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
LA0016
FairOver: GREEN LAKE CR
0.3 M S OF LA 1072, Washington, LA
Built 1972 Load: 42.6 t ADT: 2,087
I0010
FairOver: RAMP
0.21 M W of LA 1, West Baton Rouge, LA
Built 1968 Load: 42.6 t ADT: 18,560
LA0066
FairOver: BAYOU SARA (BACKWATER)
1.2 MI W of US61, West Feliciana, LA
Built 1980 Load: 42.6 t ADT: 4,492
US0167
FairOver: PORT DELUCE CREEK
0.27 MI. SOUTH OF LA 501, Winn, LA
Built 1991 Load: 42.6 t ADT: 10,307
US0080
FairOver: CROSS BAYOU
1.99 MI. E. OF TEXAS LINE, Caddo, LA
Built 2016 Load: 42.8 t ADT: 3,924
RENWICK ST
FairOver: YOUNGS BAYOU
RENWICK ST. MONROE L, Ouachita, LA
Built 1962 Load: 42.8 t ADT: 3,000
I0020
FairOver: CROSS BAYOU RELF
2.8 MI WEST OF LA 169, Caddo, LA
Built 1964 Load: 43.1 t ADT: 98,318
I0020
FairOver: CROSS BAYOU RELF
2.8 MI WEST OF LA 169, Caddo, LA
Built 1964 Load: 43.1 t ADT: 98,318
GRABAULT RD
FairOver: BAYOU GALION
.5 MI. E. LA. HWY. 1, Morehouse, LA
Built 1983 Load: 43.1 t ADT: 290
J. W. Davis Drive
FairOver: CREEK
0.6 Mi S of Coleman Ave, Tangipahoa, LA
Built 2010 Load: 43.1 t ADT: 4,984
POWELL ROAD
FairOver: RODGERS GULLY
0.1 MI N of MLK DR, Jefferson Davis, LA
Built 2020 Load: 43.4 t ADT: 1,226
BEACH RD
FairOver: COW BAYOU
0.7 MI SE of US 80, Richland, LA
Built 2005 Load: 43.4 t ADT: 100
HARVEY CROSSING
FairOver: ANACOCO BAYOU
3.53 MI. E. OF LA 464, Vernon, LA
Built 2001 Load: 43.4 t ADT: 100
LA0178
FairOver: BAYOU
1.3 Mi NE Of LA 95, Acadia, LA
Built 1975 Load: 43.5 t ADT: 3,177
LA0035
FairOver: B.QUE DE TORTUE
2.3 Miles N of La 92, Acadia, LA
Built 1976 Load: 43.5 t ADT: 1,034
US0190
FairOver: CLEAR CREEK
0.3 MI W of LA 113, Allen, LA
Built 1991 Load: 43.5 t ADT: 3,263
US0190
FairOver: BUNCHY CREEK
3.8 MI E of LA 113, Allen, LA
Built 1991 Load: 43.5 t ADT: 3,263
US0190
FairOver: WEST CALCASIEU RIVER REL
7.6 MI. E OF LA 113, Allen, LA
Built 1980 Load: 43.5 t ADT: 3,923
LA0070
FairOver: PANAMA CANAL
LA3089, Ascension, LA
Built 1966 Load: 43.5 t ADT: 24,210
LA0070
FairOver: BAYOU NAPOLEON
0.8 M SW of LA 3127, Assumption, LA
Built 1972 Load: 43.5 t ADT: 11,166
LA0398
FairOver: BAYOU MORGAN CITY
LA0398, Assumption, LA
Built 1969 Load: 43.5 t ADT: 2,115
LA0398
FairOver: BAYOU L OURSE
LA0398, Assumption, LA
Built 1969 Load: 43.5 t ADT: 2,115
LA0106
FairOver: DIVERSION CANAL
1.01 MI EAST OF LA 29, Avoyelles, LA
Built 1986 Load: 43.5 t ADT: 1,294
US0190
FairOver: BARNES CREEK
5.5 MI. E OF US171, Beauregard, LA
Built 1990 Load: 43.5 t ADT: 3,263
US0190
FairOver: BARNES CREEK RELIEF
6.2 MI. E OF US171, Beauregard, LA
Built 1990 Load: 43.5 t ADT: 3,263
US0171
FairOver: HICKORY BRANCH
.9 MI. N OF INT US190, Beauregard, LA
Built 1975 Load: 43.5 t ADT: 36,105
US0190
FairOver: SWAMP
1.90 MI. W OF LA389, Beauregard, LA
Built 1971 Load: 43.5 t ADT: 3,126
US0190
FairOver: SWAMP
0.70 MI. W OF LA389, Beauregard, LA
Built 1971 Load: 43.5 t ADT: 3,126
US0190
FairOver: BRIDGE CREEK
1.4 MI N of LA 110, Beauregard, LA
Built 1967 Load: 43.5 t ADT: 4,201
US0190
FairOver: TROUT CREEK
2.2 MI N of LA 110, Beauregard, LA
Built 1967 Load: 43.5 t ADT: 4,190
US0080
FairOver: BLACK LAKE CREEK
4.67 MI E. OF LA 154, Bienville, LA
Built 1995 Load: 43.5 t ADT: 2,140
US0080
FairOver: SALINE BAYOU RELIEF
1.02 MI. E. OF JUNC. LA 9, Bienville, LA
Built 1995 Load: 43.5 t ADT: 2,378
US0080
FairOver: SALINE BAYOU
1.62 MI. E. OF JUNC. LA 9, Bienville, LA
Built 1995 Load: 43.5 t ADT: 2,378
LA0154
FairOver: BLACK LAKE CREEK
.64 MI NORTH OF US 80, Bienville, LA
Built 1971 Load: 43.5 t ADT: 1,489
I0020
FairOver: BEAR CR RELIEF
.32 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 43.5 t ADT: 37,514
LA0154
FairOver: LAKE BISTINEAU
4.3 MI EAST OF LA 157, Bossier, LA
Built 2003 Load: 43.5 t ADT: 1,559
I0020
FairOver: FLAT RIVER
2.1 MI EAST OF LA 782-2, Bossier, LA
Built 1973 Load: 43.5 t ADT: 59,076
LA0175
FairOver: WALLACE BAYOU
4.06 MI SOUTH OF LA 1, Caddo, LA
Built 1982 Load: 43.5 t ADT: 1,400
LA0001
FairOver: MCAIN CREEK
2.42M NW OF LA1/US71 INTR, Caddo, LA
Built 1993 Load: 43.5 t ADT: 21,933
LA0001
FairOver: TIGER BRANCH
0.1M SOUTH OF LA 538, Caddo, LA
Built 1993 Load: 43.5 t ADT: 2,007
LA0001
FairOver: BLACK BAYOU
5.49M NORTH OF LA 170, Caddo, LA
Built 1993 Load: 43.5 t ADT: 2,032
LA0169
FairOver: PAW PAW BAYOU
5.29 MI NORTH OF I-20, Caddo, LA
Built 1999 Load: 43.5 t ADT: 1,298
LA0001
FairOver: DRAIN
2.15 MI NORTH OF LA 523, Caddo, LA
Built 1968 Load: 43.5 t ADT: 16,911
LA0538
FairOver: MCCAIN CREEK
2.09 MI NORTH OF US 71, Caddo, LA
Built 1980 Load: 43.5 t ADT: 1,568
I0020
FairOver: DRAIN
2.7 MI WEST OF LA 169, Caddo, LA
Built 1964 Load: 43.5 t ADT: 98,318
I0020
FairOver: DRAIN
2.7 MI WEST OF LA 169, Caddo, LA
Built 1964 Load: 43.5 t ADT: 98,318
US0171
FairOver: ENGLISH BAYOU
1.82 MI NORTH OF I-10, Calcasieu, LA
Built 1969 Load: 43.5 t ADT: 32,659
US0171
FairOver: ENGLISH BAYOU
0.4 MI S of LA 3059, Calcasieu, LA
Built 1969 Load: 43.5 t ADT: 18,040
I0010
FairOver: WING GULLY
5.5 MI EAST OF LA 108, Calcasieu, LA
Built 1965 Load: 43.5 t ADT: 86,969
I0010
FairOver: WING GULLY
7.3 MI W OF LA 27, Calcasieu, LA
Built 1965 Load: 43.5 t ADT: 3,799
Showing 6,001-6,050 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 |