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
Forestry Rd
GoodOver: BAYOU BOEUF
3.42 MILES SE OF LA 3265, Rapides, LA
Built 2009 Load: 34.3 t ADT: 250
BOSCO LANE
GoodOver: CREEK
2.0 MILES WEST OF LA 133, Richland, LA
Built 2011 Load: 34.3 t ADT: 150
MENGEL RD
GoodOver: COW BAYOU
0.6 MI S of US 80, Richland, LA
Built 2003 Load: 34.3 t ADT: 400
US0171
GoodOver: BAYOU TORO
4.97 MI. NORTH OF LA 392, Sabine, LA
Built 1944 Load: 34.3 t ADT: 3,483
CENCHREA RD
GoodOver: MILL CREEK
CENCHREA ROAD, Sabine, LA
Built 1990 Load: 34.3 t ADT: 230
I10 SW Frontage Rd
GoodOver: CANAL
1 MI. SOUTH OF US 190, St. Tammany, LA
Built 2012 Load: 34.3 t ADT: 200
LA1058
GoodOver: HYDE BRANCH
3.01 MI SOUTH OF LA 10, Tangipahoa, LA
Built 2004 Load: 34.3 t ADT: 899
LA3044
GoodOver: CREEK
0.5 Miles south of LA 573, Tensas, LA
Built 2000 Load: 34.3 t ADT: 42
Laverne crain Rd
GoodOver: JOE'S BRANCH
0.40 MI S JCT LA 438 & 62, Washington, LA
Built 2001 Load: 34.3 t ADT: 300
Houston Thomas Rd
GoodOver: CRYSTAL CREEK
1.2 M. W. OF HWY 62, Washington, LA
Built 2001 Load: 34.3 t ADT: 410
LA0159
GoodOver: FLAT LICK BAYOU
10.65 MI N OF US 79 80, Webster, LA
Built 2004 Load: 34.3 t ADT: 837
US0190
GoodOver: US 190 OVER TIGER BAYOU
2.2 M E of LA 413, West Baton Rouge, LA
Built 2005 Load: 34.3 t ADT: 22,996
Lingo Lp
GoodOver: LYON BAYOU
.25 MILES EAST OF LA 589, West Carroll, LA
Built 2010 Load: 34.3 t ADT: 16
LA0066
GoodOver: CREEK
2.62 MI. N OF LA 968, West Feliciana, LA
Built 2010 Load: 34.3 t ADT: 1,677
LA0472
GoodOver: BIG CREEK RELIEF NO 1
3.53 MI N OF LA 1230, Winn, LA
Built 2010 Load: 34.3 t ADT: 332
LA0472
GoodOver: BIG CREEK RELIEF NO 2
3.65 MI N OF LA 1230, Winn, LA
Built 2010 Load: 34.3 t ADT: 332
LA0472
GoodOver: DRY CREEK
6.80 MI. NORTH OF LA 1230, Winn, LA
Built 2010 Load: 34.3 t ADT: 332
Hebron
GoodOver: HEBRON BRANCH
0.36 MI. SE OF LA 126, Winn, LA
Built 1992 Load: 34.3 t ADT: 30
LA0091
GoodOver: QUEUE DE TORTUE BAYOU
1.5 Mi. North of LA 714, Acadia, LA
Built 1979 Load: 34.5 t ADT: 1,947
US0061
GoodOver: BAYOU FRANCOIS
0.85 M SE of US 61&LA 429, Ascension, LA
Built 1976 Load: 34.5 t ADT: 16,379
US0061
GoodOver: NEW RIVER
0.03 M NW of US 61&LA 429, Ascension, LA
Built 1976 Load: 34.5 t ADT: 24,014
US0071
GoodOver: KCS RAILROAD OVERPASS
1.58 MI N OF JCT LA 515, Bossier, LA
Built 2001 Load: 34.5 t ADT: 816
LA0002-A
GoodOver: REEDER CREEK RELIEF
2.68 MI EAST OF LA 807, Claiborne, LA
Built 2001 Load: 34.5 t ADT: 1,329
LA0002-A
GoodOver: REEDER CREEK
2.83 MI EAST OF LA 807, Claiborne, LA
Built 2001 Load: 34.5 t ADT: 1,329
US0061
GoodOver: MONTE SANO BAYOU
0.3 M W of US 61&LA 67, East Baton Rouge, LA
Built 1976 Load: 34.5 t ADT: 10,596
I0110
GoodOver: Calumet St
1.2 Mi. N. of LA 67, East Baton Rouge, LA
Built 1970 Load: 34.5 t ADT: 8,250
LA3139
GoodOver: I.C.G. RR
.14 MI SOUTH OF US 61, Jefferson, LA
Built 1977 Load: 34.5 t ADT: 55,872
I0010
GoodOver: OFF RP FROM I-10 EAST
5.4 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 34.5 t ADT: 15,955
I0049
GoodOver: Pont Des Mouton
0.95 MI NORTH OF I-10, Lafayette, LA
Built 1981 Load: 34.5 t ADT: 38,572
US0090
GoodOver: CITY STREETS
0.01 MI W OF BARONNE ST, Orleans, LA
Built 1991 Load: 34.5 t ADT: 7,620
US0090-B
GoodOver: CITY STREETS
1.60 MI SOUTH OF I-10, Orleans, LA
Built 1995 Load: 34.5 t ADT: 7,620
US0090-B
GoodOver: GROUND
1.86 MI SOUTH OF MISS. RI, Orleans, LA
Built 1993 Load: 34.5 t ADT: 7,620
I0010
GoodOver: I 10 EAST
.71 MI EAST OF US 90, Orleans, LA
Built 1969 Load: 34.5 t ADT: 7,620
LA0151
GoodOver: CHOUDRANT CREEK
1.1 MI NORTH OF SOUTH INT, Ouachita, LA
Built 1978 Load: 34.5 t ADT: 2,862
LA0112
GoodOver: BEAVER CREEK
1.0 MI. EAST OF US 165, Rapides, LA
Built 1971 Load: 34.5 t ADT: 2,304
I0049
GoodOver: HYNSON BAYOU
1.11 MI. SOUTH OF US 167B, Rapides, LA
Built 1995 Load: 34.5 t ADT: 31,285
I0310
GoodOver: SWAMP
0.01 M SOUTH OF I-10, St. Charles, LA
Built 1992 Load: 34.5 t ADT: 56,783
I0310
GoodOver: I 310 N FROM US 90
0.60 MI N. OF US 90, St. Charles, LA
Built 1986 Load: 34.5 t ADT: 29,468
I0010
GoodOver: WB OFF RAMP (US51)
10.4 Mi. W. of I-310, St. John the Baptist, LA
Built 1972 Load: 34.5 t ADT: 7,896
I0055
GoodOver: I-55 ON RAMP NORTH @ US5
0.1 M W OF US 51, St. John the Baptist, LA
Built 1975 Load: 34.5 t ADT: 15,642
LA0013
GoodOver: DRAINAGE CANAL
1.81 MI NORTH OF US 190, St. Landry, LA
Built 1978 Load: 34.5 t ADT: 6,481
I0049
GoodOver: E.Grolee St/MPRR
0.2 MI N of US 190, St. Landry, LA
Built 1983 Load: 34.5 t ADT: 14,400
4-Mile Bayou Rd
GoodOver: Canal
6.1 Mi. E. of LA 70, St. Martin, LA
Built 2020 Load: 34.5 t ADT: 105
LA0096
GoodOver: CYPRESS BAYOU
1.8 MI W OF US 90, St. Martin, LA
Built 1978 Load: 34.5 t ADT: 6,714
US0090-W
GoodOver: SOUTHERN PACIFIC RAILROA
2.5 MI EAST OF US90, St. Mary, LA
Built 1997 Load: 34.5 t ADT: 12,788
US0190
GoodOver: ABITA RIVER
2.1 MILES NORTH OF I-12, St. Tammany, LA
Built 1975 Load: 34.5 t ADT: 14,668
LA0021
GoodOver: WRIGHT'S CREEK
LA0021, St. Tammany, LA
Built 1975 Load: 34.5 t ADT: 8,257
I0012
GoodOver: TANGIPAHOA RIVER
I0012, Tangipahoa, LA
Built 1975 Load: 34.5 t ADT: 17,665
Community Rd
GoodOver: BULL HOLE CANAL
2.0 Mi W of La 82, Vermilion, LA
Built 2012 Load: 34.5 t ADT: 266
LA0010
GoodOver: BOGUE CHITTO RELIEF
0.05 MI E LA 440 INTER., Washington, LA
Built 1996 Load: 34.5 t ADT: 12,018
Showing 8,951-9,000 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 |