Coalfields Road is the main road to the key mining town of Collie,[2] and passes through mining, forest and agricultural areas with stands of jarrah, wandoo and flood gum nearby.[3] It also traverses the towns of Allanson and Darkan. The section between Collie and Allanson was upgraded in 2010–2011 by increasing the lane and shoulder widths, realigning some of the worst of the winding road sections, lessening some curves, and other improvements.[4]
^Holt, Colin (26 May 2011). "Coalfields Road funding welcome, Holt". Nationals Member for the South West Region (Media Release). Western Australia: The Nationals Western Australia. Archived from the original on 19 March 2012. Retrieved 17 January 2021.