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 October 2021, a total of 200 kilometres has been constructed, including the Pukatja (Ernabella) Airstrip Access Road, the 43 kilometre section (Stage 1) between Pukatja (Ernabella) to Umuwa (Double Tank), the 14 kilometre section between Umuwa (Double Tank) to Kaltjiti (Fregon) and the 74 kilometre section (Stage 3) from the Stuart Highway to Mimili.
The remaining 10 kilometre section within Stage 2 between Kaltjiti (Fregon) and Mimili is currently being constructed.
Sealing of floodways, Mimili Access, Mimili Airstrip Access, Kaltjiti (Fregon) Access and Kaltjiti (Fregon) Airstrip Access Roads are currently underway, with an expected completion of mid-December 2021, weather permitting.