[4] The highway is notorious for the extremely dangerous conditions caused by its service as a primary access route for workers, fuel, machinery and other supplies to the coal mines of the Bowen Basin.

Completion of a project for pavement widening and strengthening between Clermont and Nebo had in June 2021 been expected in late 2022 at a total cost of $35 million.

[5] As of March 2023, roadworks of various kinds, some resurfacing, some more in depth, are ongoing in places, while others are relatively untouched, and the risk of death or serious injury to the highway’s users remains.

[citation needed] A project to realign and upgrade the road on the Eton Range, at a cost of $189.26 million, was completed in October 2020.

[6] A project to rehabilitate and widen 3 kilometres (1.9 mi) of highway near Wolfgang Road, at a cost of $11.5 million, was completed in March 2022.