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
LA0103
FairOver: DRAINAGE CANAL
2.58 MI NORTH OF US 190, St. Landry, LA
Built 1962 Load: 27.2 t ADT: 1,484
LA0752
FairOver: BAYOU MALLET
0.3 MILES SOUTH OF US 190, St. Landry, LA
Built 1968 Load: 27.2 t ADT: 475
LA0752
FairOver: DRAINAGE CANAL
0.1 MI SOUTH OF US 190, St. Landry, LA
Built 1968 Load: 27.2 t ADT: 475
LA0353
FairOver: CYPRESS ISLAND BAYOU
1.9 MI NORTH OF LA 31, St. Martin, LA
Built 1962 Load: 27.2 t ADT: 4,152
FLAMINGO BLVD
FairOver: CREEK
0.02 SE of LA 70, St. Mary, LA
Built 1981 Load: 27.2 t ADT: 700
MLK Jr. St.
FairOver: CHOUPIQUE BAYOU
0.2 Mi SE of La 83, St. Mary, LA
Built 1965 Load: 27.2 t ADT: 210
Cypremort Rd.
FairOver: VACHERE CANAL
0.05 Mi N. LA 83, St. Mary, LA
Built 1958 Load: 27.2 t ADT: 470
US0190
FairOver: BAYOU LIBERTY
US0190, St. Tammany, LA
Built 1933 Load: 27.2 t ADT: 16,944
LA0025
FairOver: MORGAN BRANCH
0.8 M S OF LA 40, St. Tammany, LA
Built 1963 Load: 27.2 t ADT: 3,684
Honey Island Swamp
FairOver: TILL ED BAYOU
0.3M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 27.2 t
Honey Island Swamp
FairOver: DUCK BAYOU
2.22M EAST OF I-59, St. Tammany, LA
Built 1983 Load: 27.2 t
Honey Island Swamp
FairOver: WOOLY BAYOU
1.88M EAST OF I-59, St. Tammany, LA
Built 1983 Load: 27.2 t
Honey Island Swamp
FairOver: WOOLY BAYOU
1.67M EAST OF I-59, St. Tammany, LA
Built 1983 Load: 27.2 t ADT: 40
Honey Island Swamp
FairOver: WOODS BAYOU
2.2M EAST OF I-59, St. Tammany, LA
Built 1984 Load: 27.2 t
LA0022
FairOver: SELSERS CREEK
1.9 M E OF E JCT. US 51B, Tangipahoa, LA
Built 1938 Load: 27.2 t ADT: 12,900
LA0022
FairOver: DRAIN
1.4 M W OF LA 445, Tangipahoa, LA
Built 1939 Load: 27.2 t ADT: 6,435
LA0022
FairOver: DRAIN
1.3 M W OF LA 445, Tangipahoa, LA
Built 1939 Load: 27.2 t ADT: 6,435
LA0440
FairOver: BIG CREEK
LA0440, Tangipahoa, LA
Built 1960 Load: 27.2 t ADT: 752
Firetower Rd
FairOver: MILE BRANCH
3.3 MI N/E JCT. 445 & 22, Tangipahoa, LA
Built 1999 Load: 27.2 t ADT: 1,844
Harvey Lavigne Rd
FairOver: SIM'S CREEK
2.8 MI N OF JCT LA495 &22, Tangipahoa, LA
Built 2001 Load: 27.2 t ADT: 992
LA0575
FairOver: MILL BAYOU
2.O MI EAST OF LA 888, Tensas, LA
Built 1962 Load: 27.2 t ADT: 26
LA0182
FairOver: DRAIN CANAL
11.09 MI EAST OF LA 20, Terrebonne, LA
Built 1931 Load: 27.2 t ADT: 3,687
LA0002
FairOver: MILL CREEK
.9 MI WEST OF LA 15, Union, LA
Built 1964 Load: 27.2 t ADT: 11,805
LA0092
FairOver: B GRAND MARAIS
0.7 MI E. OF LA 700, Vermilion, LA
Built 1961 Load: 27.2 t ADT: 5,170
LA0092
FairOver: CREEK
1.0 MI E. OF LA 700, Vermilion, LA
Built 1961 Load: 27.2 t ADT: 5,170
Old La 690
FairOver: COULEE
0.6 MI W of LA 330, Vermilion, LA
Built 1980 Load: 27.2 t ADT: 430
Ellis Bridge Rd
FairOver: Gueydan Canal
1.3 Mi W of La 91, Vermilion, LA
Built 1960 Load: 27.2 t ADT: 160
LA0008
FairOver: SABINE RIVER @ BURR FERR
1.5 MI WEST OF THE WEST I, Vernon, LA
Built 1937 Load: 27.2 t ADT: 1,229
LA0021
FairOver: FOSTER CREEK
LA0021, Washington, LA
Built 1960 Load: 27.2 t ADT: 2,646
LA0585
FairOver: CREEK
1.2 MI WEST OF LA 577, West Carroll, LA
Built 1960 Load: 27.2 t ADT: 422
LA0588
FairOver: DEEP GULLY
4.32 MI EAST OF LA 17, West Carroll, LA
Built 1963 Load: 27.2 t ADT: 171
US0167
FairOver: BIG CREEK
2.7 MI NORTH OF LA 126, Winn, LA
Built 1952 Load: 27.2 t ADT: 5,107
US0190
FairOver: SWAMP
2.77 MI. W OF INT LA389, Beauregard, LA
Built 1971 Load: 27.5 t ADT: 3,126
US0190
FairOver: BLACK LAKE
1.2 MI. W OF INT LA389, Beauregard, LA
Built 1971 Load: 27.5 t ADT: 3,126
LA0526
FairOver: BAYOU PIERRE
1.3 MI EAST OF LA 523, Caddo, LA
Built 1977 Load: 27.5 t ADT: 19,314
LA0526
FairOver: BAYOU PIERRE
1.3 MI EAST OF LA 523, Caddo, LA
Built 1977 Load: 27.5 t ADT: 16,911
WYNGATE BLVD
FairOver: 71ST STREET DITCH
0.8 MI.SO. OF LA 511, Caddo, LA
Built 1956 Load: 27.5 t ADT: 2,200
Jewella
FairOver: AIRPORT DITCH
0.2 MI. SO.OF LA 511, Caddo, LA
Built 1972 Load: 27.5 t ADT: 20,178
Mira-Myrtis Rd
FairOver: BIG BRANCH
2 MI. W OF US71, Caddo, LA
Built 1948 Load: 27.5 t ADT: 40
EAST PRIEN LAKE RD
FairOver: KAYOUCHE COULEE
0.8 MI EAST OF LA 14, Calcasieu, LA
Built 2005 Load: 27.5 t ADT: 5,210
I0010
FairOver: WASHINGTON STREET
0.7 M S of I-110&LA 73, East Baton Rouge, LA
Built 1963 Load: 27.5 t ADT: 197,070
KAWANEE AVE
FairOver: ELMWOOD CANAL
.04 MILES WEST OF ACADEMY, Jefferson, LA
Built 2008 Load: 27.5 t
US0090-B
FairOver: RAMP LA-4
.2 MI EAST OF LA 23, Jefferson, LA
Built 1985 Load: 27.5 t ADT: 15,955
LA0101
FairOver: DRAIN
0.4 MI E of US 165, Jefferson Davis, LA
Built 1962 Load: 27.5 t ADT: 3,166
LA0039
FairOver: Japonica St.
5.2 MI W OF LA 47, Orleans, LA
Built 1957 Load: 27.5 t ADT: 36,993
Earhart to S Broad
FairOver: STREETS
2.0 MI S OF TULANE AVENUE, Orleans, LA
Built 1951 Load: 27.5 t ADT: 5,441
Boy Scout Rd
FairOver: ROARING CREEK
1.25 MI. SOUTH OF LA 112, Rapides, LA
Built 1984 Load: 27.5 t ADT: 30
Honey Island Swamp
FairOver: DUCK BAYOU
0.7M EAST OF I-59, St. Tammany, LA
Built 1982 Load: 27.5 t
Oliver Rd
FairOver: BIG FOUR DITCH
1.36 Mi. W of LA 332, Vermilion, LA
Built 1960 Load: 27.5 t ADT: 80
Spring Bayou Rd
FairOver: LITTLE RIVER
0.29 MI. SOUTH OF LA 1190, Avoyelles, LA
Built 1998 Load: 27.9 t ADT: 550
Showing 3,151-3,200 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 |