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
Joe Sevario Rd
Structurally DeficientOver: Sides Bayou
0.8 Mi S. of LA 933, Ascension, LA
Built 1969 Load: 16.8 t ADT: 700
US0080
Structurally DeficientOver: CROWS CREEK
1.98 MI NORTH OF I-20, Bienville, LA
Built 1954 Load: 16.8 t ADT: 780
Cedarcrest Ave
Structurally DeficientOver: WEINER CREEK
1 MI S OF LA 426, East Baton Rouge, LA
Built 1965 Load: 16.8 t ADT: 12,417
Troy St
Structurally DeficientOver: DRAIN BAYOU
TROY STREET, East Baton Rouge, LA
Built 1975 Load: 16.8 t ADT: 600
Carney Rd
Structurally DeficientOver: BAYOU BATON ROUGE
0.2 M W OF LA 964, East Baton Rouge, LA
Built 1965 Load: 16.8 t ADT: 180
US0071
Structurally DeficientOver: SALINE BAYOU
.7 MI. N OF INT LA477, Natchitoches, LA
Built 1956 Load: 16.8 t ADT: 1,691
LA0970
Structurally DeficientOver: CREEK
1.40 M E of LA 417, Pointe Coupee, LA
Built 1971 Load: 16.8 t ADT: 84
L Williams Rd
Structurally DeficientOver: UNAMED CREEK
0.7 M N of LA 961, East Feliciana, LA
Built 1975 Load: 17.0 t ADT: 304
Tom Crichton Rd
Structurally DeficientOver: MILE CREEK
0.3 MI W OF HWY 7, Webster, LA
Built 1976 Load: 17.0 t ADT: 49
Ridge Rd
Structurally DeficientOver: CASTOR CREEK
1.8 MI. EAST OF LA 4, Bienville, LA
Built 1976 Load: 17.1 t ADT: 100
Grover Jones Rd
Structurally DeficientOver: BAKER CREEK
2.7 MI. S.E. OF U.S., Bienville, LA
Built 1977 Load: 17.1 t ADT: 150
ARDOIN COVE ROAD
Structurally DeficientOver: CREEK
1.9 M EAST OF INT 262, Jefferson Davis, LA
Built 1990 Load: 17.1 t ADT: 50
Shingle Mill Rd
Structurally DeficientOver: ANDERSON CANAL
0.3 N. OF RT. 142 MILLRD, Tangipahoa, LA
Built 1975 Load: 17.1 t ADT: 10
Sibley Rd
Structurally DeficientOver: MORAN BRANCH
4 MI SW OF 442 EXIT, Tangipahoa, LA
Built 1960 Load: 17.1 t ADT: 204
US0071
Structurally DeficientOver: ICG RR
.5 MI NORTH OF I-20, Caddo, LA
Built 1940 Load: 17.2 t ADT: 5,484
Line Rd
Structurally DeficientOver: BLACK CREEK
1.6 Mi. S. of LA 10, East Feliciana, LA
Built 1982 Load: 17.2 t ADT: 126
MCLEMORE RD
Structurally DeficientOver: BEE BAYOU
LOGMI 5.05 FR 0DE TO, Richland, LA
Built 1966 Load: 17.2 t ADT: 320
LA0008
Structurally DeficientOver: FORKER CREEK
0.1 M E OF W JCT. LA 111, Vernon, LA
Built 1950 Load: 17.2 t ADT: 1,229
LA0169
Structurally DeficientOver: TWELVE MILE BAYOU
1.6 MI EAST OF LA 1, Caddo, LA
Built 1955 Load: 17.5 t ADT: 311
LA0170
Structurally DeficientOver: BLACK BAYOU
7.99 MI EAST OF LA 1, Caddo, LA
Built 1977 Load: 17.5 t ADT: 1,209
S Campus Dr
Structurally DeficientOver: CORPORATION CANAL
L.S.U. CAMPUS (STATE), East Baton Rouge, LA
Built 1955 Load: 17.5 t ADT: 16,457
Carey Rd
Structurally DeficientOver: BLACKWATER BAYOU
0.4 Mi W of LA 410, East Baton Rouge, LA
Built 1960 Load: 17.5 t ADT: 1,137
Pettit Rd
Structurally DeficientOver: WHITE BAYOU
0.3 MI E of LA 67, East Baton Rouge, LA
Built 1965 Load: 17.5 t ADT: 2,544
FDR 145
Structurally DeficientOver: DYSON CREEK
NO DATA ENTERED, Grant, LA
Built 1972 Load: 17.5 t ADT: 30
Holiday Dr
Structurally DeficientOver: ALGIERS CANAL
0.01MI. E OF DEGAULLE AV., Orleans, LA
Built 1958 Load: 17.5 t
LA0001
Structurally DeficientOver: BAYOU MOREAU
2.2 M NW of LA 970, Pointe Coupee, LA
Built 1957 Load: 17.5 t ADT: 3,289
Will White Rd
Structurally DeficientOver: SPANISH BRANCH
1.19 M. S. PINE COUPEE RD, Rapides, LA
Built 1970 Load: 17.5 t ADT: 140
FALGOUT CANAL RD
Structurally DeficientOver: GRAND CAILLOU BAYOU
0.04 MI W OF LA 57, Terrebonne, LA
Built 1976 Load: 17.5 t ADT: 363
LA0507
Structurally DeficientOver: CREEK
0.1M SW OF LA 797, Bienville, LA
Built 1993 Load: 17.8 t ADT: 845
FDR 102
Structurally DeficientOver: SHADY CREEK
NO DATA ENTERED, Grant, LA
Built 1965 Load: 17.8 t ADT: 12
Old Spanish Trail
Structurally DeficientOver: ILE DES CANNES COULEE
1.5 Mi. W. of LA 93, Lafayette, LA
Built 1978 Load: 17.8 t ADT: 360
LA3033
Structurally DeficientOver: CHENIERE SPILLWAY
3.84 MI NORTH OF LA 34, Ouachita, LA
Built 1947 Load: 17.8 t ADT: 5,669
LA0002
Structurally DeficientOver: CREEK
6.2 MI EAST OF LA 33, Union, LA
Built 1931 Load: 17.8 t ADT: 6,236
Roy Rd.
Structurally DeficientOver: BLANC BAYOU
0.7 Mi. S. of US 90, Acadia, LA
Built 1965 Load: 18.1 t ADT: 28
Boyce Tower Rd
Structurally DeficientOver: CONWAY BAYOU
0.8 M W of US 61, Ascension, LA
Built 1965 Load: 18.1 t ADT: 5
LA0153
Structurally DeficientOver: TOPY CREEK RELIEF
2.60 MI NORTH OF LA 155, Bienville, LA
Built 1975 Load: 18.1 t ADT: 1,377
Domino Rd
Structurally DeficientOver: CHOCTAW CREEK
1.5 MI W OF LA 147, Bienville, LA
Built 1977 Load: 18.1 t ADT: 100
LA0376
Structurally DeficientOver: BAYOU
3.5 MI WEST OF LA 13, Evangeline, LA
Built 1967 Load: 18.1 t ADT: 104
Monnot Rd
Structurally DeficientOver: DELAHOUSSAYE CANAL
0.10 Mi SW of La 668, Iberia, LA
Built 1966 Load: 18.1 t ADT: 90
FLAT CR RD
Structurally DeficientOver: FLAT CREEK
1 MI. ENE INT. 461, Jackson, LA
Built 1965 Load: 18.1 t
LA0653
Structurally DeficientOver: BAYOU DUMAR
3.7 MI EAST OF LA 182, Lafourche, LA
Built 1960 Load: 18.1 t ADT: 273
LA0485
Structurally DeficientOver: LITTLE RIVER RELIEF
3.34 MI. NORTH OF LA 6, Natchitoches, LA
Built 1956 Load: 18.1 t ADT: 508
US0080
Structurally DeficientOver: BOEUF RIVER
.4 MI EAST OF LA 133, Richland, LA
Built 1958 Load: 18.1 t ADT: 2,747
Palmer Ln
Structurally DeficientOver: CREEK
WEST OF BROWN LANE, Tangipahoa, LA
Built 1980 Load: 18.1 t ADT: 8
LA0331
Structurally DeficientOver: CREEK
2.1 Mi S. of LA 14, Vermilion, LA
Built 1940 Load: 18.1 t ADT: 1,518
LA0585
Structurally DeficientOver: CREEK
.9 MI WEST OF LA 577, West Carroll, LA
Built 1948 Load: 18.1 t ADT: 422
LA0147
Structurally DeficientOver: DRY CREEK
0.4 MI S OF LA 507, Bienville, LA
Built 1980 Load: 18.5 t ADT: 1,988
HENDERSON BAYOU RD
Structurally DeficientOver: HENDERSON BAYOU
.2 MI W of W PRIEN LAKE R, Calcasieu, LA
Built 1960 Load: 18.5 t ADT: 1,869
S Campus Dr
Structurally DeficientOver: CORPORATION CANAL
L.S.U CAMPUS, East Baton Rouge, LA
Built 1955 Load: 18.5 t
Gurney Rd
Structurally DeficientOver: DRAINAGE BAYOU
0.8 Mi E of LA 410, East Baton Rouge, LA
Built 1966 Load: 18.5 t ADT: 4,025
Showing 12,501-12,550 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 |