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
US0171
GoodOver: PRAIRIE CREEK SOUTH RDWY
1.59 M. N. OF N. JCT. LA, Vernon, LA
Built 1986 Load: 40.8 t ADT: 6,952
LA0111
GoodOver: ANACOCO CREEK
1.75 MI E. JCT. US 171, Vernon, LA
Built 1997 Load: 40.8 t ADT: 937
LA0111
GoodOver: UNNAMED CREEK
4.88 MI. E. JCT. US 171, Vernon, LA
Built 1997 Load: 40.8 t ADT: 937
LA0111
GoodOver: PRAIRIE CREEK
5.79 MI E. JCT. US 171, Vernon, LA
Built 1997 Load: 40.8 t ADT: 937
LA0111
GoodOver: PRAIRIE CREEK
5.86 MI. E. JCT. US 171, Vernon, LA
Built 1997 Load: 40.8 t ADT: 937
LA0111
GoodOver: DRY CREEK
6.74 MI. E. JCT. US 171, Vernon, LA
Built 1997 Load: 40.8 t ADT: 937
LA0113
GoodOver: STEEP GULLY BRANCH
3.1 MI EAST OF LA 10, Vernon, LA
Built 1984 Load: 40.8 t ADT: 822
LA0113
GoodOver: STEEP GULLY
3.2 MI EAST OF LA 10, Vernon, LA
Built 1984 Load: 40.8 t ADT: 822
LA1146
GoodOver: CLEAR CREEK
1.8M EAST US 171, Vernon, LA
Built 1993 Load: 40.8 t ADT: 918
LA1146
GoodOver: HURRICANE CREEK
2.5M EAST US 171, Vernon, LA
Built 1993 Load: 40.8 t ADT: 918
LA1146
GoodOver: BUNDICK CREEK
4.1M EAST OF US 171, Vernon, LA
Built 1993 Load: 40.8 t ADT: 918
LA0438
GoodOver: EAST FORK PUSHAPATAPA
0.4 M E OF LA 62, Washington, LA
Built 1981 Load: 40.8 t ADT: 925
LA0793
GoodOver: MUD BRANCH
2.3 MI WEST OF LA 794, Webster, LA
Built 1986 Load: 40.8 t ADT: 125
LA0582
GoodOver: LYON BAYOU
0.4 MI E of LA 17, West Carroll, LA
Built 1983 Load: 40.8 t ADT: 384
LA0587
GoodOver: BAYOU
.8 MI WEST OF LA 878, West Carroll, LA
Built 1985 Load: 40.8 t ADT: 565
LA0587
GoodOver: DRAIN
.3 MI EAST OF LA 878, West Carroll, LA
Built 1985 Load: 40.8 t ADT: 565
LA0587
GoodOver: DRAIN
.9 MI EAST OF LA 878, West Carroll, LA
Built 1985 Load: 40.8 t ADT: 565
LA0066
GoodOver: PANTHA CREEK
5.0 MILES S.W. OF JCT. LA, West Feliciana, LA
Built 2011 Load: 40.8 t ADT: 1,417
LA0126
GoodOver: DUGDEMONA RIVER RELIEF
1.4 MI E. OF JCT. LA 501, Winn, LA
Built 1986 Load: 40.8 t ADT: 527
LA0126
GoodOver: DUGDEMONA RIVER RELIEF
1.65 MI E OF JCT. LA 501, Winn, LA
Built 1986 Load: 40.8 t ADT: 527
LA0126
GoodOver: DUGDEMONA RIVER RELIEF
1.94 MI E OF JCT LA 501, Winn, LA
Built 1986 Load: 40.8 t ADT: 527
LA0126
GoodOver: DUGDEMONA RIVER
2.07 MI E OF JCT. LA 501, Winn, LA
Built 1986 Load: 40.8 t ADT: 527
LA0126
GoodOver: DUGDEMONA RIVER RELIEF
2.28 MI EAST JCT LA 501, Winn, LA
Built 1986 Load: 40.8 t ADT: 527
LA0126
GoodOver: KIESCHE CREEK
4.11 MI EAST OF US 167, Winn, LA
Built 1996 Load: 40.8 t ADT: 572
LA0126
GoodOver: WALNUT CREEK
.8 MI EAST OF LA 34, Winn, LA
Built 1996 Load: 40.8 t ADT: 572
LA0126
GoodOver: CANEY CREEK
.05 MI EAST OF LA 1232, Winn, LA
Built 1985 Load: 40.8 t ADT: 646
LA0126
GoodOver: TURKEY CREEK
2.72 MILES EAST OF LA 127, Winn, LA
Built 1985 Load: 40.8 t ADT: 426
LA0126
GoodOver: DRY CREEK
0.92 MILE EAST OF LA 127, Winn, LA
Built 1985 Load: 40.8 t ADT: 426
LA0126
GoodOver: FISH CREEK
5.72 MILES EAST OF LA 127, Winn, LA
Built 1985 Load: 40.8 t ADT: 349
LA0126
GoodOver: BEAUCOUP CREEK
9.44 MILES EAST OF LA 127, Winn, LA
Built 1985 Load: 40.8 t ADT: 349
LA0126
GoodOver: DRAINAGE CREEK
9.7 MILES EAST OF LA 127, Winn, LA
Built 1985 Load: 40.8 t ADT: 349
LA0501
GoodOver: MILE BRANCH
8.76 MI. NORTH OF LA 156, Winn, LA
Built 1982 Load: 40.8 t ADT: 120
LA0501
GoodOver: CYPRESS CREEK
11.45 MI. NORTH OF LA 156, Winn, LA
Built 1982 Load: 40.8 t ADT: 120
LA0034
GoodOver: MILLER BRANCH
2.63 MI. NORTH OF LA 499, Winn, LA
Built 1983 Load: 40.8 t ADT: 1,420
LA0034
GoodOver: DRAINAGE CANAL
3.77 MI. NORTH OF LA 499, Winn, LA
Built 1983 Load: 40.8 t ADT: 1,420
LA0034
GoodOver: DRAINAGE CANAL
4.86 MI. NORTH OF LA 499, Winn, LA
Built 1983 Load: 40.8 t ADT: 1,420
LA0034
GoodOver: DRAINAGE CANAL
5.03 MI. NORTH OF LA 499, Winn, LA
Built 1983 Load: 40.8 t ADT: 1,420
LA0034
GoodOver: WALNUT CREEK
6.96 MI. NORTH OF LA 499, Winn, LA
Built 1983 Load: 40.8 t ADT: 1,420
I0010
GoodOver: DRAINAGE CANAL
1.0 M SE of I-10&LA 44, Ascension, LA
Built 1979 Load: 41.1 t ADT: 57,444
Golden Meadows
GoodOver: MACKS BAYOU
1.2 MI E OF HWY 71, Bossier, LA
Built 1979 Load: 41.1 t ADT: 30
LA0169
GoodOver: SODA LAKE CANAL
3.3 MI. E. OF LA 1, Caddo, LA
Built 2013 Load: 41.1 t ADT: 311
CHOUPIQUE RD
GoodOver: GOVERNMENT DITCH
3.0 MI S OF LA 108, Calcasieu, LA
Built 2014 Load: 41.1 t ADT: 162
I0110
GoodOver: EVANGELINE ON RAMP (N.B.
I0110, East Baton Rouge, LA
Built 1971 Load: 41.1 t ADT: 8,250
W Lee Dr
GoodOver: BAYOU FOUNTAIN
.01 MI SOUTH/HIGHLAND, East Baton Rouge, LA
Built 1985 Load: 41.1 t ADT: 24,832
Dover Rd.
GoodOver: DRAINAGE
0.24 MI N OF LA 3073, Lafayette, LA
Built 1974 Load: 41.1 t ADT: 700
Mixon Rd
GoodOver: TARVER CREEK
LOG MI 3.47 FR 612 TO 618, LaSalle, LA
Built 1999 Load: 41.1 t ADT: 100
HENRY AVE
GoodOver: STAULKINGHEAD CREEK
0.4 MI E of LA 2, Morehouse, LA
Built 2004 Load: 41.1 t ADT: 600
MILTON WHITE RD
GoodOver: DRAIN TO CYPRESS BAYOU
0.3 MI W of US 425, Morehouse, LA
Built 2005 Load: 41.1 t ADT: 450
COX LN
GoodOver: BAYOU SANTABARB TRIB.
0.65 MILE SOUTH OF LA 478, Natchitoches, LA
Built 1996 Load: 41.1 t ADT: 300
Little River Rd
GoodOver: LITTLE RIVER
0.01 MILES WEST OF LA 491, Natchitoches, LA
Built 2000 Load: 41.1 t ADT: 102
Showing 10,151-10,200 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 |