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
LA0612
FairOver: FLAT RIVER
1.1 MI E OF US 71(LA0612), Bossier, LA
Built 1982 Load: 24.6 t ADT: 8,332
Deen Point Rd
FairOver: Flat River Bayou
3.2 MI E OF HWY 3, Bossier, LA
Built 1992 Load: 24.6 t ADT: 130
Powell at Broadway
FairOver: HOLLYWOOD DITCH
0.2 MI EAST OF KENNEDY AV, Caddo, LA
Built 1974 Load: 24.6 t ADT: 320
MAYFIELD ROAD
FairOver: HOLLYWOOD DITCH
0.2 MI EAST OF KENNEDY AV, Caddo, LA
Built 1973 Load: 24.6 t ADT: 280
MONTANA ST
FairOver: COOPER ROAD DITCH
0.2 M N OF LA3194, Caddo, LA
Built 1982 Load: 24.6 t ADT: 650
W. LINCOLN RD
FairOver: CANAL
0.9 MI W OF LA 385, Calcasieu, LA
Built 1995 Load: 24.6 t ADT: 2,124
LA0019
FairOver: LITTLE REDWOOD CK
LA0019, East Feliciana, LA
Built 1951 Load: 24.6 t ADT: 3,332
LA0875
FairOver: CREEK
.8 MI WEST OF LA 15, Franklin, LA
Built 1974 Load: 24.6 t ADT: 44
LA0875
FairOver: CREEK
.3 MI WEST OF LA 15, Franklin, LA
Built 1974 Load: 24.6 t ADT: 44
FDR 155
FairOver: GUYNES BRANCH
NO DATA ENTERED, Grant, LA
Built 1962 Load: 24.6 t ADT: 15
FDR 556
FairOver: PRAIRIE CREEK
LOGMI 1.56 FR 546 TO, Grant, LA
Built 1962 Load: 24.6 t ADT: 79
FDR 556
FairOver: CREEK
LOG MI 0.54 FR 546 T, Grant, LA
Built 1960 Load: 24.6 t ADT: 40
LA0320
FairOver: TETE BAYOU
1 MI EAST OF LA 87, Iberia, LA
Built 1972 Load: 24.6 t ADT: 3,241
Jefferson Island
FairOver: Parc Perdu Bayou
3.0 Mi. W. of US 90, Iberia, LA
Built 1960 Load: 24.6 t ADT: 2,868
VETERAN'S BLVD EB
FairOver: BONNABEL CANAL
0.5 MI. E OF CAUSEWAY, Jefferson, LA
Built 1960 Load: 24.6 t ADT: 19,550
RAOUL ROAD
FairOver: DRAIN
1.0 MI W OF LA 101, Jefferson Davis, LA
Built 1973 Load: 24.6 t ADT: 30
CARL HOPPE ROAD
FairOver: BAYOU
0.5 MI E of LA 383, Jefferson Davis, LA
Built 1979 Load: 24.6 t ADT: 30
LA0577
FairOver: DIVERSION CHANNEL
.1 MI NORTH OF LA 610, Madison, LA
Built 1962 Load: 24.6 t ADT: 914
LA0590
FairOver: CREEK
2.35 MI EAST OF US 425, Morehouse, LA
Built 1970 Load: 24.6 t ADT: 805
LAKESHORE DR
FairOver: ORLEANS AVENUE CANAL
0.03 MI W OF MARCONI DR, Orleans, LA
Built 2003 Load: 24.6 t
Lee Bridge Rd
FairOver: FLAGON BAYOU
1.99 MI. NE OF LA 116, Rapides, LA
Built 1991 Load: 24.6 t ADT: 60
DELCHO RD
FairOver: DRY FORK CREEK
0.5 MI W OF US 425, Richland, LA
Built 2016 Load: 24.6 t ADT: 103
US0171
FairOver: MIDDLE RELIEF
1.24 MI. NORTH OF LA 120, Sabine, LA
Built 1963 Load: 24.6 t ADT: 4,790
US0090
FairOver: VACHERIE CANAL
1.4 MI EAST OF LA 318, St. Mary, LA
Built 1978 Load: 24.6 t ADT: 8,073
Honey Island Swamp
FairOver: WOOLY BAYOU
1.4M EAST OF I-59, St. Tammany, LA
Built 1984 Load: 24.6 t
Sandy acres Rd
FairOver: CREEK
0.2M S OF WEINBERGER RD, Tangipahoa, LA
Built 1993 Load: 24.6 t ADT: 8
Savanne Rd
FairOver: BLACK BAYOU
0.01 MI NE OF LA 182, Terrebonne, LA
Built 2001 Load: 24.6 t ADT: 2,114
US0167
FairOver: MIDDLE SLOUGH
1.7 MI SOUTH OF LA 15, Union, LA
Built 1952 Load: 24.6 t ADT: 422
LA0697
FairOver: COULEE KENNYS
0.3 MI W OF LA 167, Vermilion, LA
Built 1976 Load: 24.6 t ADT: 970
Boat Shop Rd
FairOver: TIGER BAYOU
1.3 Mi W of La 331, Vermilion, LA
Built 1970 Load: 24.6 t ADT: 350
NONA ST
FairOver: CASTOR BAYOU TRIB.
0.58 MILES WEST OF US 171, Vernon, LA
Built 1977 Load: 24.6 t ADT: 2,000
LA0002
FairOver: LICK CREEK
.7 MI EAST OF LA 802, Webster, LA
Built 1979 Load: 24.6 t ADT: 1,540
PERKINS LN
FairOver: CLEAR CREEK
0.3 MI W OF B. F. TOWER, Allen, LA
Built 2004 Load: 24.9 t ADT: 40
PALESTINE RD
FairOver: SIX MILE CREEK RELIEF
1.8 MI E OF LA 377, Allen, LA
Built 2003 Load: 24.9 t ADT: 609
Cottonport Ave
FairOver: BAYOU ROUGE
0.02 MI. NORTH OF LA 29, Avoyelles, LA
Built 1992 Load: 24.9 t ADT: 200
US0190
FairOver: BAYOU
0.2 MI. W OF LA389, Beauregard, LA
Built 1971 Load: 24.9 t ADT: 3,126
LA0517
FairOver: CREEK
3.14 MI WEST OF LA 9, Bienville, LA
Built 1970 Load: 24.9 t ADT: 301
I0020
FairOver: TRAFFIC STREET
.36 MI EAST LA 1, Bossier, LA
Built 1966 Load: 24.9 t ADT: 69,892
I0020
FairOver: TRAFFIC STREET
.36 MI EAST LA 1, Bossier, LA
Built 1966 Load: 24.9 t ADT: 71,593
Whittington Rd
FairOver: Bodcau Bayou Trib
3 MI N OF HWY 157, Bossier, LA
Built 1987 Load: 24.9 t ADT: 30
LA0170
FairOver: RED BAYOU
1.9 MI EAST OF I-49, Caddo, LA
Built 1930 Load: 24.9 t ADT: 1,209
W 80th ST
FairOver: 81ST STREET DITCH
3.2 MI E OF US 171, Caddo, LA
Built 1960 Load: 24.9 t ADT: 200
MILLER AVE
FairOver: CALCASIEU RIVER
0.4 MI N of MCKINLEY ST., Calcasieu, LA
Built 2013 Load: 24.9 t ADT: 4,463
I0210
FairOver: CONTRABAND BAYOU
.6 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1964 Load: 24.9 t ADT: 65,748
I0210
FairOver: CONTRABAND BAYOU
.6 MI EAST OF LA 1138-2, Calcasieu, LA
Built 1964 Load: 24.9 t ADT: 608
LAKE ST
FairOver: BAYOU CONTRABAND
0.8 MI N OF I-210, Calcasieu, LA
Built 1982 Load: 24.9 t ADT: 17,888
CLAUDE HEBERT RD
FairOver: DRAINAGE DITCH
0.01 MI N OF LA3059, Calcasieu, LA
Built 2001 Load: 24.9 t ADT: 673
ROUTE 66
FairOver: BUXTON CREEK
3.5 MI W OF LA 27, Calcasieu, LA
Built 2001 Load: 24.9 t ADT: 345
LA0513
FairOver: CREEK
1.7 MI NORTH OF LA 346, De Soto, LA
Built 1975 Load: 24.9 t ADT: 243
Gross Rd
FairOver: SANDY CREEK BRIDGE
4.8 MI. SE-LA67, LA63 JCT, East Feliciana, LA
Built 2006 Load: 24.9 t ADT: 144
Showing 2,751-2,800 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 |