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
LA0066
FairOver: JONES BRANCH
LA0066, West Feliciana, LA
Built 1959 Load: 17.2 t ADT: 4,492
W. Northern Rd
FairOver: Crowley Drainage Ditch
1.4 Mi. W. of LA 13, Acadia, LA
Built 1982 Load: 17.5 t ADT: 2,880
Buxton Rd
FairOver: NEW RIVER
112 Ft N Of LA 429, Ascension, LA
Built 1979 Load: 17.5 t ADT: 100
LA0108
FairOver: BAYOU
4.4 MI SOUTH OF I-10, Calcasieu, LA
Built 1961 Load: 17.5 t ADT: 1,259
Clifford Ezell Rd
FairOver: WEST TURKEY CREEK
LOG MILE 1.75 FR 233 TO O, Franklin, LA
Built 2013 Load: 17.5 t ADT: 30
FDR 120
FairOver: GRAY BRANCH
NO DATA ENTERED, Grant, LA
Built 1970 Load: 17.5 t ADT: 30
LA0505
FairOver: BIG CREEK
2.9 MI EAST OF LA 809, Jackson, LA
Built 1975 Load: 17.5 t ADT: 759
Bayou Tortue Rd.
FairOver: TORTUE BAYOU
2.60 Mi NW of LA 96, Lafayette, LA
Built 1967 Load: 17.5 t ADT: 300
Maryview Farm Rd.
FairOver: VERMILION RIVER
0.56 Mi N of i-10, Lafayette, LA
Built 1977 Load: 17.5 t ADT: 340
LA0182
FairOver: HOLLYWOOD CANAL
.68 MI EAST OF LA 316, Lafourche, LA
Built 1957 Load: 17.5 t ADT: 7,322
LA3185
FairOver: DRAIN CANAL
1.7 MI WEST OF LA 3107, Lafourche, LA
Built 1969 Load: 17.5 t ADT: 12,957
LA3185
FairOver: DRAIN CANAL
2.0 MI WEST OF LA 3107, Lafourche, LA
Built 1969 Load: 17.5 t ADT: 12,957
PRK ROAD
FairOver: SLOUGH
1.1 MI. SOUTH OF LA 1037, Livingston, LA
Built 1997 Load: 17.5 t
FDR 360
FairOver: L'IVROGNE BRANCH
6.6 M. WSW. OF GORUM, Natchitoches, LA
Built 1978 Load: 17.5 t ADT: 30
LA0107
FairOver: SPRING BAYOU
1.02 MI EAST OF LA 361, St. Landry, LA
Built 1972 Load: 17.5 t ADT: 1,214
Heather St
FairOver: Drainage Canal
0.4 Mi. E. of La 182, St. Landry, LA
Built 1976 Load: 17.5 t ADT: 1,200
LA0182
FairOver: HANSON CANAL
2.07 MI SOUTH OF LA 87, St. Mary, LA
Built 1930 Load: 17.5 t ADT: 6,242
LA0319
FairOver: INTRACOASTAL CANAL
1.6 MI SOUTH OF LA 83, St. Mary, LA
Built 2005 Load: 17.5 t ADT: 914
LA0442
FairOver: NAT. RIVER RELIEF
LA0442, Tangipahoa, LA
Built 1963 Load: 17.5 t ADT: 5,026
N BAYOU BLACK DR
FairOver: TERR. LAF. DRAINAGE
1.0 MI E OF SAM RAPP ST., Terrebonne, LA
Built 1966 Load: 17.5 t ADT: 1,248
Miller St
FairOver: TRIBUTARY TO MILE CREEK
0.5 MI N OF HWY 79-8, Webster, LA
Built 1965 Load: 17.5 t ADT: 520
LA0013
FairOver: LONG POINT GULLY
1.2 MI SOUTH OF LA 98, Acadia, LA
Built 1960 Load: 17.8 t ADT: 5,380
US0165
FairOver: DRAIN
10.0 MI. N. OF LA 26, Allen, LA
Built 1931 Load: 17.8 t ADT: 11,886
S Purpera Ave
FairOver: FRANCOIS LAT
0.04 Mi. N. of LA 30, Ascension, LA
Built 1976 Load: 17.8 t ADT: 750
US0090
FairOver: BAYOU BOEUF
ASSUMPTION PH LN US 90, Assumption, LA
Built 1998 Load: 17.8 t ADT: 10,035
LA1147
FairOver: SHORT PRONG
6.32 MI. N OF INT LA113, Beauregard, LA
Built 1967 Load: 17.8 t ADT: 624
Johns Gin Rd.
FairOver: Trib to Mill Creek
0.8 Mi S Keatchie-Marshal, Caddo, LA
Built 1982 Load: 17.8 t ADT: 58
Barnette Road
FairOver: TRIBUTARY TO WALNUT B.
0.1 MI EAST OF LA 538, Caddo, LA
Built 1983 Load: 17.8 t ADT: 40
LA0126
FairOver: CREEK
2.1 MI S OF LA 8, Catahoula, LA
Built 1971 Load: 17.8 t ADT: 878
LA0533
FairOver: GEE CREEK
6.58 MI NORTH OF LA 519, Claiborne, LA
Built 1976 Load: 17.8 t ADT: 21
US0190
FairOver: LIVELY BAYOU
US0190, East Baton Rouge, LA
Built 1961 Load: 17.8 t ADT: 17,284
LA0955
FairOver: WHITE BAYOU
LA0955, East Feliciana, LA
Built 1962 Load: 17.8 t ADT: 3,045
LA0412
FairOver: Black Creek
2.96 Mi. E. of LA 412, East Feliciana, LA
Built 1963 Load: 17.8 t ADT: 1,710
LA0959
FairOver: SANDY CREEK
4.0 Mi. E. of LA 958, East Feliciana, LA
Built 1957 Load: 17.8 t ADT: 1,679
US0167
FairOver: CHOCTAW BAYOU
1.5 MI NORTH OF LA 376, Evangeline, LA
Built 1963 Load: 17.8 t ADT: 3,239
FDR 102
FairOver: LOG BAYOU
NO DATA ENTERED, Grant, LA
Built 1965 Load: 17.8 t ADT: 12
FDR 145
FairOver: BIG CREEK
NO DATA ENTERED, Grant, LA
Built 1970 Load: 17.8 t ADT: 37
S. Bernard Rd
FairOver: DES POCHES COULEE
0.6 Mi. SW of US 90, Lafayette, LA
Built 1975 Load: 17.8 t ADT: 1,020
LA3185
FairOver: DRAIN CANAL
1.0 MI WEST OF LA 3107, Lafourche, LA
Built 1969 Load: 17.8 t ADT: 12,957
US0084
FairOver: HEMP CREEK
.5 MI EAST OF LA 127, LaSalle, LA
Built 1955 Load: 17.8 t ADT: 5,122
FDR 304
FairOver: GIN BRANCH
NATIONAL FOREST ROAD, Natchitoches, LA
Built 1967 Load: 17.8 t ADT: 30
FDR 360
FairOver: BAYOU L'IVROGNE
6.5 M. WSW.OF GORUM,, Natchitoches, LA
Built 1978 Load: 17.8 t ADT: 30
FDR 360
FairOver: STEEP BRANCH
5.8 M. WNM. OF GORUM, Natchitoches, LA
Built 1975 Load: 17.8 t ADT: 30
LA0039
FairOver: INDUSTRIAL CANAL
0.1 MI E OF INDUSTRIAL C., Orleans, LA
Built 1957 Load: 17.8 t ADT: 47,739
EDWARD HEBERT BLVD
FairOver: PLANTERS CANAL
0.5 MI. E. OF HWY. 406, Plaquemines, LA
Built 1977 Load: 17.8 t ADT: 860
LA0081
FairOver: W-11 LATERAL #2
1.97 M W of LA 77, Pointe Coupee, LA
Built 1969 Load: 17.8 t ADT: 231
FDR 247
FairOver: NORTH FORK BAYOU CLEAR
NO DATA ENTERED, Rapides, LA
Built 1970 Load: 17.8 t ADT: 30
FDR 287
FairOver: LOVING CREEK
NATIONAL FOREST ROAD, Rapides, LA
Built 1963 Load: 17.8 t ADT: 60
Duchamp Rd
FairOver: LASALLE COULEE
1.1 Mi. NE of La 182, St. Martin, LA
Built 1966 Load: 17.8 t ADT: 1,388
Patin St.
FairOver: TRUE CANAL
0.4 Mi. N of LA 352, St. Martin, LA
Built 1967 Load: 17.8 t ADT: 128
Showing 1,451-1,500 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 |