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
MARTIN TRAM RD
FairOver: BUNCHS CREEK
2.4 MI S OF US 190, Allen, LA
Built 2000 Load: 39.5 t ADT: 414
Airline Dr
FairOver: Willow Chute Bayou
2.7 MI NORTH OF LA 3105, Bossier, LA
Built 1993 Load: 39.5 t ADT: 19,000
Perkins RD
FairOver: BEAVER CREEK
3.4 MI NORTH FELIXVILLE, East Feliciana, LA
Built 1986 Load: 39.5 t ADT: 24
CYPRESS SCHOOL RD
FairOver: CYPRESS CREEK
2 MI W LUNA, Ouachita, LA
Built 1984 Load: 39.5 t ADT: 235
DOWNING PINES RD
FairOver: CONSTITUTION DRIVE
0.08 MI S of I-20, Ouachita, LA
Built 2000 Load: 39.5 t
E. Domiano Rd
FairOver: PONCHATOULA CREEK
1 MI. EAST OF LA 1065, Tangipahoa, LA
Built 1992 Load: 39.5 t ADT: 164
Danna Rd
FairOver: PONCHATOULA CREEK
.9MI.S.1063ONALESS.RD.NEW, Tangipahoa, LA
Built 1998 Load: 39.5 t ADT: 545
E. Evans Rd
FairOver: NATALBANY RIVER
0.7 MI WEST OF LA 1063, Tangipahoa, LA
Built 1992 Load: 39.5 t ADT: 254
Beluah
FairOver: BEULAH CREEK
3.07 MI. NROTH OF LA 1230, Winn, LA
Built 2004 Load: 39.5 t ADT: 291
US0165
FairOver: KINDER DITCH
2.4 MI SOUTH OF LA 383, Allen, LA
Built 2008 Load: 39.9 t ADT: 11,447
POWELL RD
FairOver: BLUE BAYOU DIVERSION
4.3 MI S of LA 26, Allen, LA
Built 2009 Load: 39.9 t ADT: 446
OLD PUMP RD
FairOver: CALCASIEU RIVER RELIEF
0.7 MI W OF CHAPPEL RD, Allen, LA
Built 2009 Load: 39.9 t ADT: 584
OLD PUMP RD
FairOver: CALCASIEU RIVER RELIEF
0.9 MI. W. OF CHAPPEL RD, Allen, LA
Built 2009 Load: 39.9 t ADT: 581
US0190
FairOver: CALCASIEU RIVER
8.62 MI. E OF INT LA 113, Allen, LA
Built 1980 Load: 39.9 t ADT: 3,923
LA0070
FairOver: BAYOU VERRETTE
0.2 M E of LA 70&LA 3120, Ascension, LA
Built 1972 Load: 39.9 t ADT: 15,051
LA1146
FairOver: BUNDICK CREEK
.85 MI. N OF INT LA112, Beauregard, LA
Built 1980 Load: 39.9 t ADT: 918
KING RD
FairOver: SMITH BRANCH CR
0.5 MI E OF LA 113, Beauregard, LA
Built 2007 Load: 39.9 t ADT: 245
MAUL RD
FairOver: CR BRIDGE CREEK
1.5 MILES WEST OF LA 27, Beauregard, LA
Built 2007 Load: 39.9 t ADT: 80
SMYRNA RD
FairOver: SANDY CREEK
3.0 MI. N. OF LA 26, Beauregard, LA
Built 2006 Load: 39.9 t ADT: 140
LA0516
FairOver: DAVIS CREEK
1.4 MI EAST OF US 371, Bienville, LA
Built 1961 Load: 39.9 t ADT: 177
I0020
FairOver: BEAR CR RELIEF
.32 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
I0020
FairOver: BEAR CREEK
.54 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
I0020
FairOver: CANEY CREEK
3.5 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
I0020
FairOver: CANEY CREEK
3.5 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
I0020
FairOver: DRAIN
3.9 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
I0020
FairOver: DRAIN
3.9 MI EAST OF US 80, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
I0020
FairOver: BLACK LAKE CREEK
1.31 M WEST OF JCT OF LA9, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
I0020
FairOver: BLACK LAKE CREEK
1.31 M WEST OF JCT OF LA9, Bienville, LA
Built 1964 Load: 39.9 t ADT: 37,514
LA0162
FairOver: CYPRESS BAYOU
3.26 MI EAST OF LA 3, Bossier, LA
Built 1973 Load: 39.9 t ADT: 4,595
LA0160
FairOver: CROSSWAY SLOUGH
4.49 MI EAST OF LA 157W, Bossier, LA
Built 1957 Load: 39.9 t ADT: 421
US0171
FairOver: BUCHANAN BAYOU
5.2 MI. N. OF LA 3276, Caddo, LA
Built 1967 Load: 39.9 t ADT: 8,575
US0171
FairOver: BOGGY BAYOU
6.1 MI. N. OF LA 3276, Caddo, LA
Built 1967 Load: 39.9 t ADT: 8,575
LA0169
FairOver: BOGGY BAYOU
6.71 MI S OF US 78-80, Caddo, LA
Built 1999 Load: 39.9 t ADT: 1,540
I0049
FairOver: St. Vincent Ave
0.2 M. South of Kings Hwy, Caddo, LA
Built 1994 Load: 39.9 t ADT: 87,567
Fant Parkway SB
FairOver: BYCYCLE TRAIL
0.5 MI. NO. OF LA 30, Caddo, LA
Built 1974 Load: 39.9 t ADT: 7,678
LA0027
FairOver: CREEK
0.7 MI S OF LA 12, Calcasieu, LA
Built 1988 Load: 39.9 t ADT: 8,536
I0210
FairOver: TEXAS STREET
1.3 MI E OF LA 385, Calcasieu, LA
Built 1976 Load: 39.9 t ADT: 30,723
I0210
FairOver: TEXAS STREET
1.1 MI. W. OF LA 14, Calcasieu, LA
Built 1976 Load: 39.9 t ADT: 30,723
I0210
FairOver: 5TH AVENUE
1.77 MI EAST OF LA 385, Calcasieu, LA
Built 1976 Load: 39.9 t ADT: 61,445
I0210
FairOver: 5TH AVENUE
1.77 MI EAST OF LA 385, Calcasieu, LA
Built 1976 Load: 39.9 t ADT: 608
JOE COURVILLE RD.
FairOver: HAMPTON COULEE
0.2 MI W OF LA 108, Calcasieu, LA
Built 1981 Load: 39.9 t ADT: 162
LA0397
FairOver: BAYOU
2.6 Mi. S. OF LA 14, Calcasieu, LA
Built 1992 Load: 39.9 t ADT: 543
LA0027
FairOver: BAYOU DINDE
0.2 MI N of I-10, Calcasieu, LA
Built 1987 Load: 39.9 t ADT: 19,872
LA0717
FairOver: KLONDIKE CANAL
1.4 MI. W OF LA 14, Cameron, LA
Built 1960 Load: 39.9 t ADT: 511
US0079
FairOver: CROWS CREEK
6.8 MI SOUTH OF LA 9, Claiborne, LA
Built 1979 Load: 39.9 t ADT: 9,942
US0079
FairOver: DRAINAGE CREEK
7.4 SOUTH OF LA 9, Claiborne, LA
Built 1979 Load: 39.9 t ADT: 9,942
US0079
FairOver: BAYOU D'ARBONNE
1.16 MI NORTH OF LA 9, Claiborne, LA
Built 1979 Load: 39.9 t ADT: 5,728
LA0009
FairOver: BAYOU DARBONNE
1.35 MI EAST OF US 79, Claiborne, LA
Built 1978 Load: 39.9 t ADT: 2,567
US0171
FairOver: COOK CREEK
7.2 MI. S. OF LA 5, De Soto, LA
Built 1978 Load: 39.9 t ADT: 6,604
I0049
FairOver: ROIS D'ARC BAYOU
2.71 M N OF LA 177 INTR, De Soto, LA
Built 1988 Load: 39.9 t ADT: 28,142
Showing 5,501-5,550 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 |