Contractor progresses construction of Kalamunda Road bridge

Pier columns on the project, image courtesy of Main Roads WA.

From the start of 2020 the project team has been constructing the abutments and central piers for the new Kalamunda Road bridge over Roe Highway.

Contractor Georgiou have installed three large pier columns, seven metres high and six metres wide, which will support the new bridge deck. The final concrete pour for the third column is expected before the end of March.

The team will then focus on the remaining bridge support structure works in preparation for beams to be installed towards the end of April.

Over the course of a weekend in April crews will use two large cranes, 500 tonne and 100 tonne respectively, to install 12 beams on the bridge. The beams will measure approximately 32 metre long and weigh 110 tonnes each.

Following the beam installation the bridge deck will be constructed which will involve the tying of more than 100 tonnes of steel reinforcement, pouring more than 360 metres cubed of concrete.

Upon completion the bridge will comprise four traffic lanes, a foot path either side and a central median.

Road works have also progressed along the section of Kalamunda Road east of Roe Highway, with road sealing expected to begin in April 2020. Two Roe Highway southbound lanes, south of Kalamunda Road are also ready for sealing.

The end of April should see Kalamunda Road on the west side of Roe Highway ready for an asphalt surface to be laid.

Works will soon begin on the southbound ramp turning left from Kalamunda Road to Roe Highway southbound, tying these two areas together. This is estimated for completion in May 2020.

Crews have also successfully installed an underpass. The 19 metre long structure will house a Principal Shared Path to separate cyclists and pedestrians. A second underpass will be constructed later this year.

The $51 million Roe Highway, Kalamunda Road interchange project is expected to be completed in early 2021 and will help to ease traffic flow, improve safety and create a more efficient freight route.