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
Old Genessee Rd
Structurally DeficientOver: CREEK
3 MI SE OF LA RT 442, Tangipahoa, LA
Built 1960 Load: 14.5 t ADT: 406
LA0463
Structurally DeficientOver: TEN MILE CREEK
10.99 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 14.5 t ADT: 482
VIDRINE RD.
Structurally DeficientOver: BAYOU
0.5 MI N of US 165, Jefferson Davis, LA
Built 1970 Load: 14.6 t ADT: 60
Brandon Cotton Rd
Structurally DeficientOver: TERRE BLANC BAYOU
0.73 M. W. OF LA 485, Natchitoches, LA
Built 1981 Load: 14.6 t ADT: 92
I0010
Structurally DeficientOver: RAMP B. OFF RAMP
5.66 MI W of LA 975, St. Martin, LA
Built 1971 Load: 14.6 t ADT: 970
LA0182
Structurally DeficientOver: BAYOU TERREBONNE
0.1 MI EAST OF LA 24 WEST, Terrebonne, LA
Built 1954 Load: 14.6 t ADT: 3,687
LA0159
Structurally DeficientOver: CYPRESS CREEK
3.6 MI NORTH OF LA 615, Webster, LA
Built 1966 Load: 14.6 t ADT: 866
Penton road
Structurally DeficientOver: MILE BR.
0.3 MI. N. OF HWY. 4, Washington, LA
Built 1970 Load: 14.7 t ADT: 3,200
FDR 909
Structurally DeficientOver: DARBONNE NW FORK
NATIONAL FOREST ROAD, Claiborne, LA
Built 1978 Load: 14.9 t ADT: 5
LA0008
Structurally DeficientOver: BIG CREEK
3.02 MI. EAST OF US 165, Grant, LA
Built 1968 Load: 14.9 t ADT: 1,590
Bridge Rd
Structurally DeficientOver: BAYOU GROSSE TETE
130 FT E OF LA 77, Pointe Coupee, LA
Built 1979 Load: 14.9 t ADT: 1,540
FDR 240
Structurally DeficientOver: BRUSHY CREEK
NO DATA ENTERED, Rapides, LA
Built 1980 Load: 14.9 t ADT: 30
Auguillard Rd
Structurally DeficientOver: COULEE
0.2 Mi. N. of La 347, St. Martin, LA
Built 1975 Load: 14.9 t ADT: 40
Hubbs Rd
Structurally DeficientOver: BEAVER BAYOU
1.8 MI. S. of 64, East Baton Rouge, LA
Built 1968 Load: 15.2 t ADT: 1,386
LA0955
Structurally DeficientOver: Sessions Bayou
2.7 Mi S of La 10, East Feliciana, LA
Built 1966 Load: 15.2 t ADT: 989
REEDS BRIDGE RD
Structurally DeficientOver: CALCASIEU RIVER RELIEF
1.8 MI WEST OF US 165, Allen, LA
Built 1960 Load: 15.4 t ADT: 132
Shirley Plant Rd
Structurally DeficientOver: BAYOU BEOUF
0.29 MI. WEST OF LA 1177, Avoyelles, LA
Built 1978 Load: 15.4 t ADT: 43
LA0024
Structurally DeficientOver: CO. CANAL (BOURG)
1.20 MI W OF LA 24, Terrebonne, LA
Built 1951 Load: 15.4 t ADT: 8,645
LA0339
Structurally DeficientOver: Laports Coulee
1.3 Miles North OF LA 14, Vermilion, LA
Built 1950 Load: 15.4 t ADT: 4,990
LA0967
Structurally DeficientOver: MILL CREEK
2.9 M N of LA 957&LA 421, West Feliciana, LA
Built 1955 Load: 15.4 t ADT: 251
LA0655
Structurally DeficientOver: BAYOU LAFOURCHE
.79 MI EAST OF LA 1, Lafourche, LA
Built 1940 Load: 15.6 t ADT: 2,380
Doshie Rd
Structurally DeficientOver: CHERRY WINCHE CREEK TRIB
1.1 MILES NORTH OF LA 112, Rapides, LA
Built 1978 Load: 15.6 t ADT: 100
LAKE FAUSSE ST PK
Structurally DeficientOver: LAKE FAUSSE POINT
.16 MI S of Levee Rd, St. Martin, LA
Built 1980 Load: 15.6 t ADT: 66
LA0026
Structurally DeficientOver: CREEK
4.1 MI E of LA 377, Allen, LA
Built 1968 Load: 15.9 t ADT: 2,151
LA0114
Structurally DeficientOver: BELLDEAU BAYOU
3.07 MILES SE OF LA 1, Avoyelles, LA
Built 1973 Load: 15.9 t ADT: 2,890
Winfield Rd
Structurally DeficientOver: Connell Branch
2.0 MI N OF US HWY 8, Bossier, LA
Built 1960 Load: 15.9 t ADT: 340
US0071
Structurally DeficientOver: ICG RR
.5 MI NORTH OF I-20, Caddo, LA
Built 1940 Load: 15.9 t ADT: 5,484
LA0534
Structurally DeficientOver: BLACK BAYOU
2.9 MI NORTH OF LA 534-S, Claiborne, LA
Built 1973 Load: 15.9 t ADT: 118
Monterrey Blvd
Structurally DeficientOver: JONES CREEK
0.70 MI N OF US 190, East Baton Rouge, LA
Built 1960 Load: 15.9 t ADT: 5,630
Port Hudson-Pride
Structurally DeficientOver: WHITE BAYOU
1.5 M E OF LA 964, East Baton Rouge, LA
Built 1970 Load: 15.9 t ADT: 2,080
Mullins Rd
Structurally DeficientOver: Tete Bayou
0.7 Mi N. of La 87, Iberia, LA
Built 1967 Load: 15.9 t ADT: 254
ABELL ROAD
Structurally DeficientOver: GULLY
3.7 MI. E. OF INT. 1, Jefferson Davis, LA
Built 1976 Load: 15.9 t ADT: 50
Beamow
Structurally DeficientOver: BAYOU MARINGOUIN
MARINGOUIN, Pointe Coupee, LA
Built 1973 Load: 15.9 t ADT: 110
LA1243
Structurally DeficientOver: FLAT BAYOU
2.7 MI. N OF LA488, Rapides, LA
Built 1980 Load: 15.9 t ADT: 2,861
LA0182
Structurally DeficientOver: ATCHAF.R/BERWICK BAY
1.4 MI WEST OF US 90, St. Mary, LA
Built 1933 Load: 15.9 t ADT: 12,788
Fannie Powell Rd
Structurally DeficientOver: CREEK
1.3 MI S OF JCT 440 &1057, Tangipahoa, LA
Built 1970 Load: 15.9 t ADT: 8
N. River Rd
Structurally DeficientOver: IRVING BRANCH
1.40 M N of LA 38, Tangipahoa, LA
Built 1975 Load: 15.9 t ADT: 141
LA0934
Structurally DeficientOver: BLACK BAYOU
0.6 Mi. E of LA 44, Ascension, LA
Built 1971 Load: 16.2 t ADT: 5,367
LA0076
Structurally DeficientOver: STREAM NO NAME
0.9 MI W of LA 1, West Baton Rouge, LA
Built 1930 Load: 16.2 t ADT: 6,347
US0080
Structurally DeficientOver: KCS RR
5.9 MI EAST PF I-220, Caddo, LA
Built 1927 Load: 16.3 t ADT: 11,856
Spec Garig Rd
Structurally DeficientOver: LITTLE COMITE CREEK
0.9 M E of LA 19, East Feliciana, LA
Built 1965 Load: 16.3 t ADT: 40
6TH ST
Structurally DeficientOver: KEYHOLE CANAL
260' East of Avenue H, Jefferson, LA
Built 1960 Load: 16.3 t ADT: 200
PECAN ORCHARD ROAD
Structurally DeficientOver: EAST BAYOU LACASSINE
0.3 MI E of LA 99, Jefferson Davis, LA
Built 1965 Load: 16.3 t ADT: 50
LA0485
Structurally DeficientOver: LITTLE RIVER RELIEF
3.85 MI. NORTH OF LA 6, Natchitoches, LA
Built 1956 Load: 16.3 t ADT: 508
Sibley Rd
Structurally DeficientOver: CREEK
4 MI SE OF JCT 190 &, Tangipahoa, LA
Built 1974 Load: 16.3 t ADT: 611
LA0463
Structurally DeficientOver: BRUSHY CREEK
6.3 MI NORTH OF LA 10, Vernon, LA
Built 1944 Load: 16.3 t ADT: 482
Doc Steed Rd
Structurally DeficientOver: SAUSMAN CREEK
3.5 MI S OF HWY 7, Webster, LA
Built 1979 Load: 16.3 t ADT: 159
Muddy Creek Rd
Structurally DeficientOver: MUDDY CREEK
.8 MI.N.OF LA44, LA4, Ascension, LA
Built 1978 Load: 16.5 t ADT: 150
Buchanan St
Structurally DeficientOver: CORPORATION CANAL
.01 Mi W. of Highland Rd, East Baton Rouge, LA
Built 1960 Load: 16.5 t ADT: 2,500
LA0001-X
Structurally DeficientOver: CANE RIVER
.01 MI. S OF INT LA1224, Natchitoches, LA
Built 1936 Load: 16.5 t ADT: 6,362
Showing 12,451-12,500 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 |