National Highway 1D (India, old numbering)

National Highway 1D
Map of National Highway 1D in red
Route information
Length	422 km (262 mi)
Major junctions
West end	Srinagar, Jammu and Kashmir
Major intersections	NH 1A in Srinagar
East end	Leh, Ladakh
Location
Country	India
States	Jammu and Kashmir: 422 km (262 mi)
Primary destinations	Srinagar - Zoji La - Kargil - Leh
Highway system
Roads in India Expressways National State Asian
← NH 1A → NH 21

National Highway 1D (NH 1D), also known as Srinagar–Leh Highway, was a National Highway in the state of Jammu and Kashmir that connected Srinagar to Leh in Ladakh. The Srinagar-Leh Highway was declared as National Highway in 2006.^[1][2] It is now part of National Highway 1 that extends west to Uri.

The old Central Asian trade route Srinagar–Leh–Yarkand was also known as the Treaty Road, after a commercial treaty signed in 1870^[3] between Maharaja Ranbir Singh and Thomas Douglas Forsyth.^[4]