Old Belair and James Road Junction
About the project
The Australian Government has committed $20 million to upgrade the Old Belair Road and James Road junction and Old Belair Road (between Sheoak Road and Blythewood Road). The project is expected to support around 80 full time equivalent jobs throughout the construction period.
The proposed treatments for the upgrade include:
- construction of a single lane roundabout, including a northbound bypass lane on Old Belair Road travelling towards Adelaide, which separates the movement with traffic turning right out of James Road;
- a new pedestrian and cycle crossing to assist safe access to and from the Randell Park walking trails;
- earthworks and construction of retaining walls;
- new and upgraded drainage, including new kerb and gutter;
- new asphalt surfacing and line marking; and
- LED lighting for the extent of the works.
The proposed design provides an outcome that:
- improves safety for all road users;
- enables improved safety for all traffic movements, including turning movements;
- minimises travel time through the provision of improved right turn provisions from both James Road and Old Belair Road;
- reduces queuing on James Road in peak periods;
- provides new pedestrian and cyclist crossing facilities, connecting to Randell Reserve; and
- enables road users travelling north on Old Belair Road to bypass the roundabout, thereby minimising travel times and queues, especially in the morning peak.
In February 2021, the Department for Infrastructure and Transport (the Department) released the proposed concept designs for this project, along with the Russell Street / Main Road / Sheoak Road Junctions upgrade.
The designs were developed in response to feedback received from the community during the early 2020 planning study phase of consultation.
Consultation on the concept design commenced on 25 February 2021 and concluded on 7 May 2021.
Key changes being made to the Old Belair and James Road junction design in response to community feedback include:
- decreasing the size of the roundabout to minimise the overall footprint of the project; and
- reducing the impact on surrounding vegetation.
Based on the design being 70% complete, approximately 147 native trees are identified for either pruning or removal. This includes approximately 42 Grey Box trees. These impacts will be managed in accordance with legislative requirements.
Efforts will continue to be made throughout the design and construction phase to reduce impacts to vegetation where possible.
The Department will also continue to liaise with all stakeholders to identify opportunities for offsetting the vegetation impacts through the development of a landscape plan.
The inclusion of traffic lights was considered but determined not an appropriate solution. Traffic modelling indicated traffic lights at the junction would increase average road user delays. They would also increase the risk of rear end crashes on Old Belair Road as a result of queueing on Old Belair Road, particularly to the south in the morning peak. The roundabout is not expected to increase traffic using Old Belair Road.
The design includes improved access for walking and cycling, including upgrades to allow cyclists and pedestrians to cross Old Belair Road and connect to the trails within Randell Park Reserve.
For further detail download a copy of the proposed concept design for the Old Belair and James Road Junction – Artist’s Impression Only.
Construction work will be staged to minimise the impact on road users during the works.
Construction on the Old Belair and James Road junction is planned to start before the end of the year and be complete in the second half of 2022, weather permitting.