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
FALGOUT CANAL RD
FairOver: HOUMA NAVIGATION CANAL
1.0 MI W OF LA 57, Terrebonne, LA
Built 1958 Load: 16.3 t ADT: 363
LA0082
FairOver: VERMILION R PERRY
1.0 MI S. OF LA 330, Vermilion, LA
Built 1955 Load: 16.3 t ADT: 2,899
LA0335
FairOver: ROBINS CANAL
0.07 MI W. OF LA 3093, Vermilion, LA
Built 1967 Load: 16.3 t ADT: 284
Minos Rd
FairOver: COULEE
0.4 Mi E of La 35, Vermilion, LA
Built 1996 Load: 16.3 t ADT: 86
LA0450
FairOver: TCHEFUNCTA RIVER
1.7 M S OF LA 10, Washington, LA
Built 1943 Load: 16.3 t ADT: 1,162
LA0436
FairOver: MUSTER GROUND C
0.9 M W OF LA 21, Washington, LA
Built 1958 Load: 16.3 t ADT: 1,306
Polk Brannon Road
FairOver: UNNAMED CREEK
4 MI.N.W.LA 10,LA 421 JCT, West Feliciana, LA
Built 1984 Load: 16.3 t ADT: 40
LA0452
FairOver: JOHNSON BAYOU
1.96 MI. NORTH OF LA 1190, Avoyelles, LA
Built 1953 Load: 16.5 t ADT: 8,736
ELYSIAN FIELD RD
FairOver: TRIB TO CROSS BAYOU
2 MI. SO. WEST OF U., Caddo, LA
Built 1980 Load: 16.5 t ADT: 58
W. 79th ST
FairOver: 81ST STREET DITCH
1.3 MI N OF HWY 3212, Caddo, LA
Built 1980 Load: 16.5 t ADT: 100
LA0534
FairOver: BRANCH
1.6 MI NORTH OF LA 534-S, Claiborne, LA
Built 1971 Load: 16.5 t ADT: 118
LA0177
FairOver: CHEMARD LAKE
2.07 MI NORTH OF LA 346, De Soto, LA
Built 1959 Load: 16.5 t ADT: 2,878
LA0191
FairOver: COW BAYOU
2.14 MI NORTH OF LA 481, De Soto, LA
Built 1960 Load: 16.5 t ADT: 769
LA0191
FairOver: BULL BAYOU
3.70 MI NORTH OF LA 481, De Soto, LA
Built 1960 Load: 16.5 t ADT: 769
LA0344
FairOver: TECHE BAYOU/LOREAUVILLE
0.1 MI WEST OF LA 86, Iberia, LA
Built 1964 Load: 16.5 t ADT: 2,059
PATTERSON RD
FairOver: BAYOU
1.3 MI N of ATTERBERRY RD, Jefferson Davis, LA
Built 1980 Load: 16.5 t ADT: 350
Bourque Rd
FairOver: ILE DES CANNES COULEE
0.4 Mi W of US 167, Lafayette, LA
Built 1974 Load: 16.5 t ADT: 800
W. Willow St.
FairOver: COULEE
0.64 Mi W of LA 3184, Lafayette, LA
Built 1977 Load: 16.5 t ADT: 1,960
LA3185
FairOver: DRAIN CANAL
2.3 MI WEST OF LA 3107, Lafourche, LA
Built 1969 Load: 16.5 t ADT: 12,957
LA0039
FairOver: INDUSTRIAL CANAL
4.1 MI W OF LA 47, Orleans, LA
Built 1957 Load: 16.5 t ADT: 36,993
Beauregard Rd
FairOver: CURRENT BAYOU
1.0 M. NW OF S. JCT. LA 1, Rapides, LA
Built 1991 Load: 16.5 t ADT: 60
Grand Bois Rd
FairOver: COULEE
1.8 Mi. E. of La 3039, St. Martin, LA
Built 1967 Load: 16.5 t ADT: 140
SAVANNE RD
FairOver: COULEE
0544 LOG MI FROM IN, Terrebonne, LA
Built 1972 Load: 16.5 t ADT: 7,455
BULL RUN RD
FairOver: TERR LAF DRAINAGE CANAL
6.7 MI W OF LA 311, Terrebonne, LA
Built 1968 Load: 16.5 t ADT: 826
WEST BOUNDARY RD
FairOver: HURRICANE BRANCH
0.5 M. N. OF BAILEY RD., Vernon, LA
Built 1970 Load: 16.5 t ADT: 130
TOWER RD
FairOver: MAPLE BRANCH
0.60 M. N. OF LA 10, Vernon, LA
Built 1970 Load: 16.5 t ADT: 350
LOOKOUT ROAD
FairOver: WHISKEY CHITTO CREEK
VE 923 307, Vernon, LA
Built 1978 Load: 16.5 t ADT: 336
Coochie Brake
FairOver: COOCHIE BREAK CREEK
2.7 MI. NORTH OF LA 34, Winn, LA
Built 1965 Load: 16.5 t ADT: 15
North Ave. D
FairOver: COULEE
1.2 Mi. N. of US 90, Acadia, LA
Built 1974 Load: 16.8 t ADT: 960
Lake Bistineau Rd
FairOver: TRIBUTARY TO MADDEN CREE
1.5 MI. NO. OF LA 15, Bienville, LA
Built 1963 Load: 16.8 t ADT: 450
Lake Bistineau Rd
FairOver: TOULON BAYOU
7.5 MI. NO. OF LA 15, Bienville, LA
Built 1963 Load: 16.8 t ADT: 400
Brownlee Rd
FairOver: BENOIT BAYOU
0.2 MI E. OF HWY. 3, Bossier, LA
Built 1986 Load: 16.8 t ADT: 2,204
LA0001
FairOver: PRAIRIE RIVER
2.6 MI SOUTH OF LA 175, Caddo, LA
Built 1956 Load: 16.8 t ADT: 1,869
LA3049
FairOver: DOOLEY BAYOU
3.3 MI NORTH OF LA 530, Caddo, LA
Built 1978 Load: 16.8 t ADT: 399
LA0169
FairOver: CREEK
6.5 MI NORTH OF LA 172, Caddo, LA
Built 1983 Load: 16.8 t ADT: 1,540
FAIR ST
FairOver: HUDSON STREET
0.6 MI W OF LA171, Caddo, LA
Built 1965 Load: 16.8 t ADT: 200
LA0127
FairOver: CASTOR RELIEF
3.4 MI N OF LA 125, Caldwell, LA
Built 1972 Load: 16.8 t ADT: 314
Country Estate Ave
FairOver: DRAIN BAYOU
0.4 MI W. Of Joor Rd, East Baton Rouge, LA
Built 1980 Load: 16.8 t ADT: 179
FDR 613
FairOver: PINEYWOOD BRANCH
LOGMI 4.03 FR 529 TO, Grant, LA
Built 1965 Load: 16.8 t ADT: 66
MARIAH RD
FairOver: COW CREEK
1.4 MI NE of LA 4, Jackson, LA
Built 1983 Load: 16.8 t ADT: 22
ATTERBERY RD
FairOver: DRAIN
1.1 MI W of LA 99, Jefferson Davis, LA
Built 1975 Load: 16.8 t ADT: 50
La Neuville Rd.
FairOver: COULEE
0.45 Mi East of LA 339, Lafayette, LA
Built 1976 Load: 16.8 t ADT: 780
Lajaunie Rd
FairOver: COULEE
.75 MI SW of LA 98, Lafayette, LA
Built 1978 Load: 16.8 t ADT: 1,160
TABONY LN
FairOver: DRAINAGE CANAL
0.0 S OF SR 39, Plaquemines, LA
Built 1960 Load: 16.8 t
SUBURBAN RD
FairOver: DRAINAGE CANAL
0.01 MI. W. OF HWY., Plaquemines, LA
Built 1965 Load: 16.8 t ADT: 170
FDR 231
FairOver: SQUIRES BRANCH
NO DATA ENTERED, Rapides, LA
Built 1970 Load: 16.8 t ADT: 30
Louis Teal Lane
FairOver: HATHAWAY BRANCH
0.1 MILE EAST LA 112, Rapides, LA
Built 2003 Load: 16.8 t ADT: 30
US0171
FairOver: BAYOU SAN MIGUEL
2.68 MI. SOUTH OF LA 1218, Sabine, LA
Built 1963 Load: 16.8 t ADT: 4,790
Charles Fisher Rd
FairOver: Drainage Bayou
0.4 M NW of LA 357, St. Landry, LA
Built 2018 Load: 16.8 t ADT: 245
LA0035
FairOver: DRAINAGE CANAL
0.5 Mi. S. of LA 358, St. Landry, LA
Built 1968 Load: 16.8 t ADT: 1,352
Showing 1,351-1,400 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 |