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
Mt. Sinai
GoodOver: TROUT CREEK
LOGMI 4.60 FR 518 TO 450, LaSalle, LA
Built 1998 Load: 24.3 t ADT: 180
Zimmer Creek Rd
GoodOver: Thunderbird Creek
0.6 m North of US 84E, LaSalle, LA
Built 1997 Load: 24.3 t ADT: 110
Pleasant Hill Ch
GoodOver: SALT CREEK
0.05 MI. EAST OF LA 9, Natchitoches, LA
Built 2000 Load: 24.3 t ADT: 132
LA1216
GoodOver: DITCH
4.1 MI EAST OF US 171, Sabine, LA
Built 1966 Load: 24.3 t ADT: 209
Dominiques Rd
GoodOver: Bayou Rouge
0.02 Mi. N. of La 107, St. Landry, LA
Built 2005 Load: 24.3 t ADT: 125
W. 19th Ave
GoodOver: MILE BRANCH
0.4 MILE EAST OF JOHNSON, St. Tammany, LA
Built 1990 Load: 24.3 t ADT: 300
Chalybeate Spr Rd.
GoodOver: MARTIN CREEK Trib
2.4 Mi. N. of LA 157, Bossier, LA
Built 2017 Load: 24.5 t ADT: 180
LA0069
GoodOver: FALSE BRANCH
5.6 M N of LA 70, Iberville, LA
Built 1962 Load: 24.5 t ADT: 3,301
LA0020
GoodOver: DRAINAGE CANAL
4.24 MI NORTH OF LA 308, Lafourche, LA
Built 1968 Load: 24.5 t ADT: 20,091
WISE RD
GoodOver: FIVE MI CREEK
2.2 MI SE OF LA 545, Lincoln, LA
Built 2018 Load: 24.5 t ADT: 152
LAPINE RD
GoodOver: CPRESS CREEK
5.3 MI. S. OF LA 34, Ouachita, LA
Built 2018 Load: 24.5 t ADT: 212
US0051
GoodOver: COOL CREEK
0.84 MI. NORTH OF LA 38, Tangipahoa, LA
Built 1935 Load: 24.5 t ADT: 2,403
DOTSAY RD
GoodOver: COULEE BATON CANAL
0.4 Mi W of Lionel Rd, Vermilion, LA
Built 2018 Load: 24.5 t ADT: 133
Melrose Rd
GoodOver: GALLEQUE COULEE
0.3 Mi W of La 335, Vermilion, LA
Built 2012 Load: 24.5 t ADT: 77
Wright Rd
GoodOver: COULEE
2.8 Mi S of La 14, Vermilion, LA
Built 1969 Load: 24.5 t ADT: 150
Freeland Rd
GoodOver: Hammer Creek
0.4 Mi. E. of LA 966, West Feliciana, LA
Built 2022 Load: 24.5 t ADT: 40
Faulk Rd.
GoodOver: LYONS POINT GULLY
0.18 MI. E. OF LA 13, Acadia, LA
Built 2012 Load: 24.6 t ADT: 384
Fournerat Rd.
GoodOver: Richards Gully
0.1 Mi. E. of La 91, Acadia, LA
Built 2012 Load: 24.6 t ADT: 1,296
Stakes Rd.
GoodOver: DE SAULE COULEE
0.8 Mi. E. of La 3070, Acadia, LA
Built 1999 Load: 24.6 t ADT: 24
THIRTEENTH ST
GoodOver: CREEK
0.2 MILES SOUTH OF LA 26, Allen, LA
Built 2011 Load: 24.6 t ADT: 900
LA0012
GoodOver: CREEK
5.5 MI E OF LA 27, Beauregard, LA
Built 1993 Load: 24.6 t ADT: 3,360
I0049
GoodOver: MYRA-MIRTUS RD
I-49 OVER MYRA-MYRTIS RD, Caddo, LA
Built 2014 Load: 24.6 t ADT: 53,023
I0049
GoodOver: MYRA-MYRTIS RD
I-49 OVER MYRA-MYRTIS RD, Caddo, LA
Built 2014 Load: 24.6 t ADT: 6,846
Robson Rd
GoodOver: CHICO BAYOU RELIEF
1.0 MI SW OF LA 1, Caddo, LA
Built 1997 Load: 24.6 t ADT: 150
Blanchard Latex Rd
GoodOver: TR TO SHETTLEWORTH BAYOU
0.3 MI. EAST OF LA 169, Caddo, LA
Built 2000 Load: 24.6 t ADT: 76
Riley Rd
GoodOver: PINE BAYOU
0.04 MI W OF LA 618, Franklin, LA
Built 2006 Load: 24.6 t ADT: 125
Mary Barron Rd
GoodOver: BIG CREEK
1.07 M N OF DYSON CR. RD., Grant, LA
Built 1998 Load: 24.6 t ADT: 30
LA0657
GoodOver: BAYOU LAFOURCHE
LA 657 BETWEEN LA 1 AND L, Lafourche, LA
Built 2013 Load: 24.6 t ADT: 443
Zimmer Creek Rd
GoodOver: Zimmer Creek
1.1miles southwest LA 127, LaSalle, LA
Built 1999 Load: 24.6 t ADT: 50
JOLIET ST
GoodOver: PALMETTO AVENUE CANAL
0.25 MI. W. OF CARROLLTON, Orleans, LA
Built 1985 Load: 24.6 t
CAMBRONNE ST
GoodOver: PALMETTO AVENUE CANAL
0.2 MI. W. OF CARROLTON, Orleans, LA
Built 1985 Load: 24.6 t
CHERRY ST
GoodOver: PALMETTO AVENUE CANAL
0.2 MI. W. OF US 61, Orleans, LA
Built 1985 Load: 24.6 t
US0165
GoodOver: INDIAN CREEK
1.7 M N OF N JCT. LA 112, Rapides, LA
Built 2005 Load: 24.6 t ADT: 8,811
Dupard St.
GoodOver: Little Bayou Castine
0.65 Mi E. of La 59, St. Tammany, LA
Built 1998 Load: 24.6 t ADT: 400
LA0016
GoodOver: CREEK
7.4 MILES E OF PARISH LN, Washington, LA
Built 2003 Load: 24.6 t ADT: 8,684
Vanveville Rd
GoodOver: Willow Chute Bayou
1.1 mi e of la 3, Bossier, LA
Built 2018 Load: 24.9 t ADT: 870
ANTRIM ROAD
GoodOver: LITTLE CYPRESS ROAD
0.70 MI E OF LA 3, Bossier, LA
Built 2019 Load: 24.9 t ADT: 100
Daleen Rd
GoodOver: FiFi Bayou Trib
0.13 SOUTH OF JCT 80, Bossier, LA
Built 2013 Load: 24.9 t ADT: 20
Tall Timbers Blvd
GoodOver: Tall Timbers Lateral
0.01 MI N. OF US 80, Bossier, LA
Built 2003 Load: 24.9 t ADT: 2,000
Neathery Rd
GoodOver: CREEK
0.5M E of LA 849, Caldwell, LA
Built 2001 Load: 24.9 t ADT: 50
Posey-Webb Camp Hw
GoodOver: FORD CREEK
0.7 Mi E of Dixie Springs, Catahoula, LA
Built 1998 Load: 24.9 t ADT: 100
Blount Rd
GoodOver: GIBBENS LATERAL
1.0 MI WEST OF PLANK RD, East Baton Rouge, LA
Built 1987 Load: 24.9 t ADT: 5,477
Overton Ford Rd
GoodOver: COMITE RIVER
1 MILE E. OF LA 955 & OVE, East Feliciana, LA
Built 2006 Load: 24.9 t ADT: 542
US0090
GoodOver: DRAIN CANAL
4.0 MI WEST OF US 90B, Jefferson, LA
Built 1940 Load: 24.9 t ADT: 28,780
CLIFTON ROAD
GoodOver: GULLY
0.90 MI W OF LA 101, Jefferson Davis, LA
Built 2004 Load: 24.9 t ADT: 110
Guilbeau Rd.
GoodOver: DRAINAGE
.1 MI E. OF LA 3073, Lafayette, LA
Built 1984 Load: 24.9 t ADT: 1,478
Garan Dr
GoodOver: CREEK
450' south of US 84E, LaSalle, LA
Built 1969 Load: 24.9 t ADT: 105
Sunshine Rd
GoodOver: BAYOU FUNNY LOUIS
0.07M FROM 468 TO 649, LaSalle, LA
Built 1992 Load: 24.9 t ADT: 60
LA0441
GoodOver: CREEK
5.25 MILES NORTH OF 442, Livingston, LA
Built 2004 Load: 24.9 t ADT: 4,270
LOUIS WHITE RD
GoodOver: GALION BAYOU
2.5 MI. EAST OF US 165, Morehouse, LA
Built 2012 Load: 24.9 t ADT: 100
Showing 7,151-7,200 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 |