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
LA1063
FairOver: MORGAN BRANCH
LA1063, Tangipahoa, LA
Built 1962 Load: 23.6 t ADT: 1,130
LA1063
FairOver: MORGAN BRANCH
1.5 M N OF LA 442, Tangipahoa, LA
Built 1962 Load: 23.6 t ADT: 1,130
LA0575
FairOver: CYPRESS BAYOU
.1 MI EAST OF LA 888, Tensas, LA
Built 1962 Load: 23.6 t ADT: 26
LA0550
FairOver: CREEK
3.8 MI NORTH OF LA 2, Union, LA
Built 1971 Load: 23.6 t ADT: 464
Gladu Road
FairOver: Coulee
0.4 Mi. West of 343, Vermilion, LA
Built 2009 Load: 23.6 t ADT: 350
LA0014
FairOver: BAYOU TIGRE
0.2 Mi. West OF LA 331, Vermilion, LA
Built 1957 Load: 23.6 t ADT: 13,088
LA0699
FairOver: BAYOU GRAND MARAIS
1.4 MI S. OF LA 92, Vermilion, LA
Built 1962 Load: 23.6 t ADT: 442
LA0330
FairOver: YOUNGS COULEE
3.75 MI S. OF LA 82, Vermilion, LA
Built 1959 Load: 23.6 t ADT: 1,814
LA1211
FairOver: MILL CREEK
4.31 MILES WEST OF US 171, Vernon, LA
Built 1958 Load: 23.6 t ADT: 2,663
LA0438
FairOver: SILVER CREEK
LA0438, Washington, LA
Built 1960 Load: 23.6 t ADT: 688
LA0438
FairOver: BOGUE CHITTO BR
LA0438, Washington, LA
Built 1960 Load: 23.6 t ADT: 688
LA0438
FairOver: MUD CREEK
LA0438, Washington, LA
Built 1959 Load: 23.6 t ADT: 666
LA1056
FairOver: DEER LICK CREEK
1.1 M E OF LA 450, Washington, LA
Built 1966 Load: 23.6 t ADT: 1,008
LA1056
FairOver: DELANY BRANCH
4.8 M E OF LA 450, Washington, LA
Built 1966 Load: 23.6 t ADT: 1,008
LA1056
FairOver: WILDBLOOD BRANCH
LA1056, Washington, LA
Built 1966 Load: 23.6 t ADT: 993
LA0439
FairOver: DRAIN
2.9 M W OF LA 60, Washington, LA
Built 1955 Load: 23.6 t ADT: 1,235
LA0620
FairOver: BAYOU CLAUSA
LA0620, West Baton Rouge, LA
Built 1958 Load: 23.6 t ADT: 2,107
LA0588
FairOver: ALLIGATOR BAYOU
2.85 MI E of LA 17, West Carroll, LA
Built 1963 Load: 23.6 t ADT: 171
LA0965
FairOver: GRANTS BAYOU
1.3 M E of US 61&LA 965, West Feliciana, LA
Built 1959 Load: 23.6 t ADT: 2,133
OLD PUMP RD
FairOver: CALCASIEU RIVER RELIEF
0.8 MI. W. OF CHAPPEL RD, Allen, LA
Built 2009 Load: 23.7 t ADT: 581
S RIVER RD
FairOver: CURTIS CREEK
2.2 MI WEST OF US165, Allen, LA
Built 1982 Load: 23.7 t ADT: 60
RIVER RD
FairOver: NORTH CREEK #2
0.7 MI NORTH OF LA 10, Allen, LA
Built 2003 Load: 23.7 t ADT: 140
LA0112
FairOver: CREEK
1.4 MI NE of US 171, Beauregard, LA
Built 1956 Load: 23.7 t ADT: 718
LA0783
FairOver: GRAND BAYOU
2.48 MI WEST OF US 371, Bienville, LA
Built 1977 Load: 23.7 t ADT: 66
FLOURNOY LUCAS RD
FairOver: BOGGY BAYOU
1.2 MI E INT.526 ON PH RD, Caddo, LA
Built 1981 Load: 23.7 t ADT: 475
LA0012
FairOver: BUXTON CREEK
0.3 MI EAST OF LA 27, Calcasieu, LA
Built 1956 Load: 23.7 t ADT: 10,277
US0171
FairOver: LITTLE INDIAN BAYOU
4.6 MI N LA 378 ON US171, Calcasieu, LA
Built 1996 Load: 23.7 t ADT: 32,659
LA1138-3
FairOver: KAYOUCHE COULEE
.51 MI EAST OF LA 14, Calcasieu, LA
Built 1959 Load: 23.7 t ADT: 6,658
LA1138-3
FairOver: KAYOUCHE COULEE
.51 MI EAST OF LA 14, Calcasieu, LA
Built 1959 Load: 23.7 t ADT: 10,981
LA0513
FairOver: SAN PATRICIO BAYOU
.4 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 23.7 t ADT: 243
I0010
FairOver: COLLEGE DRIVE
I0010, East Baton Rouge, LA
Built 1967 Load: 23.7 t ADT: 32,092
I0110
FairOver: CANAL
400 FT S of LA 408, East Baton Rouge, LA
Built 1976 Load: 23.7 t ADT: 32,092
LA0409
FairOver: SANDY CREEK RELIEF
7.01 MI N JCT LA 64, East Baton Rouge, LA
Built 1981 Load: 23.7 t ADT: 3,092
LA0957
FairOver: NO NAME CREEK
0.9 M N of LA 412&LA 957, East Feliciana, LA
Built 1981 Load: 23.7 t ADT: 1,193
LA0095
FairOver: Doza Bayou
2.5 MI N.WEST Of LA 758, Evangeline, LA
Built 1973 Load: 23.7 t ADT: 1,756
Big Creek Rd
FairOver: LOONEY CANAL (PINE BAYOU
LOG MI 0.15 FR 325 TO 327, Franklin, LA
Built 2004 Load: 23.7 t ADT: 250
KOLL ROAD
FairOver: CREEK
2.1 MI W of LA 26, Jefferson Davis, LA
Built 1980 Load: 23.7 t ADT: 60
BLANCHARD ROAD
FairOver: GUM GULLEY
0.9 MI W OF LA 395, Jefferson Davis, LA
Built 1978 Load: 23.7 t ADT: 30
E. Lewis St.
FairOver: MINE COULEE
0.10 Mi SE of Johnston St, Lafayette, LA
Built 1968 Load: 23.7 t ADT: 2,000
US0080
FairOver: REDWINE CREEK
.2 MI WEST OF LA 149, Lincoln, LA
Built 1952 Load: 23.7 t ADT: 2,332
LA0545
FairOver: INDIAN CREEK
2.2 MI NORTH OF LA 146, Lincoln, LA
Built 1973 Load: 23.7 t ADT: 404
LA0545
FairOver: SUGAR CREEK
2.4 MI NORTH OF LA 146, Lincoln, LA
Built 1973 Load: 23.7 t ADT: 404
US0165
FairOver: CREEK
5.6 MI NORTH OF NORTH INT, Morehouse, LA
Built 1936 Load: 23.7 t ADT: 1,405
FDR 342
FairOver: KISATCHIE BAYOU TRIB.
NATCHITOCHES PARISH, Natchitoches, LA
Built 1964 Load: 23.7 t ADT: 30
LA0006
FairOver: YOUNGS BAYOU
0.11 MI. WEST OF LA 1, Natchitoches, LA
Built 1974 Load: 23.7 t ADT: 15,184
LA0006
FairOver: YOUNGS BAYOU
0.11 MI. WEST OF LA 1, Natchitoches, LA
Built 1974 Load: 23.7 t ADT: 14,431
MAYO ROAD
FairOver: MORRISON CANAL
0.0 MI. S.OF.MORRISO, Orleans, LA
Built 1960 Load: 23.7 t
DESIARD ST
FairOver: DRAINAGE CANAL
DESIARD ST. MONROE L, Ouachita, LA
Built 1961 Load: 23.7 t ADT: 10,000
LA0417
FairOver: CLAY BAYOU
1.16 M W of LA 418, Pointe Coupee, LA
Built 1948 Load: 23.7 t ADT: 503
Windermere Dr
FairOver: MCADAMS DITCH
0.4 MI. SOUTH OF LA 28, Rapides, LA
Built 1982 Load: 23.7 t ADT: 2,600
Showing 2,601-2,650 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 |