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
ENTERPRISE DR
GoodOver: LITTLE BAYOU BLACK
0.2 MILE NORTH EAST OF LA, Terrebonne, LA
Built 2012 Load: 47.3 t ADT: 5,909
ENTERPRISE DR.
GoodOver: LITTLE BAYOU BLACK
0.2 MILE NORTH EAST OF LA, Terrebonne, LA
Built 2012 Load: 47.3 t ADT: 5,909
LA0331
GoodOver: CREEK
0.43 MILES N. OF LA 330, Vermilion, LA
Built 2015 Load: 47.3 t ADT: 1,518
Cocodril Rd
GoodOver: COULEE
0.4 Mi. E. of La 343, Acadia, LA
Built 1986 Load: 47.6 t ADT: 36
STANLEY STREET
GoodOver: CREEK
0.04 MI W OF POWELL LANE, Calcasieu, LA
Built 2011 Load: 47.6 t ADT: 10
E. GAUTHIER RD
GoodOver: BLACK BAYOU TRIBUTARY
0.8 MI of E LA 397, Calcasieu, LA
Built 1988 Load: 47.6 t ADT: 7,344
LA0067
GoodOver: CYPRESS BAYOU
APPROX. .1 MI. SOUTH OF B, East Baton Rouge, LA
Built 2009 Load: 47.6 t ADT: 26,463
ALPHONSE FORBES RD
GoodOver: SANDY CR
0.61 MI S OF LA 409, East Baton Rouge, LA
Built 2023 Load: 47.6 t ADT: 73
Douglas Rd
GoodOver: SWAFFORD CREEK
0.51 MILES WEST OF NEWTON, Grant, LA
Built 2013 Load: 47.6 t ADT: 100
Grabault Rd.
GoodOver: Bayou Coulee
0.7 MILES EAST OF JCT LA, Morehouse, LA
Built 2012 Load: 47.6 t ADT: 2,100
LA1176
GoodOver: Bayou Boeuf
0.45 Mi E of LA 29, Avoyelles, LA
Built 2022 Load: 48.0 t ADT: 310
I0049
GoodOver: EAGLE CHUTE
0.71 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 48.0 t ADT: 53,023
I0049
GoodOver: EAGLE CHUTE
0.71 M. N. OF LA 170, Caddo, LA
Built 2013 Load: 48.0 t ADT: 6,846
MURPHY ST
GoodOver: KCS RR
0.05 MI E OF US 80, Caddo, LA
Built 2016 Load: 48.0 t ADT: 13,100
LA0520
GoodOver: MIDDLE FORK B, DARBONNE
9.4 MI. N. OF US 79, Claiborne, LA
Built 2017 Load: 48.0 t ADT: 532
Congress BLVD
GoodOver: Dawson Cr
0.1 Mi. N. of LA 427, East Baton Rouge, LA
Built 2021 Load: 48.0 t ADT: 4,262
Willie Redden Rd
GoodOver: BLACK CREEK
2.6 MILES SOUTH OF LA 10, St. Helena, LA
Built 2014 Load: 48.0 t
Sibley Rd
GoodOver: BRANCH
1.3 MILES SOUTH OF LA 16, St. Helena, LA
Built 2014 Load: 48.0 t
Hornsby Rd
GoodOver: CREEK
1 MILE NORTH OF LA. 16, St. Helena, LA
Built 2014 Load: 48.0 t
Carrier Rd
GoodOver: DUTCHMAN CREEK
ON CARRIER ROAD 0.35 MILE, St. Helena, LA
Built 2014 Load: 48.0 t
I0010
GoodOver: PANAMA CANAL
I0010, Ascension, LA
Built 1975 Load: 48.1 t ADT: 49,274
LA0662
GoodOver: PUMPING STATION BRIDGE
2.04 MI N OF END OF LA662, Assumption, LA
Built 1998 Load: 48.1 t ADT: 2,905
I0010
GoodOver: VET MEM HWY
2.1 MI EAST OF LA 49, Jefferson, LA
Built 1967 Load: 48.1 t ADT: 4,217
Louisiana Ave.
GoodOver: COULEE
0.57 Mi S of I-10, Lafayette, LA
Built 2004 Load: 48.1 t ADT: 4,250
Louisiana Ave.
GoodOver: COULEE
1.93 Mi N of La 94, Lafayette, LA
Built 2004 Load: 48.1 t ADT: 4,675
I0049
GoodOver: BAYOU BARBUE
0.84 MI. NORTH OF LA 490, Natchitoches, LA
Built 1984 Load: 48.1 t ADT: 28,142
I0010
GoodOver: ON RAMP-ELY FDS.
.68 MI EAST OF LA 39, Orleans, LA
Built 1974 Load: 48.1 t ADT: 7,620
US0080
GoodOver: YOUNGS BAYOU
.7 MI EAST OF LA 840-6, Ouachita, LA
Built 1962 Load: 48.1 t ADT: 17,683
US0171
GoodOver: PHILLIPS CREEK
0.51 MI. SOUTH OF LA 175, Sabine, LA
Built 2006 Load: 48.1 t ADT: 4,790
US0171
GoodOver: HARPOON BAYOU RELIEF
0.28 MI. SOUTH OF LA 175, Sabine, LA
Built 2006 Load: 48.1 t ADT: 4,790
US0171
GoodOver: HARPOON BAYOU
0.08 MI. SOUTH OF LA 175, Sabine, LA
Built 2006 Load: 48.1 t ADT: 4,790
LA0010
GoodOver: CREEK
0.7 M E OF US 51, Tangipahoa, LA
Built 1966 Load: 48.1 t ADT: 3,768
LA0399
GoodOver: WHISKEY CHITTO CREEK
5.72 MI. SOUTH OF LA 10, Vernon, LA
Built 2001 Load: 48.1 t ADT: 957
LA0070
GoodOver: STREAM
1.4 M S of LA 70&LA 22, Ascension, LA
Built 1966 Load: 48.3 t ADT: 24,210
St Vincent Rd
GoodOver: SAINT VINCENT BAYOU
0.4 MI S OF LA 402, Assumption, LA
Built 2015 Load: 48.3 t ADT: 96
LA0106
GoodOver: Bayou Beouf
0.5 M E of I-49, Avoyelles, LA
Built 2021 Load: 48.3 t ADT: 1,294
CAL ROAD
GoodOver: CLAY CUT BAYOU
0.2 M S OF LA 73, East Baton Rouge, LA
Built 2023 Load: 48.3 t ADT: 2,074
ROSSIGNOL ROAD
GoodOver: BELL CITY DRAINAGE CANAL
1.8 MI W OF LA 14, Calcasieu, LA
Built 2019 Load: 48.6 t ADT: 353
US0061
GoodOver: BAKER CANAL
500 FEET SOUTH OF LA.964, East Baton Rouge, LA
Built 2016 Load: 48.6 t ADT: 16,910
W Congress Street
GoodOver: Queue de Tortue Bayou
0.6 Mi E of LA 343, Lafayette, LA
Built 2018 Load: 48.6 t ADT: 1,687
Lebesque Rd
GoodOver: Coulee Mine
0.6 Mi. W. Of LA 182, Lafayette, LA
Built 2019 Load: 48.6 t ADT: 5,010
Needham Rd
GoodOver: CREEK
3 TENTHS OF A MILE NORTH, St. Helena, LA
Built 2013 Load: 48.6 t ADT: 250
LINTON ROAD
GoodOver: FLAT RIVER
2.5 MI E OF LA 3, Bossier, LA
Built 2022 Load: 48.9 t ADT: 6,500
I0049
GoodOver: MCCAIN CREEK
0.03 MI. S. OF LA 1, Caddo, LA
Built 2016 Load: 48.9 t ADT: 6,846
George Mashon Rd
GoodOver: Little Natalbany River
1.24 Mi. S. of LA 40, Livingston, LA
Built 2020 Load: 48.9 t ADT: 127
I0049
GoodOver: MT ZION RD
RAMP WS AT LA 3132 INTG, Caddo, LA
Built 1991 Load: 49.0 t ADT: 87,567
I0110
GoodOver: 22 ST. OFF RAMP
I0110, East Baton Rouge, LA
Built 1970 Load: 49.0 t ADT: 8,250
I0110
GoodOver: CANAL
0.3 M N of US 61, East Baton Rouge, LA
Built 1976 Load: 49.0 t ADT: 64,059
Millerville Rd
GoodOver: HONEY CUT BAYOU
0.5 M N OF I12, East Baton Rouge, LA
Built 2006 Load: 49.0 t ADT: 6,500
Malapart Rd.
GoodOver: MIMS COULEE
0.5M WEST OF LA 182, Lafayette, LA
Built 1991 Load: 49.0 t ADT: 780
Showing 10,901-10,950 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 |