The Cunningham Highway is a key interstate freight corridor that forms part of the Sydney to Brisbane inland corridor. It is part of the National Land Transport Network, and plays a signiﬁcant role in transporting people and freight to and from Brisbane and the Port of Brisbane from the west. It records 2,700 heavy vehicle movements per day.
With the construction of the Port of Brisbane Motorway, and the recent upgrading of the Gateway Motorway South and the western Ipswich Motorway, the Cunningham Highway at Amberley is one of the few remaining ‘pinch points’ for interstate freight along the western corridor.
The identiﬁed ‘pinch point’ is the intersection of the Cunningham Highway and the Ipswich Rosewood Road. It results in high levels of congestion, particularly during
the morning peak. Preliminary modelling suggests that the current direct cost of congestion at this location is approximately $45 million per year.
The material impacts of the problem include declining levels of service, which reduces freight efficiency and through-traffic movements, as well as potentially limiting major developments planned for the area.