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
I0049
GoodOver: ST VINCENT & KCS R/R
RAMP SE AT LA 3132 INTG, Caddo, LA
Built 1991 Load: 35.4 t ADT: 87,567
LA0509
GoodOver: BAYOU PIERRE
6.6 MI EAST OF I-49, De Soto, LA
Built 1981 Load: 35.4 t ADT: 1,975
LA0004
GoodOver: TURKEY CREEK
.7 MI EAST OF LA 15, Franklin, LA
Built 1977 Load: 35.4 t ADT: 6,635
LA0004
GoodOver: RELIEF CANAL BRIDGE
.9 MI EAST OF LA 15, Franklin, LA
Built 1976 Load: 35.4 t ADT: 6,635
LA0001
GoodOver: B.PLAQUEMINE
0.37 M SE of LA 1&LA 77, Iberville, LA
Built 1979 Load: 35.4 t ADT: 10,350
LA3139
GoodOver: I.C.G. RR
.18 MI SOUTH OF US 61, Jefferson, LA
Built 1977 Load: 35.4 t ADT: 34,781
LA0101
GoodOver: DRAINAGE CANAL
3.6 MI N of LA 14, Jefferson Davis, LA
Built 1983 Load: 35.4 t ADT: 3,166
LA0024
GoodOver: PIPELINE CROSSING
2.1 MI WEST OF LA 1, Lafourche, LA
Built 1979 Load: 35.4 t ADT: 5,271
LA0860
GoodOver: BAYOU MACON
1.8 MI SOUTH OF LA 577 SP, Madison, LA
Built 1971 Load: 35.4 t ADT: 199
LA0490
GoodOver: CANE RIVER
1.0 MI. SW OF LA 1, Natchitoches, LA
Built 1977 Load: 35.4 t ADT: 142
US0090-B
GoodOver: DRIVEWAY
0.06 MI. N. OF LA 428, Orleans, LA
Built 1995 Load: 35.4 t ADT: 7,620
US0090
GoodOver: RAMP DG-5
1.97 MI SOUTH OF MISS. RI, Orleans, LA
Built 1989 Load: 35.4 t ADT: 7,620
I0510
GoodOver: GROUND
1.20M NORTH OF US 90, Orleans, LA
Built 1992 Load: 35.4 t ADT: 7,620
I0010
GoodOver: ON RAMP I-10E.
2.8 MI EAST OF LA 39, Orleans, LA
Built 1966 Load: 35.4 t ADT: 7,620
I0020
GoodOver: BOEUF RIVER
3.0 MI EAST OF LA 133, Richland, LA
Built 2008 Load: 35.4 t ADT: 16,997
I0010
GoodOver: LAKE PONTCHARTRAIN X-OVE
3.3 MI EAST OF I-55, St. Charles, LA
Built 1992 Load: 35.4 t ADT: 29,468
I0310
GoodOver: PIPELINE
0.2M NORTH OF LA 48, St. Charles, LA
Built 1991 Load: 35.4 t ADT: 47,396
I0310
GoodOver: PIPELINE
0.2M NORTH OF LA 48, St. Charles, LA
Built 1992 Load: 35.4 t ADT: 29,468
I0310
GoodOver: 80 ARPENT CANAL
1.17 MI N. OF US 90, St. Charles, LA
Built 1986 Load: 35.4 t ADT: 29,468
I0055
GoodOver: I-55 OFF RAMP @ US 51
0.1 M N OF US 51, St. John the Baptist, LA
Built 1975 Load: 35.4 t ADT: 15,642
LA0096
GoodOver: RUTH BAYOU
2.3 MI WEST OF LA 31, St. Martin, LA
Built 1978 Load: 35.4 t ADT: 6,714
US0090
GoodOver: RAMP 'K'
0.9 MI E of LA 182, St. Mary, LA
Built 1984 Load: 35.4 t ADT: 12,192
US0090
GoodOver: RAMP 'L'
0.9 MI E of LA 182, St. Mary, LA
Built 1984 Load: 35.4 t ADT: 12,192
LA0021
GoodOver: BOGUE CHITTO RIVER
LA0021, St. Tammany, LA
Built 1974 Load: 35.4 t ADT: 8,257
LA0021
GoodOver: BOGUE CHITTO RIVER
LA0021, St. Tammany, LA
Built 1974 Load: 35.4 t ADT: 7,481
LA0040
GoodOver: DRAIN
0.6 M E OF LA 25, St. Tammany, LA
Built 1979 Load: 35.4 t ADT: 3,689
I0055
GoodOver: PASS MANCHAC
0.2 M W OF US 51, Tangipahoa, LA
Built 1977 Load: 35.4 t ADT: 39,850
I0055
GoodOver: PASS MANCHAC
11.0 M S OF LA 22, Tangipahoa, LA
Built 1977 Load: 35.4 t ADT: 14,300
I0055
GoodOver: ON RAMP NORTH US 51
9.9 M S OF LA 22, Tangipahoa, LA
Built 1979 Load: 35.4 t ADT: 8,115
US0090
GoodOver: SWAMP
.1 MI. FROM LA. 20, Terrebonne, LA
Built 1995 Load: 35.4 t ADT: 2,629
LA0028
GoodOver: FARMER CREEK
0.9 MI. E. JCT 469, Vernon, LA
Built 2005 Load: 35.4 t ADT: 6,456
LA0028
GoodOver: FARMER CREEK
0.9 MI E JCT 469 & LA 28E, Vernon, LA
Built 2003 Load: 35.4 t ADT: 6,952
LA0028
GoodOver: EAST FORK CREEK
3.5 MI. WEST OF JCT LA121, Vernon, LA
Built 2005 Load: 35.4 t ADT: 6,952
LA0028
GoodOver: EAST FORK CREEK
3.5 MI WEST OF JCT LA 121, Vernon, LA
Built 2003 Load: 35.4 t ADT: 6,456
LA0021
GoodOver: LEE CREEK
4 MI N,JCT LA1075 & LA21, Washington, LA
Built 1987 Load: 35.4 t ADT: 7,160
LA0439
GoodOver: BOGUE LUSA CREEK
LA0439, Washington, LA
Built 1980 Load: 35.4 t ADT: 1,235
LA0157
GoodOver: BODCAU BAYOU
3.23 MI WEST OF US371, Webster, LA
Built 1994 Load: 35.4 t ADT: 1,382
Harris Cornor Rd
GoodOver: CREEK
3.2 MILES FROM US 61, West Feliciana, LA
Built 2011 Load: 35.4 t ADT: 51
LA0010
GoodOver: PEARL RIVER
1.4MI EAST OF LA 10/LA 21, Washington, LA
Built 1998 Load: 35.5 t ADT: 3,700
Broussard Rd
GoodOver: WELSH GULLY
2.8 MI.E/NE I10,LA427 JCT, Ascension, LA
Built 2002 Load: 35.6 t ADT: 50
Mott Rd
GoodOver: Boggs Creek
4.1 MI NORTH OF LA 2, Bossier, LA
Built 1994 Load: 35.6 t ADT: 240
Buncombe Rd
GoodOver: TRIB TO BOGGY BAYOU
0.2 MI. E. OF LA 169, Caddo, LA
Built 2016 Load: 35.6 t ADT: 80
LA0525
GoodOver: CREEK
0.61 MI. E OF US 171, Caddo, LA
Built 2003 Load: 35.6 t ADT: 4,294
SOUTH LAKESHORE DR
GoodOver: TRIB. TO CROSS LAKE
7.9 MI EAST OF LA 169, Caddo, LA
Built 1994 Load: 35.6 t ADT: 1,100
I0110
GoodOver: EVANGELINE ST. OFF RAMP
I0110, East Baton Rouge, LA
Built 1971 Load: 35.6 t ADT: 964
Antioch Rd
GoodOver: CLAY CUT BAYOU
3.1 MI NE JCT I-10, LA 42, East Baton Rouge, LA
Built 2003 Load: 35.6 t ADT: 5,730
Tom Dr
GoodOver: JONES CREEK
0.6 MI SE OF US 61, East Baton Rouge, LA
Built 2000 Load: 35.6 t
Spring St
GoodOver: DRAINAGE CREEK
0.3 M North of LA 10, East Feliciana, LA
Built 2008 Load: 35.6 t ADT: 44
Perkins Rd
GoodOver: PERKINS RD, POND
3.2 MI N. OF FELIXVILLE, East Feliciana, LA
Built 2003 Load: 35.6 t ADT: 24
Gazette Rd
GoodOver: Bayou Queue De Tortue
0.2 Miles West of LA 724, Lafayette, LA
Built 2018 Load: 35.6 t ADT: 586
Showing 9,101-9,150 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 |