Transport Canberra and City Services


Cotter Road duplication stage 2

Cotter Road is a key arterial road connecting the Molonglo Valley and Weston Creek to the rest of Canberra. The developments in the Molonglo Valley are expected to increase traffic on this important link in the road network. The Government has already completed a number of major upgrades to the road, including the signalisation of the Lady Denman Drive and Cotter Road intersection.

The current works underway on Cotter Road are duplicating the road from west of the Tuggeranong Parkway to east of Yarralumla Creek.

The completed east and westbound carriageways will have two 3.5-metre lanes and a 2.5-metre on‑road cycle lane, with the new westbound carriageway constructed north of the current single lane road.

The project will also include construction of a median to accommodate right turn lanes at the intersections that provide access to the Forest Park Riding School/horse paddocks and the Yarralumla Woolshed/Canberra Equestrian Park facilities. This will also allow a third lane to be added to each carriageway if required in the future.

A three metre wide shared path will also be constructed on the south side of Cotter Road, connecting the existing paths along Yarralumla Creek to Kirkpatrick Street, with connections to the abutting residential streets of Curtin.

This upgrade will significantly increase traffic capacity and safety on this section of road and will complete the duplication of Cotter Road between Adelaide Avenue and John Gorton Drive.

Noise walls will be installed adjacent to the Curtin residential area and the ACT Equestrian Park to mitigate traffic noise once the duplicated section of road is operational.

The ACT Government committed $28.9 million during the 2016-17 ACT Budget.

Construction is underway and is expected to be completed in February 2018.

Traffic impacts

Construction will be completed on the new eastbound carriageway first including the new bridge over Yarralumla Creek. Initial works will be undertaken on the northern side of the existing road and will be carried out with minimal impact to traffic.

Temporary traffic control measures are in place to provide safe pedestrian, cyclist and horse and rider access across Cotter Road during demolition and reconstruction of the existing road bridge.
Safe crossing, controlled by flagmen, will be in place during work hours. Outside the construction period access will be available over and beside the Yarralumla Creek.

The second stage of construction will focus on strengthening the existing bridge over Yarralumla Creek. Traffic will be diverted on to the new carriageway while this work is carried out.

Reduced speed limits will be in place for the duration of construction.

Progress of duplication

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We acknowledge the Traditional Custodians of the ACT, the Ngunnawal people. We acknowledge and respect their continuing culture and the contribution they make to the life of this city and this region.

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