The upgrade is being undertaken in three main stages:
- Stage 1: Pukatja (Ernabella) to Umuwa (Double Tanks)
- Stage 2: Umuwa (Double Tanks) to Mimili
- Stage 3: Mimili to Iwantja (Indulkana)
As at May 2019, a total of 54 kilometres has been constructed, including the Pukatja (Ernabella) Airstrip Access Road, a 7 kilometre section from the Stuart Highway to Iwantja (Indulkana), and the 43 kilometre section (Stage 1) between Pukatja (Ernabella) to Umuwa (Double Tank).
Works on Stage 3, from Mimili to Iwantja (Indulkana) are underway, and expected to be completed by July 2020, weather permitting.