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
LA0132
FairOver: HORSE BAYOU
1.4 MI EAST OF LA 135, Richland, LA
Built 1972 Load: 12.3 t ADT: 1,913
Madison St
FairOver: LITTLE BAYOU
0.1MI.EAST OF LAFITT, St. Tammany, LA
Built 1970 Load: 12.3 t
S. Hospital Dr
FairOver: YOUNGS NORTH COULEE
0.16 Mi. S of LA 14, Vermilion, LA
Built 1965 Load: 12.3 t ADT: 870
LOOKOUT ROAD
FairOver: WHISKEY CHITTO CREEK
VE921306, Vernon, LA
Built 1978 Load: 12.3 t ADT: 336
LA0850
FairOver: CREEK
.7 MI NORTH OF LA 849, Caldwell, LA
Built 1936 Load: 12.4 t ADT: 468
LA0568
FairOver: LAKE ST JOHN DRAIN CA
4.8 MI SOUTH OF LA 570, Concordia, LA
Built 1973 Load: 12.4 t ADT: 2,265
Reid Rd
FairOver: CREEK
3 MI SW OF JCT LA 16 & 51, Tangipahoa, LA
Built 1988 Load: 12.4 t ADT: 16
Ohlenforst Rd.
FairOver: WICKOFF BAYOU
1.6 Mi S. of La 98, Acadia, LA
Built 1965 Load: 12.5 t ADT: 28
Lanse De Deshotel
FairOver: DURALD BAYOU
0.6 MI W of LA 371, Evangeline, LA
Built 2004 Load: 12.5 t ADT: 23
LA0087
FairOver: CREEK
1.0 MI E OF LA 3195, Iberia, LA
Built 1955 Load: 12.5 t ADT: 6,957
LA0038
FairOver: CRITTENDON CREEK
LA0038, St. Helena, LA
Built 1952 Load: 12.5 t ADT: 1,535
E. Odell Walker Rd
FairOver: BLACK BRANCH
4 MI SE OF JCT 10 & 1061, Tangipahoa, LA
Built 1985 Load: 12.5 t ADT: 77
Bryce Hyde Rd
FairOver: BIG CREEK
1.7 MI NW OF JCT 10, Tangipahoa, LA
Built 1970 Load: 12.5 t ADT: 20
LA1075
FairOver: SALS BRANCH
0.5 M S OF LA 1074, Washington, LA
Built 1942 Load: 12.5 t ADT: 2,917
LA0528
FairOver: CLARKE BAYOU
2.28 MI EAST OF LA 157, Bossier, LA
Built 1976 Load: 12.6 t ADT: 377
HENDERSON LOOP RD
FairOver: WILDCAT BAYOU
1 M. E. HWY. 65, East Carroll, LA
Built 1970 Load: 12.6 t ADT: 242
FDR 131
FairOver: INDIAN CREEK
NO DATA ENTERED, Grant, LA
Built 1965 Load: 12.6 t ADT: 30
MONGER ROAD
FairOver: CHENE BAYOU
0.2 M E of FARM SUPPLY RD, Jefferson Davis, LA
Built 1979 Load: 12.6 t ADT: 110
DAVE WILLIAMS ROAD
FairOver: BAYOU GRAND MARAIS
2.6 MI E of LA 395, Jefferson Davis, LA
Built 1977 Load: 12.6 t ADT: 50
DAMA LANDRY RD.
FairOver: BAYOU GRAND MARAIS
2.3 MI S of LA 395, Jefferson Davis, LA
Built 1979 Load: 12.6 t ADT: 90
FDR 587
FairOver: CASTOR CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 12.6 t ADT: 60
W. Dunbar Ave.
FairOver: BAYOU TESSON
0.2 Mi W. of La 182, St. Landry, LA
Built 1965 Load: 12.6 t ADT: 1,200
Semmes Rd
FairOver: HEBERT CANAL
1.45 Mi SW of La 82, Vermilion, LA
Built 1978 Load: 12.6 t ADT: 50
S. Hospital Dr
FairOver: YOUNGS SOUTH COULEE
1.2 Mi S of La 14, Vermilion, LA
Built 1965 Load: 12.6 t ADT: 730
Fairview St
FairOver: VALCOURT COULEE
0.15 Mi S of Oak St., Vermilion, LA
Built 1965 Load: 12.6 t ADT: 500
LA0344
FairOver: TECHE BAYOU/MORBIHAN
0.25 MI NORTH OF LA 86, Iberia, LA
Built 1967 Load: 12.7 t ADT: 2,035
EARLE DR
FairOver: PAVED DITCH
JCT of LA 3201@Earle Dr, Franklin, LA
Built 1981 Load: 13.0 t ADT: 300
BALDWIN DR
FairOver: PAVED DITCH
JCT of LA 3201@Baldwin Dr, Franklin, LA
Built 1981 Load: 13.0 t ADT: 300
Eighty Arpent Rd
FairOver: Patout Canal
0.7 miles East of LA 673, Iberia, LA
Built 1967 Load: 13.0 t ADT: 19
LA0020
FairOver: 40 ARPENT CANAL
3.2 MI NORTH OF LA 308, Lafourche, LA
Built 1968 Load: 13.0 t ADT: 20,091
FDR 287
FairOver: BRANCH CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 13.0 t ADT: 60
FDR 287
FairOver: CASTOR CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 13.0 t ADT: 60
LA0742
FairOver: BAYOU DEL PUENT
0.5 MI WEST OF LA 31, St. Landry, LA
Built 1974 Load: 13.0 t ADT: 1,741
8th St
FairOver: RICHARDS GULLY
0.3 Mi N of US 190, St. Landry, LA
Built 1970 Load: 13.0 t ADT: 1,200
LOUISIANA AVENUE
FairOver: BAYOU ZOURIE BRANCH
VE 757 360, Vernon, LA
Built 1978 Load: 13.0 t ADT: 4,500
CLYDE FANT PKWY
FairOver: CROSS BAYOU
0.5 MI EAST OF LA 1-US 71, Caddo, LA
Built 1990 Load: 13.3 t ADT: 11,190
S. ALLADIN RD.
FairOver: LULU CANAL
NO. 664 0.65 MI. S, Cameron, LA
Built 1964 Load: 13.3 t ADT: 27
FDR 145
FairOver: FISH CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 13.3 t ADT: 13
Gallet Rd.
FairOver: DARBY COULEE
2.7 MI SE of LA 92, Lafayette, LA
Built 1982 Load: 13.3 t ADT: 700
NORTH 18TH ST
FairOver: KCS&UNION PACIFIC R/R
0.6 MI NW of I-20, Ouachita, LA
Built 2002 Load: 13.3 t ADT: 19,250
BREARD ST
FairOver: W PRONG YOUNGS BAYOU
BREARD ST MONROE, Ouachita, LA
Built 1970 Load: 13.3 t ADT: 300
BAYOU OAKS DR
FairOver: PATRICKS CANAL
4 MI NE MONROE, Ouachita, LA
Built 1981 Load: 13.3 t ADT: 1,200
Lawrence Road
FairOver: BLACK LAKE BAYOU TRIB.
0.6 MI. NORTH OF LA 155, Red River, LA
Built 1986 Load: 13.3 t ADT: 59
Choctaw Rd
FairOver: Drainage Bayou
0.6 Mi. S. of La 182, St. Landry, LA
Built 1973 Load: 13.3 t ADT: 400
Middle Pearl Dr
FairOver: BAYOU
1.5 M E US190/INDIAN V.RD, St. Tammany, LA
Built 1990 Load: 13.3 t ADT: 200
Bryan St
FairOver: CREEK
.05 MI.E.OF CLEVELAN, St. Tammany, LA
Built 1960 Load: 13.3 t
Cousin St
FairOver: CREEK
0.1.MILE.W.OF. US.19, St. Tammany, LA
Built 1970 Load: 13.3 t
Cousin St
FairOver: CREEK
0.4 MI.EAST OF BUS 1, St. Tammany, LA
Built 1970 Load: 13.3 t
Lock #2 Rd
FairOver: BRUSHY BRANCH
4.5 MI N OF JCT 435 & 41, St. Tammany, LA
Built 1960 Load: 13.3 t ADT: 294
LOOKOUT ROAD
FairOver: BIRDS CREEK
VE 949 320, Vernon, LA
Built 1976 Load: 13.3 t ADT: 336
Showing 1,051-1,100 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 |