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
LA0034
FairOver: CREEK
5.48 MI EAST OF LA 546, Ouachita, LA
Built 1967 Load: 30.1 t ADT: 15,742
MONROE RD
FairOver: LITTLE COLEWA BAYOU
3.2 MI N of LA 854, Richland, LA
Built 2003 Load: 30.1 t ADT: 100
LA0742
FairOver: BAYOU TOULOUSE
4.42 MI WEST OF LA 31, St. Landry, LA
Built 1974 Load: 30.1 t ADT: 1,741
W. Bellevue St.
FairOver: BAYOU TESSON
0.1 Mi E of S Liberty St., St. Landry, LA
Built 1965 Load: 30.1 t ADT: 1,500
Dumesnil Rd
FairOver: VACHERIE CANAL
0.52 Mi N of La 83, St. Mary, LA
Built 1972 Load: 30.1 t ADT: 50
Kingspoint Blvd.
FairOver: CANAL
1.4 MI EAST OF I10, St. Tammany, LA
Built 1977 Load: 30.1 t ADT: 2,000
Old River Rd
FairOver: BR. OVER DOUBLOUN BRANCH
N. 190 ON OLD RIVER RD, St. Tammany, LA
Built 1987 Load: 30.1 t ADT: 3,391
Fish Hatchery Rd
FairOver: CREEK
0.65 N.OF LA.1093-1, St. Tammany, LA
Built 1960 Load: 30.1 t ADT: 280
I0055
FairOver: TERRYS CREEK
2 Miles North of LA 38, Tangipahoa, LA
Built 1966 Load: 30.1 t ADT: 21,762
I0055
FairOver: TERRYS CREEK
2.5 Mi S. of State Line, Tangipahoa, LA
Built 1966 Load: 30.1 t ADT: 17,665
Junius Rd
FairOver: BATON COULEE
1.3 MILES W. OF LA.695, Vermilion, LA
Built 2014 Load: 30.1 t ADT: 100
LA0017
FairOver: COLEMAN BAYOU
4.2 MI NORTH OF LA 2, West Carroll, LA
Built 1924 Load: 30.1 t ADT: 3,570
LA0421
FairOver: MILL CREEK TRIB
LA0421, West Feliciana, LA
Built 1973 Load: 30.1 t ADT: 739
US0167
FairOver: DUGDEMONA RIVER
1.69 MI. SOUTH OF LA 505, Winn, LA
Built 2010 Load: 30.1 t ADT: 5,367
E. CEDAR ST.
FairOver: DRAINAGE DITCH
0.5 MI. E. OF LA 13, Acadia, LA
Built 1983 Load: 30.5 t ADT: 864
Luke Martin Rd
FairOver: BAYOU DULAC
APPROX. 5 M. N. OF US 71, Avoyelles, LA
Built 1984 Load: 30.5 t ADT: 460
LA0389
FairOver: CREEK
10.8 MI NORTH LA 109, Beauregard, LA
Built 2005 Load: 30.5 t ADT: 442
LA0169
FairOver: COTTONWOOD CREEK
2.9 MI EAST OF LA 1, Caddo, LA
Built 2006 Load: 30.5 t ADT: 311
I0220
FairOver: RUSSELL ROAD
5.4 MI NORTH OF I-20, Caddo, LA
Built 1979 Load: 30.5 t ADT: 13,700
Jefferson Paige Rd
FairOver: BICKHAM BAYOU
1.8 MI W. OF U.S. 80, Caddo, LA
Built 1998 Load: 30.5 t ADT: 100
I0010
FairOver: KAYOUCHE COULEE
0.8 MI EAST OF US 171, Calcasieu, LA
Built 1964 Load: 30.5 t ADT: 71,509
LA0384
FairOver: DRAIN
3.1 MI N of LA1144, Cameron, LA
Built 2004 Load: 30.5 t ADT: 195
LA0129
FairOver: Ross Bayou
1.03 MI NORTH OF LA 565, Concordia, LA
Built 2000 Load: 30.5 t ADT: 1,684
GRETNA BLVD
FairOver: DRAINAGE CANAL
0.2 MI N OF LA 23, Jefferson, LA
Built 2004 Load: 30.5 t ADT: 2,500
LA0102
FairOver: DRAIN DITCH
0.7 MI E of LA 26, Jefferson Davis, LA
Built 2001 Load: 30.5 t ADT: 832
LA0102
FairOver: BAYOU
1.94 EAST OF LA 26, Jefferson Davis, LA
Built 2002 Load: 30.5 t ADT: 832
LA1096
FairOver: CREEK
0.40 MI WEST OF LA 95, Lafayette, LA
Built 1981 Load: 30.5 t ADT: 654
LA0016
FairOver: SPILLER CREEK
2.6 MI NO LA 1019 INTER., Livingston, LA
Built 1996 Load: 30.5 t ADT: 7,595
ALMONASTER AVE, RR
FairOver: FLORIDA AVE.
0.05 MI N OF N DORGENOIS, Orleans, LA
Built 1960 Load: 30.5 t
CENTURY LINK DR
FairOver: DESIARD BAYOU
AT LA FISH HATCHERY, Ouachita, LA
Built 1975 Load: 30.5 t ADT: 265
LA0121
FairOver: BAYOU RAPIDES
4.02 MI. NORTH OF LA 28, Rapides, LA
Built 2006 Load: 30.5 t ADT: 1,662
PARISH LINE ROAD
FairOver: SERPENT BAYOU
1.1 MI W of LA 99, Jefferson Davis, LA
Built 2013 Load: 30.7 t ADT: 60
LEE GATES RD
FairOver: LAPINE BAYOU
0.75 MILES SOUTH OF LA 34, Ouachita, LA
Built 2011 Load: 30.7 t ADT: 57
LA1115
FairOver: LYONS POINT GULLY
2.62 MI EAST OF LA 91, Acadia, LA
Built 1962 Load: 30.8 t ADT: 377
LA0042
FairOver: BAYOU VILLAR
0.09 M SE of LA 42&LA 431, Ascension, LA
Built 1984 Load: 30.8 t ADT: 13,122
LA0109
FairOver: INDIAN CREEK
3.0 MI. S OF INT LA389, Beauregard, LA
Built 1962 Load: 30.8 t ADT: 1,749
I0020
FairOver: RED RIVER
.01 MI EAST LA 1, Bossier, LA
Built 1965 Load: 30.8 t ADT: 69,892
I0020
FairOver: HAMILTON MILLS ROAD
.80 MI EAST LA 1, Bossier, LA
Built 1966 Load: 30.8 t ADT: 69,892
I0020
FairOver: HAMILTON MILLS ROAD
.80 MI EAST LA 1, Bossier, LA
Built 1966 Load: 30.8 t ADT: 71,593
I0020
FairOver: ICG RR
.5 MI EAST OVER LA 72, Bossier, LA
Built 1967 Load: 30.8 t ADT: 69,892
I0020
FairOver: RED CHUTE BAYOU
3.3 MI EAST OF LA 782-2, Bossier, LA
Built 1973 Load: 30.8 t ADT: 62,470
I0020
FairOver: MARION ST
.2 MI EAST OF US 80, Caddo, LA
Built 1965 Load: 30.8 t ADT: 98,318
CLYDE FANT PKWY SB
FairOver: PRESTON AVE
0.75 MI SOUTH OF LA 3032, Caddo, LA
Built 1987 Load: 30.8 t ADT: 11,190
LINEAR STREET
FairOver: COOPER ROAD DITCH
1.2 MI EAST OF LA 173, Caddo, LA
Built 1987 Load: 30.8 t ADT: 600
LA0108
FairOver: COON GULLY
.65 MI SOUTH OF I-10, Calcasieu, LA
Built 2006 Load: 30.8 t ADT: 762
I0210
FairOver: HOLLYHILL RD
.5 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1964 Load: 30.8 t ADT: 65,748
I0010
FairOver: OPELOUSAS ST
0.7 MI EAST OF US 90, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 71,437
I0010
FairOver: OPELOUSAS ST
0.6 MI W of US 171, Calcasieu, LA
Built 1961 Load: 30.8 t ADT: 11,437
FORD ST
FairOver: FARMERS L & C CO. CANAL
0.03 MI N of 8TH ST, Calcasieu, LA
Built 1928 Load: 30.8 t ADT: 112
MOSS ST
FairOver: FARMERS L & C CO. CANAL
0.006 MI N of 8TH ST, Calcasieu, LA
Built 1960 Load: 30.8 t ADT: 294
Showing 3,501-3,550 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 |