Louisiana Highway 77
Route information
Maintained by Louisiana DOTD
Length	49.2 mi[1] (79.2 km)
Existed	1955 renumbering–present
Major junctions
South end	LA 1 in Plaquemine
Major intersections	I-10 in Grosse Tete US 190 in Livonia
North end	LA 10 north of Fordoche
Location
Country	United States
State	Louisiana
Parishes	Iberville, Pointe Coupee
Highway system
Louisiana State Highway System Interstate US State Scenic
← LA 76 → LA 78

Louisiana Highway 77 (LA 77) is a state highway in Louisiana that serves Iberville and Pointe Coupee parishes. It spans 49.2 miles (79.2 km).

LA 77 begins at LA 1 near The Island Country Club in Plaquemine and runs parallel with Bayou Jacob as it heads west. Leaving Plaquemine, the highway then runs parallel with LA 3066 and Bayou Plaquemine heading through Crescent. Meeting Port Allen Lock, it crosses over the Bayou Grosse Tête Draw Bridge before heading north. It then runs parallel with Port Allen Lock and then heads northwest, intersecting with LA 386 before heading into Grosse Tête. The highway then interchanges with I-10 at exit 139 before entering Rosedale and intersecting LA 76. LA 77 then runs parallel with LA 411 heading into Maringouin. It then intersects LA 977 and runs through downtown before meeting LA 76 again before heading north. The highway then enters Valverda and intersects LA 977 before running parallel with LA 411 and Port Allen Lock. It then intersects LA 81 and US 190 before passing through Livonia. The highway then turns to the west and passes through Fordoche and intersects LA 81 again before turning to the north. LA 77 then meets its northern terminus at LA 10 and the road continues north assigned as LA 10.

Parish	Location	mi	km	Destinations	Notes
Iberville	Plaquemine	0.0	0.0	LA 1 – Port Allen, Donaldsonville	Southern terminus
	​	17.2	27.7	LA 386
	Grosse Tete	21.8	35.1	I-10 – Baton Rouge, Lafayette
	Rosedale	23.9	38.5	LA 76 – Port Allen
	Maringouin	29.8	48.0	LA 977
		30.3	48.8	LA 76 – Port Allen
Pointe Coupee	​	34.5	55.5	LA 977 – Maringouin
	Livonia	35.3	56.8	LA 81 – Lottie
		35.6	57.3	US 190 – Baton Rouge, Opelousas
	Fordoche	42.0	67.6	LA 81 – Lottie, Livonia
	​	47.5	76.4	LA 77 Spur – Morganza
	​	49.1	79.0	LA 10 – Krotz Springs	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

Louisiana Highway 77 Spur
Location	none
Length	1.44 mi (2.32 km)

Louisiana Spur Highway 77 (Spur LA 77) is a 1.4-mile-long (2.3 km) highway that covers a glitch in the state highway system. The current LA 77 follows the routing of the original Jefferson Highway, and the LA 77 alignment follows the old road to meet LA 10 West. However, this shortcut is used to reach Morganza, to the northeast of Livonia.^[2]

The entire highway is in Pointe Coupee Parish.

Location	mi[2]	km	Destinations	Notes
​	0.0	0.0	LA 77	Western terminus
​	1.4	2.3	LA 10 – Melville	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• LADOTD map of Numbered Highways in Louisiana