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
Pecue Ln
FairOver: DIVERSON CANAL
1.7 MI. NW JCT I-10 LA 42, East Baton Rouge, LA
Built 1995 Load: 34.0 t ADT: 5,385
US0061
FairOver: SANDY CREEK
US0061, East Feliciana, LA
Built 1961 Load: 34.0 t ADT: 2,531
US0167
FairOver: KCS & UNION PACIFIC RR
.2 MI NORTH OF LA 4, Jackson, LA
Built 2001 Load: 34.0 t ADT: 13,811
Sarah Dee Pkwy.
FairOver: COULEE
0.085 miles NE of Tolson, Lafayette, LA
Built 1978 Load: 34.0 t ADT: 280
FRAZIER RD
FairOver: COLVIN CREEK
1.0 MI. EAST OF US 167, Lincoln, LA
Built 2012 Load: 34.0 t ADT: 900
HARRISON AVE
FairOver: ORLEANS AVENUE CANAL
0.1 MI EAST OF ARGONNE B, Orleans, LA
Built 2001 Load: 34.0 t
Jacob Dr
FairOver: 20 Arpent Canal
0.4 Mi. N. of LA 39, St. Bernard, LA
Built 1997 Load: 34.0 t ADT: 863
US0090
FairOver: DRAINAGE CANAL NO 1
1.00 MI E OF LA 311, Terrebonne, LA
Built 1987 Load: 34.0 t ADT: 8,789
US0090
FairOver: DRAINAGE CANAL NO 1
1.0 MI E OF LA 311, Terrebonne, LA
Built 1987 Load: 34.0 t ADT: 11,661
LA1072
FairOver: DRAIN
2.62M EAST OF LA 16, Washington, LA
Built 1992 Load: 34.0 t ADT: 1,105
Burma Rd
FairOver: BOONE CREEK
3.0 MI SE OF US 80, Webster, LA
Built 1991 Load: 34.0 t ADT: 30
Old Tunica Rd
FairOver: TUNICA BAYOU
0.2 Mi. S. of LA 66, West Feliciana, LA
Built 1999 Load: 34.0 t ADT: 200
LA0389
FairOver: BRUSHY CREEK
12.8 MI NORTH LA 109, Beauregard, LA
Built 2005 Load: 34.3 t ADT: 442
LA0394
FairOver: MILL BAYOU CREEK
0.4 MI W of LA 113, Beauregard, LA
Built 1998 Load: 34.3 t ADT: 490
Yearwood Rd
FairOver: PHILLIPS BAYOU
3.5 MI. SE OF CASPIANA, Caddo, LA
Built 1998 Load: 34.3 t ADT: 23
LA0389
FairOver: BUXTON CREEK
0.5 MI N OF LA 12, Calcasieu, LA
Built 2003 Load: 34.3 t ADT: 1,874
Nash Rd
FairOver: CASTOR BAYOU NASH RD. 14
6.6 MI NO OF US 84, De Soto, LA
Built 1984 Load: 34.3 t ADT: 40
State Line Rd
FairOver: GARRISON CREEK
1.47 MI W OF LA 764, De Soto, LA
Built 1984 Load: 34.3 t ADT: 185
Woodsprings Rd
FairOver: CASTOR BAYOU
2.68 MI E OF LA 5, De Soto, LA
Built 1984 Load: 34.3 t ADT: 40
Holmes Rd
FairOver: LITTLE CREEK
0.5 MI. WEST OF LA 169, De Soto, LA
Built 1984 Load: 34.3 t ADT: 55
LA0034
FairOver: NANTACHIE CREEK
1.60 MI E OF JCT. US 71, Grant, LA
Built 2000 Load: 34.3 t ADT: 482
LA0102
FairOver: BAYOU
0.3 MI. E. OF LA 395, Jefferson Davis, LA
Built 2009 Load: 34.3 t ADT: 3,728
LA0723
FairOver: Coulee Mine
3.51 MI WEST OF LA 93, Lafayette, LA
Built 2003 Load: 34.3 t ADT: 602
General de Gaulle
FairOver: DRAIN CANAL
1.2 MI SOUTHEAST OF US 90, Orleans, LA
Built 1975 Load: 34.3 t
MELDER RD
FairOver: GERMANY CREEK
4.5 MI. SOUTH OF LA 112, Rapides, LA
Built 1992 Load: 34.3 t ADT: 380
Melder Rd
FairOver: CAMPGROUND CREEK
3.5 MI. SOUTH OF LA 112, Rapides, LA
Built 1992 Load: 34.3 t ADT: 380
Melder Rd
FairOver: CAMPGROUND CREEK
3.93 MI SOUTH OF LA 112, Rapides, LA
Built 1986 Load: 34.3 t ADT: 230
THRYRA JOHNSON RD
FairOver: SAN MIGUEL BAYOU
THYRA JOHNSON ROAD, Sabine, LA
Built 1993 Load: 34.3 t ADT: 120
LA0033
FairOver: BAYOU DELOUTRE
7.1 MI N of LA 2/LA 15, Union, LA
Built 1997 Load: 34.3 t ADT: 1,697
US0190
FairOver: US 190 OVER TIGER BAYOU
10.55 M FROM EBR LINE, West Baton Rouge, LA
Built 2005 Load: 34.3 t ADT: 19,077
Woods Rd
FairOver: ALLIGATOR BAYOU
0.3 MI NW of LA 588, West Carroll, LA
Built 2010 Load: 34.3 t ADT: 176
I0010-W
FairOver: Plant Rd
7.30 Mi W of LA 13, Acadia, LA
Built 1961 Load: 34.5 t ADT: 1,471
LA0389
FairOver: WINDHAM CREEK
.16 MI. E OF INT LA109, Beauregard, LA
Built 1959 Load: 34.5 t ADT: 1,749
I0220
FairOver: ST.LOUIS-S.W.R.R.
2.51 MI EAST OF LA 3049, Bossier, LA
Built 1978 Load: 34.5 t ADT: 42,148
I0220
FairOver: FLAT RIVER
3.9 MI EAST OF LA 3105, Bossier, LA
Built 1978 Load: 34.5 t ADT: 25,004
US0071
FairOver: TWELVE MILE BAYOU
1.38 M NORTH OF LA 538, Caddo, LA
Built 1991 Load: 34.5 t ADT: 786
LA0538
FairOver: TWELVE MILE BAYOU
00.15 MI N. OF LA 3049, Caddo, LA
Built 2005 Load: 34.5 t ADT: 6,777
LA0173
FairOver: TWELVE MILE BAYOU
1.53 MI EAST OF LA 1, Caddo, LA
Built 1980 Load: 34.5 t ADT: 713
LA3132
FairOver: BAYOU PIERRE
0.2 MI. W. OF LA 526, Caddo, LA
Built 1977 Load: 34.5 t ADT: 23,520
I0049
FairOver: CYPRESS SLOUGH
3.6 M S OF LA 526 INTR, Caddo, LA
Built 1989 Load: 34.5 t ADT: 28,142
I0049
FairOver: ST. VINCENT AVENUE
2.58 M. NORTH OF LA 511, Caddo, LA
Built 1994 Load: 34.5 t ADT: 28,142
LA0526
FairOver: BRUSH BAYOU
1.0 MI EAST OF LA 3204, Caddo, LA
Built 1977 Load: 34.5 t ADT: 19,314
I0210
FairOver: M P RR/KAYOUCHE COULEE
1.03 MI EAST OF LA 14, Calcasieu, LA
Built 1976 Load: 34.5 t ADT: 55,407
I0210
FairOver: M P RR/KAYOUCHE COULEE
1.03 MI EAST OF LA 14, Calcasieu, LA
Built 1976 Load: 34.5 t ADT: 608
US0084
FairOver: FRENCH FORK
1.0 MI WEST OF LA 28, Catahoula, LA
Built 1968 Load: 34.5 t ADT: 2,293
US0171
FairOver: BEAR CREEK
0.5 MI. N. OF LA 512, De Soto, LA
Built 1977 Load: 34.5 t ADT: 5,659
I0049
FairOver: I-49 OVER RED BLUFF RD
2.2 MI N. OF LA 175 INTG, De Soto, LA
Built 1986 Load: 34.5 t ADT: 29,022
I0049
FairOver: I-49 OVER RED BLUFF RD
2.2 MI N OF LA 175 INTG, De Soto, LA
Built 1986 Load: 34.5 t ADT: 28,142
I0110
FairOver: WELLER OFF RAMP (S.B.)
I-110 / WELLER AVE. INTG., East Baton Rouge, LA
Built 1970 Load: 34.5 t ADT: 16,229
US0090
FairOver: LEWIS STREET
1.09 Mi E of LA 329, Iberia, LA
Built 2000 Load: 34.5 t ADT: 18,565
Showing 4,601-4,650 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 |