In order to improve safety for pedestrians and cyclists the current roundabout at the Mirrabei Drive/Gundaroo Drive/Anthony Rolfe Avenue intersection is to be replaced with a signalised intersection. There are three main active travel community routes and an increasing demand for pedestrian and cyclist access to the nearby Yerrabi Pond District Park which have prompted the need to replace the existing roundabout with a safer alternative.
The project will remove the roundabout, widen the four vehicle approaches to the intersection and provide a four way signalised intersection with full pedestrian provisions. The project also includes the construction of a second southbound lane on Mirrabei Drive from Paul Coe Crescent to Gundaroo Drive. This lane provides the additional capacity that is required during the morning peak for vehicles turning right onto Gundaroo Drive.
Construction is expected to be completed in the third quarter of 2018.
There will be reduced speed limits within the work zones to provide a safe working environment during construction.
Indicative staged traffic arrangements are shown in the below images. Conceptually the staging will involve:
Stage 1 – Installation of concrete barriers and works to widen the Anthony Rolfe Avenue median and corners of the intersection. The roundabout configuration and operation will be as it is prior to works commencement.
Stage 2 – Removal of the roundabout and widening works to the Mirrabei Drive, Anthony Rolfe Avenue and Gundaroo Drive medians. Island construction adjacent to the left turn lane from Gundaroo Drive into Mirrabei Drive. The roundabout configuration is as it is prior to works commencement except there is one less through lane westbound through the roundabout on Gundaroo Drive.
Stage 3 – Operation of the intersection under temporary traffic lights while final median and island construction works occur. There will be a single lane on each approach to the intersection.
Note there are numerous projects on arterial and major roads in Gungahlin that are scheduled to be under construction at the same time and the ACT Government would like the thank motorists for their patience while these important works are undertaken.