Territory and Municipal Services


Barton Highway/Gundaroo Drive/William Slim Drive intersection signalisation

Project background

Roads ACT has received a large number of submissions from the public regarding the congestion regularly experienced at the Barton Highway, Gundaroo Drive and William Slim Drive intersection. As the population of the Gungahlin region continues to grow, the road network connecting Gungahlin with Belconnen is becoming more congested, especially during the peak traffic periods.

The Transport for Canberra program, which has a focus on public transport infrastructure, identified the William Slim Drive/Gundaroo Drive corridor as a location where the installation of bus priority measures are required.

Aerial view of the Barton Highway roundabout.

Image 1: Aerial view of the Barton Highway roundabout, adjacent to Crace. (Click to view larger image)

Scope of works

The Barton Highway/Gundaroo Drive/William Slim Drive intersection will be upgraded to improve safety and traffic flow, notably to balance and improve flows in the morning and evening peak traffic periods.

The roundabout will be upgraded to incorporate additional lanes on all four of its approaches and through the intersection, and will introduce signalisation of the intersection. The traffic signals will be coordinated to control traffic flows through the intersection and to balance flows of approaching traffic according to the time of day. Traffic travelling in the peak directions will be provided with more priority than under the current arrangements. This will allow for more vehicles to be moved through the intersection during these periods.

The intersection improvements will also provide on-road improvements for cyclists passing through the intersection on three approaches to the intersection; cyclists approaching the intersection on Barton Highway from the west will utilise a new shared path bridge, parallel to the existing road bridge.

The improvements will also include a bus priority lane through the roundabout in the east/west direction linking the Gungahlin and Belconnen town centres.

This project will be of particular benefit to Crace residents as it will improve traffic flow along Gundaroo Drive, enabling improved egress from Crace onto the arterial road network. It will also improve traffic flow in the afternoon peak for Gungahlin residents returning home from work who currently can be delayed on the approach to the roundabout.

More information is available in a fact sheet of the Barton Highway/Gundaroo Drive/William Slim Drive roundabout upgrade.

Aerial view of the Barton Highway, Gundaroo Drive and William Slim Drive intersection upgrade. The image details the key improvements as part of the upgrade. New lane configuration and traffic signals on all four approaches to the roundabout will be included in the upgrade. New bus priority lanes and on road cycle lanes will be provided on the approaches from Gundaroo Drive and William Slim Drive as well as an on road cycle lane on Barton Highway south. The upgrade will also include construction of a new shared path bridge which includes new connections to the existing path than runs alongside Ginninderra Creek adjacent to Giralang.

Image 2: Aerial view of the Barton Highway, Gundaroo Drive and William Slim Drive intersection upgrade. (Click to view larger image) 

Aerial view of the Barton Highway, Gundaroo Drive and William Slim Drive intersection arrangements. The image details the turning movements and location of traffic signals on the roundabout and its approaches. All four approaches to the roundabout will become three lanes. There will also be traffic signals on all four approaches as well as traffic signal within the roundabout.

Image 3: Aerial view of the Barton Highway, Gundaroo Drive and William Slim Drive intersection arrangements. (Click to view larger image)

The video transcript (there is no sound just the captions):
  • A comparison of traffic flow in the morning peak at the Barton Highway and Gundaroo Drive/William Slim Drive intersection before and after upgrade work

Video 1: A comparison of traffic flow in the morning peak at the Barton Highway and Gundaroo Drive/William Slim Drive intersection before and after upgrade work

The video transcript (there is no sound just the captions):
  • A comparison of traffic flow in the afternoon peak at the Barton Highway and Gundaroo Drive/William Slim Drive intersection before and after upgrade work.

Video 2: A comparison of traffic flow in the afternoon peak at the Barton Highway and Gundaroo Drive/William Slim Drive intersection before and after upgrade work.

Community consultation 

The community and users of this busy intersection will be kept informed of works through electronic roadside signage as well as other preferred communication methods identified by the community including website information and updates in the ACT Government's weekly email newsletter.

Project funding

The Barton Highway / Gundaroo Intersection Signalisation project  has been funded under the Federal Government’s Roads to Recovery Program.

Construction

Construction works are anticipated to commence at the intersection in November 2015 and take 12 months to complete.

Traffic impacts

Construction works commenced at the intersection in November 2015 and is anticipated to take 12 months to complete.

Initial works are being carried out in the median approaches, verges and in the centre of the roundabout, where road barriers have been installed to undertake the construction safely. A 40 kilometre per hour speed limit will be in place on all approaches to the intersection to facilitate safely for all road users. The reduced speed limit will be in place for the duration of the construction.

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 to thank motorists for their patience while these important works are undertaken.

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