48 - The Roadbuilder

Georgiou was awarded the design and construction contract for the $28.7 million Karel Avenue Upgrade for Main Roads WA in June 2019, following a competitive tender process.

Overview• Widening Karel Avenue bridge over Roe Highway to

create a dual carriageway, connecting at the two-lane dog-bone roundabouts for on and off-ramps

• Extending Karel Avenue bridge across the freight railway line located immediately south of Roe Highway to facilitate construction of the Thornlie-Cockburn Link as part of METRONET

• Extending the existing Karel Avenue underpass to accommodate the widening

• Modifying the existing Training Place intersection to left in and left out to promote safe access

• Widening of Karel Avenue between the Farrington Road intersection and Roe Highway to four lanes

• Widening of Karel Avenue between Roe Highway and the Berrigan Drive roundabout to a four-lane dual carriageway, including modifications to the roundabout approaches to enable two lanes in each direction.

Project UpdateConstruction updateUpgrade works are progressing well at the interchange:• Traffic is now on the recently widened lanes on the

new southbound side of Karel Avenue, while the new northbound Karel Avenue lanes and shared path are being constructed.

Karel Avenue UpgradeKarel Avenue Upgrade

• A temporary roundabout is in place at Berrigan Drive to enable the remaining future southbound side of the intersection, including the shared path, to be completed.

• Extensions are underway to the northern and southern bridge abutments at the Karel Avenue bridge over Roe Highway.

• Widening and re-asphalting the Roe Highway westbound off-ramp, and Roe Highway eastbound on-ramp.

Construction Completed to DateKarel Avenue wideningTraffic is now travelling on the recently widened Karel Avenue heading south, while the new northbound Karel

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The Roadbuilder - 49

Avenue lanes and shared path are being constructed. The widening of Karel Avenue between Farrington Road and the Roe Highway underpass is now complete.

Georgiou is progressing through the on/off-ramp changes with the new Karel Avenue on-ramp to Roe Highway westbound now open, resurfacing of the Karel Avenue on-ramp to Roe Highway eastbound now complete and the Roe Highway westbound off-ramp now finish. The final works involve the widening of the Roe Highway eastbound off-ramp to Karel Avenue which is set for completion at the end of 2020.

Karel Avenue bridge over Roe Highway Works to duplicate the lanes on the Karel Avenue bridge over Roe Highway are underway, with the northern and southern bridge abutment extensions are progressing well. The team will install four bridge beams – which are manufactured out of Georgiou’s precast yard – in June which will see the closure of Roe Highway for the weekend. The works associated with the Karel Avenue bridge over the railway are underway with completion of piling to the first half of the bridge. These works will see the completion of the first half of the bridge in late 2020, with the second half lifting and completed by mid-2021. Berrigan Drive roundabout upgradeThe recent closure of Berrigan Drive enabled construction of the western portion of the upgraded Berrigan Drive and Karel Avenue roundabout. Traffic is currently travelling on a temporary roundabout to enable the remaining future southbound side of the intersection, including the shared path, to be completed.

Works Underway and Commencing Soon• Landscaping and re-asphalting the Principal Shared

Path adjacent to the Roe Highway westbound off-ramp.• Resurfacing the Training Place and Karel Avenue

intersection. • Switching traffic to the duplicated northbound Karel

Avenue lanes between Farrington Road and the Roe Highway underpass.

• Duplicating both southern and northern Karel Avenue tear-drop roundabouts.

Timeline• 30 November 2017: Call for expressions of interests

from industry• 1 May 2018: Issue request for proposals to shortlisted

applicants• May 2019: Contract award• July 2019 to mid-2021: Construction

Benefits• Improve traffic flow and access to Kwinana Freeway and

Roe Highway• Remove bottleneck on the approach to Jandakot Airport

Precinct• Support development of Jandakot Airport precinct• Complement other major road upgrades: Murdoch Drive

Connection project page, Kwinana Freeway Northbound Widening, and WA’s first Smart Freeway

FundingThe $28.7 million project is funded by the State and Commonwealth Governments as part of a $2.3 billion package of road and rail infrastructure works.

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50 - The Roadbuilder

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The Roadbuilder - 51

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