: 114
LA0506
FairOver: BLACK BAYOU
.4 MI WEST OF US 165, Caldwell, LA
Built 1953 Load: 16.3 t ADT: 306
LA0124
FairOver: BOGGY BAYOU
.9 MI NORTH OF LA 3102, Catahoula, LA
Built 1960 Load: 16.3 t ADT: 287
LA0004
FairOver: COW CREEK
2.63 MI EAST OF LA 34, Jackson, LA
Built 1952 Load: 16.3 t ADT: 897
LA0542
FairOver: CREEK
2.11 MI EAST OF US 167, Jackson, LA
Built 1959 Load: 16.3 t ADT: 485
LA0155
FairOver: KEPPLER CREEK
1.3 MI EAST OF LA 542, Jackson, LA
Built 1960 Load: 16.3 t ADT: 351
LA0733
FairOver: VERMILION RIVER
1.23 MI EAST OF US 167, Lafayette, LA
Built 1951 Load: 16.3 t ADT: 15,593
Breaux Rd.
FairOver: COULEE
1.5 MI S of LA 724, Lafayette, LA
Built 1970 Load: 16.3 t ADT: 200
LA0127
FairOver: CREEK
1.0 MI NORTH OF LA 460, LaSalle, LA
Built 1950 Load: 16.3 t ADT: 2,211
Bankston Rd S.
FairOver: BLOOD RIVER
0.9 MILES SOUTH OF US 190, Livingston, LA
Built 2006 Load: 16.3 t ADT: 100
LA1024
FairOver: CREEK
2.6 M E OF LA 16, Livingston, LA
Built 1956 Load: 16.3 t ADT: 1,020
Burgess Rd
FairOver: WEST COYELL CREEK
4.8 MI NE OF 3002 EXIT, Livingston, LA
Built 2001 Load: 16.3 t ADT: 800
W. Hubert Stilley
FairOver: TAYLOR BRANCH
9.2 MI NE OF 43 EXIT, Livingston, LA
Built 1960 Load: 16.3 t ADT: 150
LA0576
FairOver: MUDDY BAYOU
6.0 MI SOUTH OF LA 132, Richland, LA
Built 1968 Load: 16.3 t ADT: 162
LA0043
FairOver: COTTON PATCH BRANCH
0.1 M N OF LA 38, St. Helena, LA
Built 1960 Load: 16.3 t ADT: 825
LA0040
FairOver: CREEK
1.4 M W OF LA 1077, St. Tammany, LA
Built 1954 Load: 16.3 t ADT: 2,778
LA0445
FairOver: CREEK
2.3 M N OF LA 40, Tangipahoa, LA
Built 1954 Load: 16.3 t ADT: 1,342
Showing 1,301-1,350 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 |