[2][3] Freight vehicles, servicing the mining and agricultural industries, make up a significant proportion of the traffic using the Mid West road network.
It enters the region a short distance north of the turnoff to Jurien Bay, and continues north-west to Geraldton.
The road connects Indian Ocean Drive at Coolimba with Brand Highway at Eneabba.
It forms the entirety of State Route 123, linking the coastal city of Geraldton with Mount Magnet on Great Northern Highway.
George Grey Drive is a major north-south coastal road in the Mid West region.
From the northern edge of the Wheatbelt, the highway travels north through Paynes Find, Mount Magnet, Cue, and Meekatharra.
[2] Indian Ocean Drive is a main north-south coastal road in the south-west of Western Australia's Mid West region.
From Green Head, it travels north via Leeman and Coolimba to Brand Highway in Arrowsmith, south of Dongara.
The road enters the region at Maya, continuing north from Great Northern Highway at Wubin in the Wheatbelt.
It begins at a grade separated interchange with Brand Highway in Geraldton, and from there heads north via Northampton to Eurardy at the northern edge of the Mid West region.
[2] Both Port Gregory Road and George Grey Drive were declared State Route 139 in March 2016[9]