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Louisiana Bridges

12,698 bridges across 64 counties

Bridge Map

Summary

Total Bridges:12,698

Good Condition:4,919 (39%)

Fair Condition:6,321 (50%)

Poor Condition:1,458 (11%)

Average Age:43.4 years

Counties:64

Bridge Condition Distribution

Good

Fair

Poor

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Bridge Types

Bridge Type	Count	Percentage
Slab	5,867	46.2%
Stringer/Multi-beam or Girder	3,152	24.8%
Culvert	2,572	20.3%
Tee Beam	306	2.4%
Channel Beam	283	2.2%
Girder and Floorbeam System	181	1.4%
Box Beam or Girders - Multiple	117	0.9%
Movable - Swing	77	0.6%
Movable - Lift	46	0.4%
Truss - Thru	38	0.3%
Arch - Deck	24	0.2%
Movable - Bascule	16	0.1%
Other	5	0.0%
Box Beam or Girders - Single or Spread	4	0.0%
Truss - Deck	3	0.0%
Segmental Box Girder	3	0.0%
Stayed Girder	2	0.0%
Unknown	1	0.0%
Frame	1	0.0%

Bridge Age Distribution

Bridges Built Over Time

Notable Bridges in Louisiana

Most Trafficked Bridges

WARDS CREEK

Fair

County 033, Louisiana

Daily Traffic: 201,563 vehicles

WASHINGTON STREET

Fair

County 033, Louisiana

Daily Traffic: 197,070 vehicles

MISSISSIPPI RIVER

Fair

County 033, Louisiana

Daily Traffic: 197,070 vehicles

Oldest Bridges

JUDD BAYOU

Fair

County 065, Louisiana

Built in 1908 (118 years old)

INNER HARBOR NAVIGATION

Poor

County 071, Louisiana

Built in 1919 (107 years old)

MARTEAU BAYOU

Poor

County 043, Louisiana

Built in 1919 (107 years old)

Longest Bridges

LAKE PONTCHARTRAIN

Fair

County 103, Louisiana

Length: 10.0 meters

LAKE PONTCHARTRAIN

Fair

County 103, Louisiana

Length: 10.0 meters

I-10 & US 51 & SWAMP

Good

County 095, Louisiana

Length: 10.0 meters

Recently Built Bridges

LITTLE BAYOU CLEARGood

County 079 • Built in 2024

LONG BRANCHGood

County 079 • Built in 2024

Middle CreekGood

County 085 • Built in 2024

County 055 • Built in 2023

Mallet BayouGood

County 097 • Built in 2023

Bayou La RoseGood

County 099 • Built in 2023

County 099 • Built in 2023

Grand Canal 02Good

County 099 • Built in 2023

County 113 • Built in 2023

LAPORTS COULEEGood

County 113 • Built in 2023

Counties in Louisiana

64 counties

Acadia Parish County

Allen Parish County

Ascension Parish County

Assumption Parish County

Avoyelles Parish County

Beauregard Parish County

Bienville Parish County

Bossier Parish County

Caddo Parish County

Calcasieu Parish County

Caldwell Parish County

Cameron Parish County

Catahoula Parish County

Claiborne Parish County

Concordia Parish County

De Soto Parish County

East Baton Rouge Parish County

East Carroll Parish County

East Feliciana Parish County

Evangeline Parish County

Franklin Parish County

Grant Parish County

Iberia Parish County

Iberville Parish County

Jackson Parish County

Jefferson Davis Parish County

Jefferson Parish County

La Salle Parish County

Lafayette Parish County

Lafourche Parish County

Lincoln Parish County

Livingston Parish County

Madison Parish County

Morehouse Parish County

Natchitoches Parish County

Orleans Parish County

Ouachita Parish County

Plaquemines Parish County

Pointe Coupee Parish County

Rapides Parish County

Red River Parish County

Richland Parish County

Sabine Parish County

St. Bernard Parish County

St. Charles Parish County

St. Helena Parish County

St. James Parish County

St. John the Baptist Parish County

St. Landry Parish County

St. Martin Parish County

St. Mary Parish County

St. Tammany Parish County

Tangipahoa Parish County

Tensas Parish County

Terrebonne Parish County

Union Parish County

Vermilion Parish County

Vernon Parish County

Washington Parish County

Webster Parish County

West Baton Rouge Parish County

West Carroll Parish County

West Feliciana Parish County

Winn Parish County