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.
The intersection does not meet current design standards, resulting in signiﬁcantly higher than average crash rates. These problems are likely to worsen in the face of the signiﬁcant population and freight growth expected in the region.
The initiative involves upgrades to a 4.75 km section of the Cunningham Highway between Warwick Road at Yamanto and Ebenezer Creek, including the Amberley Interchange. Speciﬁc capital works include a major off-line deviation with grade separation for the Amberley Interchange, additional capacity at the Amberley Interchange off-ramp, and a new service road between Coopers Road and Yamanto.
Proponent to complete business case development (Stage 3 of Infrastructure Australia’s Assessment Framework). The business case was submitted to Infrastructure Australia for evaluation in 2017 and then withdrawn by the Queensland Government in July 2018.