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
LA0550
FairOver: CORNEY BAYOU
4.8 MI NORTH OF LA 2, Union, LA
Built 1982 Load: 43.5 t ADT: 464
LA0552
FairOver: PIPE CREEK
11.4 MI EAST OF LA 15, Union, LA
Built 1990 Load: 43.5 t ADT: 743
LA0014
FairOver: COULEE KENNY
1.6 MI E. OF LA 343, Vermilion, LA
Built 1963 Load: 43.5 t ADT: 2,533
LA0035
FairOver: BAYOU GRAND MARAIS
0.3 MI N. OF LA 699, Vermilion, LA
Built 1976 Load: 43.5 t ADT: 1,034
US0171
FairOver: CASTOR CREEK RELIEF
5.1 MI NORTH OF LA 10, Vernon, LA
Built 1975 Load: 43.5 t ADT: 12,466
US0171
FairOver: CASTOR CREEK RELIEF
5.1 MI NORTH OF LA 10, Vernon, LA
Built 1975 Load: 43.5 t ADT: 6,952
US0171
FairOver: SALES BRANCH
.25 MI NORTH OF LA 1211, Vernon, LA
Built 1975 Load: 43.5 t ADT: 14,458
LA0111
FairOver: ANACOCO CREEK RELIEF
2.92 MI. EAST OF LA 392, Vernon, LA
Built 1966 Load: 43.5 t ADT: 937
LA0111
FairOver: ANACOCO CREEK
3.09 MI EAST OF LA 392, Vernon, LA
Built 1966 Load: 43.5 t ADT: 937
LA0021
FairOver: PETERS CREEK
LA0021, Washington, LA
Built 1965 Load: 43.5 t ADT: 6,741
LA0021
FairOver: NORTH BRANCH
LA0021, Washington, LA
Built 1965 Load: 43.5 t ADT: 6,741
LA0021
FairOver: DRAIN
0.2 M N OF LA 436, Washington, LA
Built 1965 Load: 43.5 t ADT: 5,485
LA0076
FairOver: STUMPY BAYOU
0.2 M E of LA 413, West Baton Rouge, LA
Built 1971 Load: 43.5 t ADT: 7,562
OLD SPANISH TRAIL
FairOver: FARMERS L&C CO. CANAL
0.3 MI E of LA 27, Calcasieu, LA
Built 2010 Load: 43.7 t ADT: 7,583
LA0660
FairOver: DRAIN CANAL
1.0 MI. WEST OF LA 3087, Terrebonne, LA
Built 2010 Load: 43.7 t ADT: 10,321
LA0012
FairOver: CURRENT SLOUGH
4.1 MI W OF LA 109, Calcasieu, LA
Built 2022 Load: 44.1 t ADT: 4,600
WEST DIVISION ST
FairOver: PETITE MARAIS
1.24 MI W OF LA 26, Jefferson Davis, LA
Built 2019 Load: 44.1 t ADT: 1,200
LA0450
FairOver: CATCA CREEK
5.5 MILES NO OF LA 25, Washington, LA
Built 1998 Load: 44.1 t ADT: 1,822
Muskrat Rd.
FairOver: Lyons Point Gully
0.3 Mi. S. of La 92, Acadia, LA
Built 1994 Load: 44.4 t ADT: 672
Goodrich Rd
FairOver: ANDRE COULEE
0.6 Mi. W. of La 1120, Acadia, LA
Built 1993 Load: 44.4 t ADT: 288
Grace's Crossing
FairOver: DRAINAGE DITCH
0.01 MI. EAST OF LA 1181, Avoyelles, LA
Built 1976 Load: 44.4 t ADT: 50
PROVIDENCE ROAD
FairOver: TRIBUTARY TO BOGGY BAYOU
3.0 MI S OF LA 169, Caddo, LA
Built 2019 Load: 44.4 t ADT: 100
LINWOOD AVE.
FairOver: BOGGY BAYOU RELIEF
3.1 MI S OF LA 526, Caddo, LA
Built 2018 Load: 44.4 t ADT: 260
Gracie Ln
FairOver: LEVEE BARROW PIT
0.9 MI NW OF LA 75, Iberville, LA
Built 2017 Load: 44.4 t ADT: 681
W Esplanade Ave S
FairOver: CANAL #17
0.1 MI.W. OF TULANE DRIVE, Jefferson, LA
Built 1984 Load: 44.4 t
LA0014
FairOver: BAYOU LACASSINE
3.5 MI W of LA 99, Jefferson Davis, LA
Built 2013 Load: 44.4 t ADT: 1,108
MIRABEAU AVE
FairOver: LONDON AVE. CANAL
0.04 MI E OF PRATT DR, Orleans, LA
Built 2003 Load: 44.4 t
MAGAZINE ACCESS RD
FairOver: CANAL
10 M S OF MAGAZINE RD, Plaquemines, LA
Built 1989 Load: 44.4 t ADT: 30
US0065
FairOver: CLARK BAYOU
2.2 MI NORTH OF LA 605, Tensas, LA
Built 1953 Load: 44.4 t ADT: 1,873
I0010
FairOver: AKDNRR & FRANKEL FARM RD
3.4 MI EAST LA 91, Acadia, LA
Built 1961 Load: 44.5 t ADT: 58,865
I0010
FairOver: AKDNRR & FRANKEL FARM RD
1.22 MI W of LA 13, Acadia, LA
Built 1961 Load: 44.5 t ADT: 1,471
I0010
FairOver: BAYOU PLAQUEMINE
3.9 MI EAST LA 91, Acadia, LA
Built 1961 Load: 44.5 t ADT: 58,865
I0010
FairOver: BAYOU PLAQUEMINE
.71 Mi W of LA 13, Acadia, LA
Built 1961 Load: 44.5 t ADT: 1,471
I0020
FairOver: FLAT RIVER
0.5 MILES WEST OF I-220, Bossier, LA
Built 1973 Load: 44.5 t ADT: 59,076
US0171
FairOver: BOGGY BAYOU
2.6 MI. S. OF LA 526, Caddo, LA
Built 1953 Load: 44.5 t ADT: 16,911
LA0173
FairOver: SODA LAKE CANAL
1.94 M E OF JCT OF LA 1, Caddo, LA
Built 2000 Load: 44.5 t ADT: 713
US0171
FairOver: SO. PAC RR
.1 MI NORTH OF US 90, Calcasieu, LA
Built 1994 Load: 44.5 t ADT: 19,234
SIEGEN LN
FairOver: CLAY CUT BAYOU
2.2 MI SE I-12, US 61 JCT, East Baton Rouge, LA
Built 1984 Load: 44.5 t ADT: 38,982
US0090
FairOver: RODERE CANAL
1.7 Mi W of LA 83, Iberia, LA
Built 1969 Load: 44.5 t ADT: 10,090
LA0099
FairOver: EAST BAYOU LACASSINE BR.
.6 MI NORTH OF I-10, Jefferson Davis, LA
Built 2004 Load: 44.5 t ADT: 1,405
LA0099
FairOver: BR OVER BAYOU OFF B LAC.
0.9 MI N OF I-10, Jefferson Davis, LA
Built 2003 Load: 44.5 t ADT: 1,405
LA0653
FairOver: DRAINAGE CANAL
4.25 MI EAST OF LA 182, Lafourche, LA
Built 2000 Load: 44.5 t ADT: 124
I0012
FairOver: WEST COLYELL CR
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 77,469
I0012
FairOver: DUMPLIN CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 77,469
I0012
FairOver: MIDDLE COLYELL CREEK
I0012, Livingston, LA
Built 1970 Load: 44.5 t ADT: 77,469
I0012
FairOver: HORNSBY CREEK
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 78,208
I0012
FairOver: COLYELL CREEK
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 37,161
I0012
FairOver: BIG BRANCH
I0012, Livingston, LA
Built 1969 Load: 44.5 t ADT: 75,867
I0012
FairOver: BLOOD RIVER
I0012, Livingston, LA
Built 1968 Load: 44.5 t ADT: 74,180
I0020
FairOver: BENNETT BAYOU
5.0 MI EAST OF US 165, Ouachita, LA
Built 1968 Load: 44.5 t ADT: 43,420
Showing 6,151-6,200 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 |