MONASH FREEWAY UPGRADE – STAGE 2 O’SHEA ROAD
TRAFFIC MODELLING We’re upgrading O’Shea Road to relieve congestion and improve connections to the Monash and Princes freeways
As part of Stage 2 of the Upgrading O’Shea Road Monash Freeway Upgrade, The City of Casey is one of Australia’s When we complete the upgrade, it will: we’re upgrading O’Shea Road fastest growing municipalities. • reduce congestion to three lanes in each direction On a typical weekday, close to 50,000 and extending the road to join vehicles use O’Shea, Clyde and Greaves • improve traffic flow and travel times the Beaconsfield interchange. roads in Berwick, and numbers are • make it easier to travel around your expected to increase. The current road local area and join the freeway infrastructure will be unable to cope • give you better access to residential with increased demand. developments and employment hubs To keep the City of Casey moving we’re in the south-east upgrading O’Shea Road and improving • allow for future public transport routes. connections to the Princes Freeway, to support the development and growth of this booming area. Image above: Clyde Road intersection
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Authorised by the Victorian Government, 1 Treasury Place, Melbourne Poor to very poor operating conditions with delays and queues increasing rapidly. Once queues develop, it will take a significant time for queues to ease resulting in long delays to traffic movements. Modelling Fair to poor operating conditions with delays and queues growing. Traffic flow starting to break down with minor incidents leading to lengthy delays. Traffic flow on O’Shea Road during peak Very good to excellent operating conditions with minimal delays. periods in 2031 – less than 10 years away Parks/reserve Property boundary Road boundary
Not to scale, for illustrative purposes only
Two lanes Four lanes Traffic modelling for retaining O’Shea Road as two lanes (one lane in each direction) showed that the Traffic modelling was undertaken for upgrading O’Shea Road to four lanes (two lanes in each direction) road will not be able to handle the increased traffic demand due to the projected growth in the local area, without dedicated turning lanes. This showed that the road will not be able to handle the increased traffic
resulting in increased congestion and travel times. demand due to the projected growth in the local area, resulting in increased congestion and travel times.
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Four lanes (option 2) Six lanes Traffic modelling was also undertaken for upgrading O’Shea Road to four lanes (two lanes in each direction) with a wider Traffic modelling was undertaken for upgrading O’Shea Road to six lanes (three lanes in each direction) centre median and dedicated turning lanes. This showed there would be inefficient flow of traffic and safety concerns due with dedicated turning lanes. This showed that congestion would be reduced, traffic flow would be improved,
to required merging within short distances at multiple points on the road, due to the proximity of the intersections. and travel times reduced.
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ROAD SAFETY The O’Shea Road Upgrade is being delivered in accordance with the Safe Systems Approach, which aims to improve road safety and achieve the strategic goal of no road deaths and serious injuries. A Safe Systems Assessment and independent Road Safety Audit was conducted on the final design to check for potential hazards, ensure the design was acceptable and that all road users had been considered. Artist's impression of the O'Shea Road and Skyline Way intersection
Methodology Project timeline
Comprehensive independent traffic • using tools such as the SIDRA September 2019 modelling has been undertaken using Network Modelling with VISSM the latest software to understand microsimulation to assess the • Construction contract awarded existing conditions on O’Shea Road different options for O’Shea to CPB Contractors and to identify the impacts the project Road and the impact on the would have on traffic travelling along wider network including future November 2020 O’Shea Road by the year 2031. developments such as the new • Early works commence arterial road through Minta Farm. The assessment methodology Late 2020 included: Traffic modelling plays one part • Major construction commences • conducting traffic surveys of the decision-making process at the Beaconsfield interchange and reviewing baseline existing to determine the final design conditions within the area of the O’Shea Road Upgrade. Other Mid-2021 considerations include available • Major construction commences • assessing design, key adjacent space, constructability and safety. intersections and project impacts on O’Shea Road based on traffic forecasts for By taking all these elements into 2022 the year 2031. account, the six lane design for • Project expected to be complete • using the Victorian Integrated O’Shea Road is considered the Transport Model (VITM) to model safest and the most suitable. transport movements to determine the need to upgrade O’Shea Road
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