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
US0090
GoodOver: BNSF R.R., Bayou Blanc
2.1 MI EAST OF LA 1111, Acadia, LA
Built 2000 Load: 42.6 t ADT: 7,162
LA0091
GoodOver: BAYOU MALLET
1.2 MI N. West OF LA 3067, Acadia, LA
Built 1998 Load: 42.6 t ADT: 1,617
LA0044
GoodOver: BAYOU FRANCOIS
LA0044, Ascension, LA
Built 1976 Load: 42.6 t ADT: 15,883
I0220
GoodOver: VIKING-DRIVE
2.31 MI EAST OF LA 3049, Bossier, LA
Built 1978 Load: 42.6 t ADT: 13,700
STANLEY RD
GoodOver: CREEK
0.1 MI W OF POWELL LANE, Calcasieu, LA
Built 2011 Load: 42.6 t ADT: 6
UNNAMED
GoodOver: ROADSIDE CANAL
CANAL ALONG LA HWY. 27, Cameron, LA
Built 2012 Load: 42.6 t ADT: 65
VASTAR ROAD
GoodOver: ROADSIDE CANAL
HWY 27 & CENTRAL CANAL, Cameron, LA
Built 2012 Load: 42.6 t ADT: 10
LA0008
GoodOver: BIRDS CREEK
3.5 MI EAST OF THE EAST I, Catahoula, LA
Built 1996 Load: 42.6 t ADT: 1,527
LA0008
GoodOver: STOKES CREEK
6.5 MI EAST OF THE EAST I, Catahoula, LA
Built 1996 Load: 42.6 t ADT: 1,527
LA0008
GoodOver: FLATS CREEK
3.8 MI EAST OF US 84, Catahoula, LA
Built 1977 Load: 42.6 t ADT: 1,606
LA0900
GoodOver: CARROLL LAKE
1.5 MI NORTH OF LA 568, Concordia, LA
Built 1985 Load: 42.6 t ADT: 337
LA0565
GoodOver: WHITES BAYOU
4.23 MI EAST OF LA 129, Concordia, LA
Built 1973 Load: 42.6 t ADT: 801
LA0565
GoodOver: BAYOU COCODRIE
6.09 MI EAST OF LA 129, Concordia, LA
Built 1973 Load: 42.6 t ADT: 801
LA 3064
GoodOver: DAWSON CREEK
0.4 M SOUTH OF LA427, East Baton Rouge, LA
Built 2013 Load: 42.6 t ADT: 33,927
Church St.
GoodOver: CYPRESS BAYOU
1.2 M W of LA 19, East Baton Rouge, LA
Built 1976 Load: 42.6 t ADT: 17,411
LA0013
GoodOver: BAYOU
2.59M NORTH OF LA 10, Evangeline, LA
Built 1994 Load: 42.6 t ADT: 6,976
I0010
GoodOver: LOUISIANA AVENUE
1.38 MI E of I-49, Lafayette, LA
Built 2003 Load: 42.6 t ADT: 56,748
I0010
GoodOver: LOUISIANA AVENUE
4.83 Mi. West of LA 328, Lafayette, LA
Built 2003 Load: 42.6 t ADT: 2,969
LA0308
GoodOver: THERIOT CANAL
2.6 M N OF LA 3198, Lafourche, LA
Built 1991 Load: 42.6 t ADT: 5,050
US0090
GoodOver: DRAINAGE CANAL
2.7 MI EAST OF LA 1, Lafourche, LA
Built 1976 Load: 42.6 t ADT: 27,665
LA0008
GoodOver: MACK BRANCH CREEK
3.6 MI SOUTH OF LA 774, LaSalle, LA
Built 1972 Load: 42.6 t ADT: 1,590
LA3159
GoodOver: JUMPING GULLY CREEK
1.35 MI NORTH OF US 84, LaSalle, LA
Built 1995 Load: 42.6 t ADT: 220
LA3159
GoodOver: JUMPING GULLY CREEK
2.9 MI NORTH OF US 84, LaSalle, LA
Built 1995 Load: 42.6 t ADT: 220
LA0447
GoodOver: DUMPLIN CREEK
00.14 MI NORTH OF US 190, Livingston, LA
Built 2000 Load: 42.6 t ADT: 34,245
LA0139
GoodOver: SANDY LICK BAYOU
2.63 MI N OUACHITA PAR LN, Morehouse, LA
Built 2002 Load: 42.6 t ADT: 5,412
I0610
GoodOver: CANAL BLVD
.8 MI EAST OF I-10, Orleans, LA
Built 1973 Load: 42.6 t ADT: 101,204
I0010
GoodOver: ON RAMP I-10E
.03 MI EAST OF LA 39, Orleans, LA
Built 1968 Load: 42.6 t ADT: 7,620
I0010
GoodOver: OFF RAMP I-10W.
1.7 MI EAST OF LA 39, Orleans, LA
Built 1968 Load: 42.6 t ADT: 7,620
US0071
GoodOver: BAYOU LAMOURIE
2.96 MI. NORTH OF LA 112, Rapides, LA
Built 1977 Load: 42.6 t ADT: 5,157
US0071
GoodOver: BAYOU LAMOURIE
2.96 MI. NORTH OF LA 112, Rapides, LA
Built 1977 Load: 42.6 t ADT: 4,141
LA0107
GoodOver: SWAFFORD CREEK
2.28 MI. EAST OF LA 454, Rapides, LA
Built 1998 Load: 42.6 t ADT: 3,354
I0049
GoodOver: BAYOU BOEUF
1.48 MI. SOUTH OF LA 3265, Rapides, LA
Built 1991 Load: 42.6 t ADT: 20,572
I0049
GoodOver: GROUND
1.03 MI. SOUTH OF US 71, Rapides, LA
Built 1995 Load: 42.6 t ADT: 15,642
I0049
GoodOver: UP RR
1.05 MI. NORTH OF LA 498, Rapides, LA
Built 1991 Load: 42.6 t ADT: 25,033
I0049
GoodOver: UP RR
1.05 MI. NORTH OF LA 498, Rapides, LA
Built 1991 Load: 42.6 t ADT: 20,561
US0171
GoodOver: LEWIS CREEK
1.67 MI. NORTH OF LA 175, Sabine, LA
Built 1990 Load: 42.6 t ADT: 3,273
LA0041
GoodOver: TALISHEEK CREEK
0.4 M NW OF LA 435, St. Tammany, LA
Built 1972 Load: 42.6 t ADT: 3,043
LA1082
GoodOver: LITTLE BOGUE FALAYA RIV
0.2 M N OF LA 21, St. Tammany, LA
Built 1972 Load: 42.6 t ADT: 2,916
LA0022
GoodOver: DRAIN
3.0 M W OF I-55, Tangipahoa, LA
Built 1976 Load: 42.6 t ADT: 18,757
I0055
GoodOver: OFF RAMP US 51 MANCHAC
9.9 M S OF LA 22, Tangipahoa, LA
Built 1979 Load: 42.6 t ADT: 8,115
I0012
GoodOver: PONCHATOULA CREEK
I0010, Tangipahoa, LA
Built 1975 Load: 42.6 t ADT: 21,736
LA1040
GoodOver: NATALBANY RIVER
TANGI-LIV. PARISH LINE, Tangipahoa, LA
Built 1986 Load: 42.6 t ADT: 7,190
LA0143
GoodOver: HAILE CREEK
0.22 MI N of HAILE LOOP, Union, LA
Built 2001 Load: 42.6 t ADT: 2,254
LA0335
GoodOver: BILL CANAL
2.6 Mi West of LA 694, Vermilion, LA
Built 2001 Load: 42.6 t ADT: 507
LA0467
GoodOver: BAYOU CASTOR S BRANCH
1.24 MI. SOUTH OF US 171, Vernon, LA
Built 1989 Load: 42.6 t ADT: 6,076
LA0010
GoodOver: LITTLE SIX MILE CREEK
5.18 MI. WEST OF LA 463, Vernon, LA
Built 1990 Load: 42.6 t ADT: 1,367
LA0111
GoodOver: SANDY CREEK
.77 MI EAST OF JCT LA 392, Vernon, LA
Built 1999 Load: 42.6 t ADT: 801
LA0021
GoodOver: PUSHAPATAPA CR
LA0021, Washington, LA
Built 1965 Load: 42.6 t ADT: 5,485
LA0134
GoodOver: BAYOU
7.15 MI E RICHLAND PAR LN, West Carroll, LA
Built 1991 Load: 42.6 t ADT: 759
US0084
GoodOver: PORT DELUCE CREEK
1.05 MI EAST JCT US 167, Winn, LA
Built 1996 Load: 42.6 t ADT: 4,317
Showing 10,301-10,350 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 |