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
OLD DARBONNE RD
FairOver: N TUPAWEK BAYOU
1.0 MI N of LA 616, Ouachita, LA
Built 1999 Load: 29.2 t ADT: 448
North Blvd
FairOver: HORSESHOE CANAL
0.28 MI. NORTH OF US 71, Rapides, LA
Built 1992 Load: 29.2 t ADT: 10,300
HOLLY GROVE RD
FairOver: BAYOU BONNA VISTA
HOLLY GROVE ROAD, Sabine, LA
Built 1992 Load: 29.2 t ADT: 270
MELVIN PEREZ PKWY
FairOver: DRAINAGE CANAL
0.04 MI S OF LA 46, St. Bernard, LA
Built 1990 Load: 29.2 t ADT: 3,191
Landfill Ln.
FairOver: SIMMONS BAYOU
0.1 Mi W of Berwick Rd. S, St. Mary, LA
Built 1977 Load: 29.2 t ADT: 450
CSWY BRIDGE N. B.
FairOver: LAKE PONTCHARTRAIN
CAUSEWAY - NORTH BOUND, St. Tammany, LA
Built 1965 Load: 29.2 t ADT: 18,830
LA0112
FairOver: PERKINS BRANCH
0.1 MI W of LA 377, Allen, LA
Built 2009 Load: 29.5 t ADT: 718
LA0112
FairOver: DRAIN
3.4 MI E of LA 113, Allen, LA
Built 2010 Load: 29.5 t ADT: 718
HICKORY FLAT RD
FairOver: CREEK
1.8 MI S OF WARD LINE RD, Allen, LA
Built 1982 Load: 29.5 t ADT: 47
LA0507
FairOver: DRAIN
0.44 MILES WEST OF LA 153, Bienville, LA
Built 2008 Load: 29.5 t ADT: 592
James St.
FairOver: SALINE BAYOU TRIB
0.04 MI S OF SYCAMORE ST., Bienville, LA
Built 1991 Load: 29.5 t ADT: 100
South Myrtle St.
FairOver: SALINE BAYOU TRIB
0.1 MI N OF LOCUST ST., Bienville, LA
Built 1991 Load: 29.5 t ADT: 100
South Beech St.
FairOver: SALINE BAYOU TRIB
0.4 M SOUTH OF US 80, Bienville, LA
Built 1991 Load: 29.5 t ADT: 100
BLANCHARD FURRH RD
FairOver: TRIB. TO SHETTLEWORTH BY
2.1 M E OF W LAKESHORE DR, Caddo, LA
Built 1978 Load: 29.5 t ADT: 77
US0171
FairOver: DIAMOND GULLY
12 MI S OF LA12, Calcasieu, LA
Built 1997 Load: 29.5 t ADT: 18,040
7TH ST
FairOver: DRAIN
0.3 MI E of LA 385, Calcasieu, LA
Built 1999 Load: 29.5 t ADT: 2,385
W Oak Ln
FairOver: BAYOU MARINGOUIN
0.9M SOUTH OF RAMAH, Iberville, LA
Built 1992 Load: 29.5 t ADT: 130
TERRY PKWY
FairOver: INDUSTRY CANAL
0.1MI.N.OF BELLCHASE, Jefferson, LA
Built 1974 Load: 29.5 t
LA1126
FairOver: BAYOU CHENE
4.5 MILES EAST JCT 99 ON, Jefferson Davis, LA
Built 2009 Load: 29.5 t ADT: 507
LA1126
FairOver: GRAND MARIAS BAYOU
5.22 MILES EAST OF JCT LA, Jefferson Davis, LA
Built 2011 Load: 29.5 t ADT: 507
LA0102
FairOver: BROADMORE DITCH
0.25 MI E OF INT LA 26, Jefferson Davis, LA
Built 1999 Load: 29.5 t ADT: 832
US0090
FairOver: DRAINAGE CANAL
2.17 MI EAST OF LA 316, Lafourche, LA
Built 1982 Load: 29.5 t ADT: 13,535
LA0124
FairOver: CREEK
3.8 MI EAST OF US 165, LaSalle, LA
Built 1980 Load: 29.5 t ADT: 1,838
I0020
FairOver: MISSISSIPPI RIVER
.1 MI EAST OF US 80, Madison, LA
Built 1973 Load: 29.5 t ADT: 36,023
LA0153
FairOver: CAESAR CREEK
.99 MI. N OF INT LA9, Natchitoches, LA
Built 1977 Load: 29.5 t ADT: 609
LA0153
FairOver: DEMERY CREEK
5.50 MI. N OF INT LA9, Natchitoches, LA
Built 1977 Load: 29.5 t ADT: 609
LA0153
FairOver: ANTOINE CREEK
9.82 MI. N OF INT LA9, Natchitoches, LA
Built 1977 Load: 29.5 t ADT: 609
LA0118
FairOver: CREEK
2.85 MI. WEST OF LA 117, Natchitoches, LA
Built 1982 Load: 29.5 t ADT: 1,471
Goodnews Ave
FairOver: BARRIERE CANAL
0.15 S. OF LA 23, Plaquemines, LA
Built 1984 Load: 29.5 t ADT: 300
LA0078
FairOver: PORT ALLEN LOCK
256 Ft S of LA 979, Pointe Coupee, LA
Built 1980 Load: 29.5 t ADT: 4,464
LA0010
FairOver: BAYOU CARRON
1.6 MI NORTH OF LA 10, St. Landry, LA
Built 1936 Load: 29.5 t ADT: 2,508
I0012
FairOver: TCHEFUNCTE RIVER
1.1 miles east of LA 21, St. Tammany, LA
Built 1975 Load: 29.5 t ADT: 79,563
CAUSEWAY SB
FairOver: LAKE PONTCHARTRAIN
CAUSEWAY SOUTHBOUND, St. Tammany, LA
Built 1956 Load: 29.5 t ADT: 18,830
US0090
FairOver: ST. LOUIS CANAL
02554240718181, Terrebonne, LA
Built 1981 Load: 29.5 t ADT: 12,998
US0090
FairOver: ST. LOUIS CANAL
02554240718182, Terrebonne, LA
Built 1981 Load: 29.5 t ADT: 11,661
US0079
FairOver: CREEK
1.76M EAST OF LA 159, Webster, LA
Built 1932 Load: 29.5 t ADT: 9,942
Miller Rd
FairOver: COOLEY BRANCH
1.5 MI N OF HWY 79, Webster, LA
Built 1978 Load: 29.5 t ADT: 110
LA0365
FairOver: GRAND COULEE DITCH
0.31 MI E of LA 370, Acadia, LA
Built 1979 Load: 29.8 t ADT: 568
LA3070
FairOver: BAYOU JONAS
1.73 MI NORTH OF LA 100, Acadia, LA
Built 1980 Load: 29.8 t ADT: 956
I0220
FairOver: RUSSELL ROAD
5.4 MI NORTH OF I-20, Caddo, LA
Built 1979 Load: 29.8 t ADT: 42,148
84TH ST
FairOver: BRUSHY BAYOU
0.10 MI EAST OF WYNNGATE, Caddo, LA
Built 1987 Load: 29.8 t ADT: 3,594
LA0027
FairOver: HOUSTON RIVER
0.3 MI N OF LA 379, Calcasieu, LA
Built 1982 Load: 29.8 t ADT: 7,798
Hwy 3102
FairOver: LARTO BAYOU
3.2 MI W of LA 124, Catahoula, LA
Built 1977 Load: 29.8 t ADT: 130
I0049
FairOver: LT FRONTAGE RD RAMBIN B.
0.3 MILES NORTH OF LA 175, De Soto, LA
Built 2006 Load: 29.8 t ADT: 1,490
LAKESHORE DRIVE
FairOver: CANEY LAKE
1.5 MI. NW WOMACK, Jackson, LA
Built 1985 Load: 29.8 t ADT: 355
LA3134
FairOver: B.DES FAMILLIES
.01 MI NORTH OF LA 45, Jefferson, LA
Built 1981 Load: 29.8 t ADT: 7,837
LA3134
FairOver: B.DES FAMILLIES
.01 MI NORTH OF LA 45, Jefferson, LA
Built 1981 Load: 29.8 t ADT: 5,599
LA0124
FairOver: CREEK
3.9 MI EAST OF US 165, LaSalle, LA
Built 1980 Load: 29.8 t ADT: 318
LA0127
FairOver: SANDY CREEK
.75 MI NORTH OF LA 125, LaSalle, LA
Built 1974 Load: 29.8 t ADT: 314
US0425
FairOver: BAYOU BARTHOLOMEW
.01 MI SOUTH OF LA 593, Morehouse, LA
Built 1985 Load: 29.8 t ADT: 7,629
Showing 3,401-3,450 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 |