Mount Washington Auto Road

Mount Washington Auto Road
Route information
Length	7.6 mi (12.2 km)
Existed	1861–present
Major junctions
East end	NH 16 in Green's Grant
West end	Mount Washington summit
Location
Country	United States
State	New Hampshire
Counties	Coos
Highway system
New Hampshire Highway System Interstate US State Turnpikes

The Mount Washington Auto Road—originally the Mount Washington Carriage Road^[1]—is a 7.6 mi (12.2 km) toll road in southern Coos County, New Hampshire that extends from New Hampshire Route 16 in Green's Grant, just north of Pinkham Notch, westward across Pinkham's Grant and Thompson and Meserve's Purchase to the summit of Mount Washington in the White Mountains of the US state of New Hampshire. The road climbs 4,618 ft (1,408 m) from an altitude of 1,527 ft (465 m) at the bottom to 6,145 ft (1,873 m) at the top, an average gradient of 11.6%. The road was completed and opened to the public in 1861.^[2]