Grand Trunk Road (India)

Timeline

1. c. -300–-200Pataliputra–Taxila · BiharThe Mauryan Empire is believed to have built royal roads across the Ganges plain and the northwest passes, connecting the capital Pataliputra with key northwestern garrison towns, with relay stations and milestones serving military deployment and tax collection, forming the earliest political–military transport skeleton of the Grand Trunk Road.
2. c. 1540–1556Sonargaon–Lahore · Dhaka DivisionThe Afghan-born ruler Sher Shah Suri, after defeating Humayun, systematically rebuilt the road from Sonargaon to Lahore, standardizing road width, planting tree-lined shade and sarai (relay stations), and setting milestones every kos, allowing caravans and messengers to travel along a relatively secure chain of facilities; it is regarded by later ages as the direct predecessor of the Grand Trunk Road.
3. c. 1600–1750Agra–Delhi · Uttar PradeshThe Mughal Empire inherited and maintained the road, with Delhi and Agra becoming hubs of imperial postal relay and merchant traffic; markets, toll stations, and religious buildings lined the route, which carried troop movements, pilgrimages, and bulk goods such as cotton cloth and spices, becoming the subcontinent's busiest land artery.
4. c. 1830–1947Calcutta–Peshawar · West BengalIn the nineteenth century the British colonial authorities surveyed, paved, and reinforced bridges along the road, introducing macadamized surfaces and connections to steam transport; the road became a lifeline of colonial administration, troop movement, and raw-material export, and its English name 'Grand Trunk Road' came into wide use in this period.
5. c. 1950Indian National Highway NH19/NH44 corridor · IndiaAfter independence, India, Pakistan, and Bangladesh each incorporated the historic trunk road into modern national highway and expressway systems (such as India's NH19 and NH44 sections); the road continues to carry population migration, industrial logistics, and intercity passenger traffic, and its two-thousand-year accumulation of relay-station layout and urban nodes still shapes the pattern of South Asia's urban belt.