The upgrade is being undertaken in three main stages:
- Stage 1: Pukatja (Ernabella) to Umuwa (Double Tank)
- Stage 2: Umuwa (Double Tank) to Mimili
- Stage 3: Mimili to Iwantja (Indulkana)
As at August 2020, a total of 68 kilometres has been constructed, including the Pukatja (Ernabella) Airstrip Access Road, a 7 kilometre section from the Stuart Highway to Iwantja (Indulkana), the 43 kilometre section (Stage 1) between Pukatja (Ernabella) to Umuwa (Double Tank) and the 14 kilometre section between Umuwa (Double Tank) and Kaltjiti (Fregon).
Works on Stage 3, from Mimili to Iwantja (Indulkana) are well underway, and expected to be completed by November 2020, weather permitting.
Works on Stage 2, from Double Tank to Kaltjiti (Fregon) is almost complete, with the remaining length expected to be completed October 2020.
Works on Stage 2, Kaltjiti (Fregon) to Fregon East 50 have commenced and are well underway.