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
LA0028
FairOver: MUDDY BAYOU
6.8 MI SOUTH OF LA 84, LaSalle, LA
Built 1960 Load: 35.4 t ADT: 4,357
US0080
FairOver: CREEK
4.1 MI EAST OF LA 145, Lincoln, LA
Built 1948 Load: 35.4 t ADT: 3,275
LA0151
FairOver: BUCK BRANCH
.70 MI EAST OF US 167, Lincoln, LA
Built 1977 Load: 35.4 t ADT: 310
LA0151
FairOver: DRAINAGE CANAL
.98 MI EAST OF US 167, Lincoln, LA
Built 1977 Load: 35.4 t ADT: 310
LA0149
FairOver: ICG RAILROAD
JCT. LA 149 & LA 150, Lincoln, LA
Built 1976 Load: 35.4 t ADT: 5,192
LA0601
FairOver: BRUSHY BAYOU
.1 MI NOERTH OF I-20, Madison, LA
Built 1937 Load: 35.4 t ADT: 5,065
LA0001
FairOver: BAYOU PIERRE
1.0 MI N OF JCT LA 3191, Natchitoches, LA
Built 1975 Load: 35.4 t ADT: 1,988
US0165
FairOver: MPRR US 165
1.0 MI NORTH OF LA 594, Ouachita, LA
Built 1966 Load: 35.4 t ADT: 29,759
US0165
FairOver: MP R/R
1.0 MI NORTH OF LA 594, Ouachita, LA
Built 1966 Load: 35.4 t ADT: 17,565
I0020
FairOver: BAYOU LAFOURCHE
4.0 MI WEST OF LA 133, Richland, LA
Built 1968 Load: 35.4 t ADT: 16,997
I0020
FairOver: BOEUF RIVER
3.0 MI EAST OF LA 133, Richland, LA
Built 1968 Load: 35.4 t ADT: 38,890
US0061
FairOver: BONNET CARRE SPILLWAY
.7 MI WEST OF LA 48, St. Charles, LA
Built 1984 Load: 35.4 t ADT: 23,719
I0010
FairOver: SWAMP (EMERGENCY X-OVER)
3.0 MI WEST OF I-310, St. Charles, LA
Built 1992 Load: 35.4 t ADT: 29,468
LA0043
FairOver: ST JOSEPH BRANCH
0.1 M N OF LA 10, St. Helena, LA
Built 1976 Load: 35.4 t ADT: 1,419
LA0043
FairOver: LIVERPOOL BRANCH
1.1 M S OF LA 38, St. Helena, LA
Built 1977 Load: 35.4 t ADT: 1,419
LA0016
FairOver: TICKFAW RIVER
0.30M E JCT LA441 & LA16, St. Helena, LA
Built 1992 Load: 35.4 t ADT: 5,293
I0010
FairOver: BLIND RIVER
I0010, St. James, LA
Built 1975 Load: 35.4 t ADT: 49,274
I0010
FairOver: BLIND RIVER
I0010, St. James, LA
Built 1975 Load: 35.4 t ADT: 29,510
US0090
FairOver: WAX LAKE OUTLET
0.6 MI WEST OF LA 182, St. Mary, LA
Built 1975 Load: 35.4 t ADT: 10,035
LA0022
FairOver: TCHEFUNCTE R/MADISONVILL
MADISONVILLE (LA 22), St. Tammany, LA
Built 1980 Load: 35.4 t ADT: 16,517
LA0040
FairOver: BOGUE FALAYA RIVER
0.7 M E OF LA 25, St. Tammany, LA
Built 1978 Load: 35.4 t ADT: 3,689
LA0040
FairOver: BOGUE FALAYA RELIEF
0.8 M E OF LA 25, St. Tammany, LA
Built 1978 Load: 35.4 t ADT: 3,689
LA0040
FairOver: BEASON CREEK
0.3 M E OF LA 1080, St. Tammany, LA
Built 1979 Load: 35.4 t ADT: 3,689
LA0040
FairOver: PIGEON ROOST CREEK
LA 40 @ LOG MI 03.98, St. Tammany, LA
Built 1980 Load: 35.4 t ADT: 3,689
LA0040
FairOver: PIGEON ROOST CREEK
LA 40 @ LOGMI 04.11, St. Tammany, LA
Built 1980 Load: 35.4 t ADT: 3,689
LA0040
FairOver: BILLS BRANCH
0.1 M S OF LA 437, St. Tammany, LA
Built 1977 Load: 35.4 t ADT: 5,160
LA0024
FairOver: BAYOU TERREBONNE
LA0024, Terrebonne, LA
Built 1974 Load: 35.4 t ADT: 259
LA0015
FairOver: LITTLE CORNEY BAYOU
2.0 MI WEST OF LA 3121, Union, LA
Built 1978 Load: 35.4 t ADT: 838
LA0021
FairOver: LEE CREEK
LA0021, Washington, LA
Built 1950 Load: 35.4 t ADT: 7,160
LA0157
FairOver: LITTLE CROOKED CREEK
2.83 MI EAST OF US 371, Webster, LA
Built 1978 Load: 35.4 t ADT: 1,757
LA0002
FairOver: BLACK BAYOU
5.15 MI EAST OF LA 1, Caddo, LA
Built 1980 Load: 35.6 t ADT: 1,382
HIGHLAND AVENUE
FairOver: OCKLEY DITCH
0.8 MI SO OF KINGS HWY., Caddo, LA
Built 1996 Load: 35.6 t ADT: 2,000
Choctaw Lane
FairOver: CHOCTAW BAYOU
0.2 MI N OF CADDO RD 6, Caddo, LA
Built 1998 Load: 35.6 t ADT: 23
GREEN ISLAND RD
FairOver: GREEN ISLAND MARSH CREEK
5.3 MI EAST OF LA 109, Calcasieu, LA
Built 1996 Load: 35.6 t ADT: 125
LA0008
FairOver: OUACHITA RIVER
0.26 MI E OF LA 124, Catahoula, LA
Built 2017 Load: 35.6 t ADT: 1,394
Buffalo RD
FairOver: BUFFALO BAYOU
1.78 M SOUTH OF LA 509, De Soto, LA
Built 1991 Load: 35.6 t ADT: 165
HOLLYBROOK RD
FairOver: MUD SLOUGH
0.2 MI EAST OF LA 134, East Carroll, LA
Built 1987 Load: 35.6 t ADT: 160
Leman Rd
FairOver: BEAVER CREEK
0.75 Mi S of La 106, Evangeline, LA
Built 1996 Load: 35.6 t ADT: 115
US0090
FairOver: RODERE CANAL
0.56 Mi E of LA 329, Iberia, LA
Built 1969 Load: 35.6 t ADT: 32,022
RADIO TOWER ROAD
FairOver: DRAIN
1.7 MI E of LA 102, Jefferson Davis, LA
Built 1987 Load: 35.6 t ADT: 30
High Meadow Blvd
FairOver: COULEE
0.08 Mi E0. of I-49, Lafayette, LA
Built 1974 Load: 35.6 t ADT: 1,000
Audubon Ave
FairOver: LAFOURCHE BAYOU
00.01 LOG MI. FROM LA 308, Lafourche, LA
Built 1986 Load: 35.6 t ADT: 7,219
ROCKSHOP RD
FairOver: CYPRESS BAYOU
0.4 MI NW of US 167, Lincoln, LA
Built 2003 Load: 35.6 t ADT: 500
ALLEN TOUSSAINT B
FairOver: LONDON AV.CANAL
0.01 MI W OF WICKFIELD DR, Orleans, LA
Built 1958 Load: 35.6 t
LA8406
FairOver: CREEK
1.67 MI NORTH OF US 80, Ouachita, LA
Built 1962 Load: 35.6 t ADT: 15,737
US0190
FairOver: BAYOU COURTABLEAU E.B.
4.55 MI EAST OF LA 741, St. Landry, LA
Built 2004 Load: 35.6 t ADT: 13,476
Lebeau Church Rd
FairOver: BAYOU PETITE PRAIRIE
0.75 Mi SE of La 10, St. Landry, LA
Built 1992 Load: 35.6 t ADT: 110
Lakeshore Dr
FairOver: LITTLE BAYOU BRIDGE
1.0 M SW of US 190, St. Tammany, LA
Built 1996 Load: 35.6 t ADT: 1,300
Victory Rd
FairOver: BOONE CREEK
3.5 MI. SE OF US 80, Webster, LA
Built 1990 Load: 35.6 t ADT: 25
I0010
FairOver: BAYOU CONWAY
0.3 M SE of LA 44, Ascension, LA
Built 1979 Load: 36.0 t ADT: 57,444
Showing 4,751-4,800 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 |