The Spicers Gap Road is the original route that links the Darling Downs with Brisbane.

The road was constructed by convicts during the 19th century and was listed on the Queensland Heritage Register in 1999.

[4] Until the late 1990s, Spicers Gap Road was a popular diversion from the Cunningham Highway for adventurous off-roaders.

It was at times a challenging and rough route, usable only by 4WDs and made more difficult by the muddy clay soil that is common to the region.

This is the section at the crest of the gap and was done in order to preserve some of the road's unique 19th century engineering features.