A section of this Mallee Highway between junction with Duke Highway (to the west) and the settlement of Sherlock (to the east) appears to be coded / labelled as 'One-Way' in a westerly direction.
Thus on my Organic Maps app (on my mobile phone, which I understand uses OpenStreetMap), any route calculation cannot use this Highway if travelling east.

Unable to answer "Is this still here?" for node/8661885193 via StreetComplete 54.1:

No church signage

New crossing

via StreetComplete 54.0

Attached photo(s):
https://westnordost.de/p/176663.jpg

Oatlands Park lodge

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Attached photo(s):
https://westnordost.de/p/176657.jpg

Si Vera Kafe

via StreetComplete 54.1

Attached photo(s):
https://westnordost.de/p/177702.jpg

Unable to answer "This shop has been vacant. What’s here now?" for node/4895170358 via StreetComplete 54.1:

Engaging Minds
Clinical Psychology

Unable to answer "This shop has been vacant. What’s here now?" for node/4895170357 via StreetComplete 54.1:

Gentle touch orthodonticd

Dental Society

via StreetComplete 54.1

MyBedroom