Gulf Coast

LA 1: End of the Road

down the longest street in the world

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Drive
Donaldsonville → Grand Isle
Distance
~110 miles
Time
1–2 days
Highways
LA 1 · LA 308
Avoids
US 90 four-lane
Region
Gulf Coast

Bayou Lafourche was once a mouth of the Mississippi, and the unbroken 100-mile ribbon of settlement down both banks earned it the nickname the longest street in the world. LA 1 and LA 308 run it as a pair, one on each bank, through sugar country and shrimp country to Leeville's sinking tombs and Grand Isle, Louisiana's only inhabited barrier island. This is the road to watch the coast disappearing in real time.

📍 Bayou Lafourche corridor markers run both banks; land-loss interpretation thickens below Golden Meadow.

The drive, segment by segment

Sugar Bayou

Donaldsonville → Thibodaux · ~30 mi

Down from the river through cane fields and the bayou's old plantation towns, Madewood gleaming on the 308 bank.

The Long Street

Thibodaux → Golden Meadow · ~45 mi

Lockport, Larose, Cut Off, Galliano: one continuous waterfront town where shrimp boats park like pickups.

To the Island

Golden Meadow → Grand Isle · ~35 mi

Leeville's cemetery in the marsh, the elevated toll road over open water, and the island at the end of everything.

Worth a detour

More back-roads routes

More in the Gulf Coast: US 90: The Creole Coast · The Forgotten Coast · Bayou Teche & the Cajun Prairie · River Road & the Felicianas · US 90: The Florida Backbone · US 90: Rice & Rails · Cane River & El Camino Real · Poverty Point & the Delta Parishes

Browse all 85 routes → · Ready-made itineraries →