Nimmu–Padum–Darcha road or Zanskar Highway is a road under construction between the Indian union territory of Ladakh and the state of Himachal Pradesh, passing through the region of Zanskar. It connects Nimmu in the Indus Valley to Padum, the capital of Zanskar, to Darcha, the main town in Lahul and Spiti. It provides an alternative to the Leh–Manali Highway in linking Ladakh with the rest of India. It is being built by the Border Roads Organisation (BRO) of the Indian army. It is expected to be completed by late 2023.
It is estimated that travel on this road will only take 8-9 hours to reach Leh from Manali, as opposed to the Leh-Manali highway taking almost 14-16 hours. The road is strategic for the Indian Army as it is set back the international border and can facilitate safe troop movements.