NAR Haul Road Overpass - Pavement Design

Client: BG&E Resources

Completed: October 2023

BG&E Resources contracted Civil Sciences and Engineering to undertake a pavement design on a proposed haul road which forms part of Rio Tinto’s Greater Brockman Operations. The new haul road will pass over a concrete arch structure constructed over the existing Northern Access Road (NAR), which will limit access to oversize vehicles. To overcome this, an Oversized Over Mass (OSOM) bypass road around the concrete arch tunnel will be constructed with an at grade gate-controlled crossing over the new haul road. The existing Northern Access Road will require reinstatement once the concrete overpass is constructed. In addition, a new Tray Change Out Pad is proposed to the south-east of the bypass road which will be used to change out haul pack tray bodies.