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
FH 59
FairOver: CLEAR BRANCH
NO DATA ENTERED, Natchitoches, LA
Built 1965 Load: 19.4 t ADT: 80
LA3021
FairOver: SOUTHERN RR
.3 MI SOUTH OF I-610, Orleans, LA
Built 1961 Load: 19.4 t ADT: 47,747
LA3021
FairOver: SOUTHERN R R
.3 MI SOUTH OF I-610, Orleans, LA
Built 1961 Load: 19.4 t ADT: 28,615
SUMMERS RD
FairOver: COW BAYOU
0.63 MI FROM 208 TO 214, Richland, LA
Built 1989 Load: 19.4 t ADT: 40
LA0013
FairOver: DRAINAGE CANAL
0.34 MI NORTH OF US 190, St. Landry, LA
Built 1966 Load: 19.4 t ADT: 8,906
Cypremort Rd.
FairOver: KELLY CANAL
1.5 Mi SE of LA 318, St. Mary, LA
Built 1958 Load: 19.4 t ADT: 210
LA0573
FairOver: BIG CHOCTAW BAYOU
5.0 MI NORTH OF LA 3044, Tensas, LA
Built 1971 Load: 19.4 t ADT: 16
Blanchard Rd
FairOver: BAYOU BLACK
0.01 MI N OF LA 182, Terrebonne, LA
Built 1976 Load: 19.4 t ADT: 745
Greenwood Bridge
FairOver: BAYOU BLACK
0.01 MI N OF LA 182, Terrebonne, LA
Built 1972 Load: 19.4 t ADT: 557
Raoul Rd
FairOver: COULEE
1.09 Mi W of LA 35, Vermilion, LA
Built 1960 Load: 19.4 t ADT: 30
LA0935
FairOver: Black Bayou
1.7 Mi. N. of LA 22, Ascension, LA
Built 1960 Load: 19.8 t ADT: 1,790
LA0027
FairOver: BECKWITH CREEK
5.7 MI. N OF LA 110, Beauregard, LA
Built 1955 Load: 19.8 t ADT: 3,333
Ellerbe Rd
FairOver: PASCAGOULA CANAL
3.2 MI N W OF CASPIANA, Caddo, LA
Built 2001 Load: 19.8 t ADT: 76
Vivian Airport Rd
FairOver: VIV-APT RD,TRBY JAMES B.
1.3 MI. EAST OF VIVIAN, Caddo, LA
Built 1983 Load: 19.8 t ADT: 59
FRUGE RD
FairOver: GRAGG DITCH
2.02 MI N OF INT. 1153, Calcasieu, LA
Built 2002 Load: 19.8 t ADT: 233
TANK FARM RD
FairOver: CANAL
0.04 MI E OF ELLIOTT RD, Calcasieu, LA
Built 1999 Load: 19.8 t ADT: 683
S. THONPSON RD
FairOver: LATERAL 4
1.1 MI SOUTH OF US 90, Calcasieu, LA
Built 2002 Load: 19.8 t ADT: 692
VINCENT ST
FairOver: CANAL
0.1 MI. E. of LA 3063, Calcasieu, LA
Built 1968 Load: 19.8 t ADT: 100
S. THONPSON RD
FairOver: LATERAL 4B
1.8 MI SOUTH OF US 90, Calcasieu, LA
Built 2002 Load: 19.8 t ADT: 692
KING ST
FairOver: DRAIN
0.08 MI N BUS 90, Calcasieu, LA
Built 1997 Load: 19.8 t ADT: 934
CLINE ST
FairOver: GUM SLOUGH
0.2 MI E of LA 14, Calcasieu, LA
Built 2002 Load: 19.8 t ADT: 433
EAST OPELOUSAS ST
FairOver: COMPANY CANAL
0.7 MI EAST OF LA 397, Calcasieu, LA
Built 1989 Load: 19.8 t ADT: 1,003
TOPSY RD
FairOver: LITTLE INDIAN BAYOU
0.1 MI EAST OF US 171, Calcasieu, LA
Built 1986 Load: 19.8 t ADT: 5,516
LA3045
FairOver: CAPITOL LAKE
1.3 M N of I-10&I-110, East Baton Rouge, LA
Built 1958 Load: 19.8 t ADT: 2,701
Parkforest Dr
FairOver: JACKS BAYOU
0.7 M N of LA 73, East Baton Rouge, LA
Built 1969 Load: 19.8 t ADT: 2,723
Parker Lane
FairOver: ASH SLOUGH
0.34 mi. W of LA 15, Franklin, LA
Built 1997 Load: 19.8 t ADT: 210
FDR 155
FairOver: SADDLE CREEK
NO DATA ENTERED, Grant, LA
Built 1962 Load: 19.8 t ADT: 15
LA0395
FairOver: DRAIN
6.0 MI NORTH OF I-10, Jefferson Davis, LA
Built 1957 Load: 19.8 t ADT: 3,596
BEBEE ROAD
FairOver: ARCENEAUX BAYOU
1.6 MI N of LA101, Jefferson Davis, LA
Built 1971 Load: 19.8 t ADT: 80
E. 28TH ST
FairOver: BAYOU LAFOURCHE
0.01M EAST OF LA 1, Lafourche, LA
Built 1993 Load: 19.8 t ADT: 5,637
LA0016
FairOver: DRAIN
1.0 M E OF LA 42, Livingston, LA
Built 1951 Load: 19.8 t ADT: 6,743
Hood Rd
FairOver: WEST COLYELL CREEK
0.90 M E of LA 447, Livingston, LA
Built 1984 Load: 19.8 t ADT: 300
LA0483
FairOver: CREEK
5.03 MI. NORTH OF US 171, Sabine, LA
Built 1929 Load: 19.8 t ADT: 525
School Rd.
FairOver: BAYOU MALLET
0.4 MI N of LA 752, St. Landry, LA
Built 1987 Load: 19.8 t ADT: 625
LA0341
FairOver: COULEE DATIDER
0.93 MI NORTH OF LA 31, St. Martin, LA
Built 1964 Load: 19.8 t ADT: 2,152
Poche Bridge Rd
FairOver: TECHE BAYOU
0.08 Mi S of LA 31, St. Martin, LA
Built 1974 Load: 19.8 t ADT: 4,252
LA0670
FairOver: BAYOU TECHE
0.017 M E OF LA 182, St. Mary, LA
Built 1990 Load: 19.8 t ADT: 661
3RD STREET
FairOver: CANAL
1.25 MI EAST OF US 190, St. Tammany, LA
Built 1989 Load: 19.8 t ADT: 600
FISCHER DRIVE
FairOver: GUM BAYOU
0.06 MI EAST OF LA 1090, St. Tammany, LA
Built 1976 Load: 19.8 t ADT: 1,000
LA1077
FairOver: SAVANNAH BRANCH
LA1077, St. Tammany, LA
Built 1957 Load: 19.8 t ADT: 883
US0190
FairOver: PONCHATOULA CR.
US0190, Tangipahoa, LA
Built 1932 Load: 19.8 t ADT: 7,716
LA0661
FairOver: BAYOU SALLE
.2 MI EAST OF LA 57, Terrebonne, LA
Built 1961 Load: 19.8 t ADT: 5,780
LA0661
FairOver: BAYOU LACARPE
.48 MI NORTH OF LA 315, Terrebonne, LA
Built 1965 Load: 19.8 t ADT: 10,945
LA0002-A
FairOver: HICKS BRANCH
1.3 MI EAST OF LA 159, Webster, LA
Built 2005 Load: 19.8 t ADT: 655
LA0986
FairOver: DRAINAGE CANAL
1.4 MILES EAST OF LA 415, West Baton Rouge, LA
Built 2013 Load: 19.8 t ADT: 1,204
Coldwater
FairOver: WHITE OAK CREEK
APP. 6.1 MI. NW OF US 84, Winn, LA
Built 1970 Load: 19.8 t ADT: 288
LA3070
FairOver: CREEK
5.22 MI NORTH OF LA 100, Acadia, LA
Built 1963 Load: 20.0 t ADT: 956
US0190
FairOver: SLOUGH
7.49 MI. E OF INT LA 113, Allen, LA
Built 1954 Load: 20.0 t ADT: 3,923
US0190
FairOver: SLOUGH
7.78 MI. E OF INT LA 113, Allen, LA
Built 1954 Load: 20.0 t ADT: 3,923
TURNER RD
FairOver: CREEK
2.7 MI N of LA 26, Allen, LA
Built 1970 Load: 20.0 t ADT: 356
Showing 1,851-1,900 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 |