The D'Aguilar Highway's highest elevation along its length is 527 m just north of Yarraman, and the lowest point is at 26.8 m just west of Caboolture.

[citation needed] In January 2009, the Department of Transport and Main Roads published details of the preferred design for a bypass of the Kilcoy township.

[citation needed] A project to provide wide centre lines near Wamuran, at a cost of $12 million, was completed in September 2022.

[8] A project to provide safety improvements between Sandy Creek and Kilcoy, at a cost of $19 million, was completed in mid 2023.

It continues east as Lower King Street, crossing the railway line and reaching a bridge over the Bruce Highway, where it ends.

[3] A project to upgrade signals and improve intersections on this road, at a cost of $7.5 million, was in construction in July 2022, with most sub-projects already completed.