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
LA0772
GoodOver: DRAIN
2.0 MI EAST OF US 84, LaSalle, LA
Built 1985 Load: 38.1 t ADT: 116
LA0016
GoodOver: COLYELL BAY
2.0 Mi. E. of LA 42, Livingston, LA
Built 1979 Load: 38.1 t ADT: 6,743
LA0139
GoodOver: BAYOU BOEUF
.1 MI NORTH OF LA 134, Morehouse, LA
Built 2002 Load: 38.1 t ADT: 5,412
I0049
GoodOver: EMMANUEL ROAD
1.62 MI. SOUTH OF LA 119, Natchitoches, LA
Built 1985 Load: 38.1 t ADT: 18,305
US0090
GoodOver: ON RAMP
1.77 MI SOUTH OF MISS. RI, Orleans, LA
Built 1989 Load: 38.1 t ADT: 46,928
LA0028
GoodOver: DIVERSION CANAL
2.18 MI. EAST OF LA 3054, Rapides, LA
Built 1971 Load: 38.1 t ADT: 17,593
BAREFIELD RD
GoodOver: DRY FORK CUT-OFF
1.1 MI N of LA 584, Richland, LA
Built 2005 Load: 38.1 t ADT: 400
US0071
GoodOver: TECHE VERMILION CANAL
1.9 MI NORTH OF US 190, St. Landry, LA
Built 1981 Load: 38.1 t ADT: 1,933
W. 28th ave.
GoodOver: MILE BRANCH
1.0 MILES NORTH OF NORTH, St. Tammany, LA
Built 2007 Load: 38.1 t ADT: 350
US0190
GoodOver: PONCHITOLAWA CR
US 190, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 4,708
LA0021
GoodOver: BOGUE CHITTO RV RELIEF
0.9 M N OF LA 41, St. Tammany, LA
Built 1975 Load: 38.1 t ADT: 7,481
I0012
GoodOver: BAYOU LACOMBE
0.3 M W OF LA 434, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 79,502
I0012
GoodOver: BAYOU LACOMBE
0.3 M W OF LA 434, St. Tammany, LA
Built 1976 Load: 38.1 t ADT: 29,236
I0055
GoodOver: OFF RAMP US 51 MANCHAC
9.9 M S OF LA 22, Tangipahoa, LA
Built 1979 Load: 38.1 t ADT: 8,115
I0012
GoodOver: NATALBANY RIVER
I0012, Tangipahoa, LA
Built 1970 Load: 38.1 t ADT: 21,300
US0090
GoodOver: TIGER BAYOU
3.95 MI EAST OF LA 662, Terrebonne, LA
Built 1998 Load: 38.1 t ADT: 3,007
LA0549
GoodOver: BAYOU DELOUTRE
4.05 MI E of LA 15, Union, LA
Built 1996 Load: 38.1 t ADT: 1,907
LA0008
GoodOver: WYATT-CREEK
5.4 MI EAST OF LA 464, Vernon, LA
Built 1978 Load: 38.1 t ADT: 4,071
LA0008
GoodOver: PRAIRIE-CREEK
5.9 MI EAST OF LA 464, Vernon, LA
Built 1978 Load: 38.1 t ADT: 4,071
LA4361
GoodOver: LA 436-1 OVER PUSHEPATAP
LA 436-1 LOG MI 16.63, Washington, LA
Built 1986 Load: 38.1 t ADT: 1,145
I0020
GoodOver: DORCHEAT BAYOU REL
0.44M EAST OF LA 7, Webster, LA
Built 1960 Load: 38.1 t ADT: 38,625
Bains Rd
GoodOver: UNNAMED CREEK
0.8 MI E US 61, LA 66 JCT, West Feliciana, LA
Built 1997 Load: 38.1 t ADT: 80
Lemannville Cutoff
GoodOver: VERRET BAYOU
1.47 MI SW OF LA 18, Ascension, LA
Built 2017 Load: 38.2 t ADT: 50
LA1178
GoodOver: STATE CANAL
3.85 MILES SOUTH OF LA 29, Avoyelles, LA
Built 2012 Load: 38.2 t ADT: 175
LONGVILLE RD
GoodOver: DRY CREEK
4.8 MI W OF LA 113, Beauregard, LA
Built 2005 Load: 38.2 t ADT: 230
Swan Lake Rd
GoodOver: Willow Chute Bayou
0.50 MI N OF I-220, Bossier, LA
Built 2019 Load: 38.2 t ADT: 5,335
WILLIAMS RD
GoodOver: HAMPTON COULEE
0.01 MI. E OF GUM COVE RD, Calcasieu, LA
Built 2011 Load: 38.2 t ADT: 60
US0165
GoodOver: BLACK BAYOU RELIEF
0.3 MI. NORTH OF LA 483, Caldwell, LA
Built 2004 Load: 38.2 t ADT: 13,633
US0165
GoodOver: HURRICANE CREEK
4.4 MI N of LA 506, Caldwell, LA
Built 2004 Load: 38.2 t ADT: 13,633
US0165
GoodOver: HURRICANE CREEK
0.26 M S of LA 844, Caldwell, LA
Built 2004 Load: 38.2 t ADT: 12,669
Temple Rd
GoodOver: Black Bayou
LOG MI 0.211 N of HWY 84, Concordia, LA
Built 2010 Load: 38.2 t ADT: 125
Goodwood Blvd
GoodOver: NORTH BRANCH WARD CREEK
2.3 MI E OF LA 73, East Baton Rouge, LA
Built 1967 Load: 38.2 t ADT: 20,794
Evangeline Rd
GoodOver: PRONG BAYOU
1.15 Mi S of Agate Rd, Evangeline, LA
Built 2013 Load: 38.2 t ADT: 45
US0165
GoodOver: INDIAN CREEK RELIEF
5.03 MI. NORTH OF LA 123, Grant, LA
Built 2007 Load: 38.2 t ADT: 7,084
LA0505
GoodOver: CREEK
0.9 MI EAST OF WINN PARIS, Jackson, LA
Built 2016 Load: 38.2 t ADT: 873
US0090
GoodOver: GROUND
0.5 MI SOUTHWEST OF MISSI, Jefferson, LA
Built 2013 Load: 38.2 t ADT: 6,786
US0090
GoodOver: GROUND
0.5 MI W OF MISSISSIPPI R, Jefferson, LA
Built 2013 Load: 38.2 t ADT: 55,210
Argus Rd.
GoodOver: COULEE
.1 Mi E of Grand Ave, Lafayette, LA
Built 2004 Load: 38.2 t ADT: 60
Venduer Rd.
GoodOver: COULEE
0.41 Mi SE of La 3025, Lafayette, LA
Built 1999 Load: 38.2 t ADT: 100
LA0500
GoodOver: JONES CREEK
7.45 MI WEST OF US 84, LaSalle, LA
Built 1989 Load: 38.2 t ADT: 633
LA0478
GoodOver: BAYOU GRANDE RELIEF
1.99 MILES EAST OF LA 120, Natchitoches, LA
Built 2013 Load: 38.2 t ADT: 172
LA0478
GoodOver: BAYOU GRANDE
1.91 MILES EAST OF LA 120, Natchitoches, LA
Built 2013 Load: 38.2 t ADT: 172
LA0428
GoodOver: ALGIERS CANAL
0.40 MILE SOUTH EAST OF U, Orleans, LA
Built 2012 Load: 38.2 t ADT: 626
S Broad Ave
GoodOver: WASHINGTON AVE CANAL
0.75 MI S OF I-10, Orleans, LA
Built 1955 Load: 38.2 t
TULLIS DR
GoodOver: CANAL
1.2M EAST OF BEHRMAN HWY, Orleans, LA
Built 1989 Load: 38.2 t ADT: 500
FLORIDA AVE
GoodOver: INNER HARBOR NAVIGATION
0.4 MI E OF FRANCE RD, Orleans, LA
Built 2004 Load: 38.2 t
BUCKLEY HILL RD
GoodOver: PATRICK BAYOU
2.0 MILES EAST OF LA 139, Ouachita, LA
Built 2015 Load: 38.2 t ADT: 97
LA0028
GoodOver: HEMPHILL CREEK
4.0 MI. WEST OF LA 121, Rapides, LA
Built 2011 Load: 38.2 t ADT: 8,811
LA0028
GoodOver: CYPRESS BAYOU
4.21 MI. EAST OF LA 465, Rapides, LA
Built 2013 Load: 38.2 t ADT: 8,811
LA0112
GoodOver: SPRING CREEK
5.09 MILES EAST OF JCT LA, Rapides, LA
Built 2007 Load: 38.2 t ADT: 1,268
Showing 9,501-9,550 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 |