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
Richardson Rd
GoodOver: RICHARDSON DRIVE BRIDGE
2 MILES W OF JCT 42 & 43, Livingston, LA
Built 1994 Load: 32.4 t ADT: 150
Pardue Rd
GoodOver: CREEK
0.15 M N of LA 42, Livingston, LA
Built 1990 Load: 32.4 t ADT: 300
SAM VILLARDO RD
GoodOver: BRUSHY BAYOU
0.1 MI S of LA 602, Madison, LA
Built 1997 Load: 32.4 t ADT: 96
Grabault Rd.
GoodOver: CREEK
0.8 MILES EAST OF LA 138, Morehouse, LA
Built 2012 Load: 32.4 t ADT: 2,100
Grabault Rd.
GoodOver: CREEK
0.2 MILES EAST JCT LA138, Morehouse, LA
Built 2012 Load: 32.4 t ADT: 2,100
LA0835
GoodOver: CREEK
5.7 MILES EAST OF US 165, Morehouse, LA
Built 2013 Load: 32.4 t ADT: 366
FRANK BELL RD
GoodOver: PATTEN SLOUGH
2.0 MILES EAST OF LA 138, Morehouse, LA
Built 2012 Load: 32.4 t ADT: 50
US0165
GoodOver: CREEK
5.0 MI NORTH OF NORTH INT, Morehouse, LA
Built 1926 Load: 32.4 t ADT: 1,405
VINEY WOODS RD
GoodOver: BAYOU BONNE IDEE
3.5 MI NE of LA 134, Morehouse, LA
Built 2008 Load: 32.4 t ADT: 100
DOWD RD
GoodOver: DRAINAGE CANAL
0.4 MI W of LA 138, Morehouse, LA
Built 2008 Load: 32.4 t ADT: 500
DOWD RD
GoodOver: SANDY LICK CREEK
1.6 MI E LA 139, Morehouse, LA
Built 1997 Load: 32.4 t ADT: 390
NIP ECKLES RD
GoodOver: COULEE BAYOU
0.5 MI W LA 138, Morehouse, LA
Built 1999 Load: 32.4 t ADT: 80
HENRY AVE
GoodOver: STALKINGHEAD CREEK
0.8 MI W INT 003, Morehouse, LA
Built 1988 Load: 32.4 t ADT: 400
YELDELL RD
GoodOver: THE GLADES
0.8 MI E of LA 140, Morehouse, LA
Built 2008 Load: 32.4 t ADT: 200
LA0478
GoodOver: SLATE BRANCH
2.74 MILES EAST OF LA 120, Natchitoches, LA
Built 2013 Load: 32.4 t ADT: 172
US0071
GoodOver: CREEK
2.01 MI. N OF INT LA6/US8, Natchitoches, LA
Built 1955 Load: 32.4 t ADT: 6,456
US0084
GoodOver: BOURBEAUX BAYOU
3.56 MI. EAST OF US 71, Natchitoches, LA
Built 1987 Load: 32.4 t ADT: 4,081
LA0001
GoodOver: DRY BRANCH CREEK
2.55 MI. N OF INT LA119, Natchitoches, LA
Built 1989 Load: 32.4 t ADT: 996
LA0001
GoodOver: DITCH
2.2 MI. N OF N INT LA119, Natchitoches, LA
Built 1936 Load: 32.4 t ADT: 2,835
LA0009
GoodOver: DRAIN
2.42 MI. N. OF LA 153, Natchitoches, LA
Built 1952 Load: 32.4 t ADT: 1,032
I0049
GoodOver: LIMEKILN BAYOU
1.2 MI. S OF JCT LA 6, Natchitoches, LA
Built 1985 Load: 32.4 t ADT: 18,305
I0049
GoodOver: CREEK
5.21 MI. NORTH OF LA 6, Natchitoches, LA
Built 1984 Load: 32.4 t ADT: 18,305
I0049
GoodOver: MIDDLE BAYOU
7.09 MI. NORTH OF LA 6, Natchitoches, LA
Built 1985 Load: 32.4 t ADT: 18,305
I0049
GoodOver: COW BAYOU
1.1 MI NORTH OF LA 485, Natchitoches, LA
Built 1987 Load: 32.4 t ADT: 16,334
I0049
GoodOver: INDIAN BAYOU
1.07 MI. NORTH OF LA 174, Natchitoches, LA
Built 1985 Load: 32.4 t ADT: 16,334
LA0484
GoodOver: CANE RIVER SPILLWAY
.82 MI. S OF INT LA494, Natchitoches, LA
Built 1948 Load: 32.4 t ADT: 111
Nid Aigie Rd
GoodOver: BAYOU NID AIGLE
1.44 MILES EAST OF LA 491, Natchitoches, LA
Built 2000 Load: 32.4 t ADT: 52
Robeline-Provencal
GoodOver: TRUDO CREEK
0.6 MILES WEST OF LA 117, Natchitoches, LA
Built 1996 Load: 32.4 t ADT: 302
Raplh St
GoodOver: DRAINAGE DITCH
0.3 MI. NORTH OF LA 494, Natchitoches, LA
Built 2000 Load: 32.4 t ADT: 52
Posey Rd
GoodOver: POSEY BRANCH
3.0 MILES WEST OF I-49, Natchitoches, LA
Built 2008 Load: 32.4 t ADT: 72
Mammy Trail Rd
GoodOver: CHEE CHEE CREEK
0.88 MI. NORTH OF LA 1226, Natchitoches, LA
Built 1997 Load: 32.4 t ADT: 350
Plaza Dr
GoodOver: CITRUS CANAL
.5 MILES SOUTH I-10, Orleans, LA
Built 1980 Load: 32.4 t
COPERNICUS ST
GoodOver: ALGIERS CANAL
0.5 MILES SOUTH OF US 90B, Orleans, LA
Built 1993 Load: 32.4 t
US0090
GoodOver: DRAIN CANAL
6.0 MILES SOUTH OF I-610, Orleans, LA
Built 1960 Load: 32.4 t ADT: 49,920
General de Gaulle
GoodOver: NORMAN CANAL
2.3 MI SOUTHEAST OF US 90, Orleans, LA
Built 1975 Load: 32.4 t
Dwyer BLVD
GoodOver: BENSON CANAL
1.- MI. S. OF 1-10, Orleans, LA
Built 1992 Load: 32.4 t
DWYER RD
GoodOver: CITRUS CANAL
1.2 MI. S. OF I-10, Orleans, LA
Built 1992 Load: 32.4 t
France Rd
GoodOver: FLORIDA AVE CANAL
1.4 MI. E. OF I-10, Orleans, LA
Built 2013 Load: 32.4 t
US0090
GoodOver: METAIRIE RELIEF CANAL
0.2 MI S OF LA 3139, Orleans, LA
Built 2018 Load: 32.4 t ADT: 28,615
Esplanade Ave
GoodOver: BAYOU ST. JOHN
0.02 MI S. OF CITY PK AVE, Orleans, LA
Built 1985 Load: 32.4 t
US0080
GoodOver: Union Pacific Railroad
0.15 Mi. N. of LA 139, Ouachita, LA
Built 2019 Load: 32.4 t ADT: 17,683
COX ST
GoodOver: BLACK BAYOU LATERAL
0.4 MILES EAST OF LA 617, Ouachita, LA
Built 2014 Load: 32.4 t ADT: 300
DEBORAH DR.
GoodOver: HOGS BAYOU
2.4 MI NW OF US 165, Ouachita, LA
Built 2017 Load: 32.4 t ADT: 1,686
MATT HAMMONDS RD
GoodOver: HOGWASH CREEK
1.8 MI N of US 80 E, Ouachita, LA
Built 2005 Load: 32.4 t ADT: 300
HENRY MARTIN RD
GoodOver: DRAIN TO CYPRESS CREEK
1.63 MI E of LA 557, Ouachita, LA
Built 1996 Load: 32.4 t ADT: 100
CYPRESS SCHOOL RD
GoodOver: CYPRESS CREEK
0.014 MI N of LA 548, Ouachita, LA
Built 1996 Load: 32.4 t ADT: 310
TOWER DRIVE
GoodOver: YOUNG'S BAYOU
1.1 MI NW of I-20, Ouachita, LA
Built 2003 Load: 32.4 t ADT: 4,000
OLD ARKANSAS RD
GoodOver: CHYOCA CREEK
4.0M NW CHENIERE, Ouachita, LA
Built 1993 Load: 32.4 t ADT: 67
STUBBS-RITCHIE RD
GoodOver: PATRICK BAYOU
0.9 MI E of LA 594, Ouachita, LA
Built 1993 Load: 32.4 t ADT: 686
LA0413
GoodOver: BAYOU POYDRAS
0.17 M N of LA 3091, Pointe Coupee, LA
Built 1923 Load: 32.4 t ADT: 1,351
Showing 8,301-8,350 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 |