The main highway of Arunachal Pradesh is the Trans-Arunachal Highway, National Highway 13 (1,293 km (803 mi); formerly NH-229 and NH-52).
It originates in Tawang and spans most of the width of Arunachal Pradesh, then crosses south into Assam and ends at Wakro.
The project was announced by then Prime Minister Manmohan Singh in 2008 for completion by 2015–16, but is not yet completed.

NH-15 through Assam follows the southern border of Arunachal Pradesh.
Access to central Arunachal Pradesh has been facilitated by the Bogibeel Bridge, an earthquake-resistant rail and road bridge over the Brahmaputra River in Assam, opened for public use on 25 December 2018 by Prime Minister Narendra Modi.
A spur highway numbered NH-415 services Itanagar.

State-owned Arunachal Pradesh State Transport Services (APSTS) runs daily bus service from Itanagar to most district headquarters including Tezpur, Guwahati in Assam, Shillong in Meghalaya, and Dimapur in Nagaland.

As of 2007, every village is connected by road, thanks to funding provided by the central government.
Every small town has its own bus station with daily bus service.
Connections to Assam have increased commerce.

In 2014, two additional east–west highways were proposed: an Industrial Corridor Highway in the lower foothills, and a Frontier Highway along the McMahon Line.
The proposed alignment of the Frontier Highway has been published.
China has warned India against paving the road.
The main highway of Arunachal Pradesh is the Trans-Arunachal Highway, National Highway 13 (1,293 km (803 mi); formerly NH-229 and NH-52). It originates in Tawang and spans most of the width of Arunachal Pradesh, then crosses south into Assam and ends at Wakro. The project was announced by then Prime Minister Manmohan Singh in 2008 for completion by 2015–16, but is not yet completed.
NH-15 through Assam follows the southern border of Arunachal Pradesh. Access to central Arunachal Pradesh has been facilitated by the Bogibeel Bridge, an earthquake-resistant rail and road bridge over the Brahmaputra River in Assam, opened for public use on 25 December 2018 by Prime Minister Narendra Modi. A spur highway numbered NH-415 services Itanagar.
State-owned Arunachal Pradesh State Transport Services (APSTS) runs daily bus service from Itanagar to most district headquarters including Tezpur, Guwahati in Assam, Shillong in Meghalaya, and Dimapur in Nagaland.
As of 2007, every village is connected by road, thanks to funding provided by the central government. Every small town has its own bus station with daily bus service. Connections to Assam have increased commerce.
In 2014, two additional east–west highways were proposed: an Industrial Corridor Highway in the lower foothills, and a Frontier Highway along the McMahon Line. The proposed alignment of the Frontier Highway has been published. China has warned India against paving the road.
Arunachal Pradesh