Matagarup Bridge nearing completion in July 2018
|Carries||Pedestrian and cycle traffic|
|Total length||370 metres|
|Height||72 metres at its highest point|
|Longest span||160 metres|
|Clearance below||8 metres|
|Constructed by||York Civil/Rizzani de Eccher joint venture|
|Construction start||November 2015|
|Construction cost||$91.5 million (or $247 thousand per metre)|
|Opened||14 July 2018|
Matagarup Bridge is a suspension pedestrian bridge crossing over the Swan River in Perth, Western Australia. Situated approximately half-way between Heirisson Island and the Goongoongup Bridge, it provides pedestrian access between Burswood and East Perth. The bridge connects visitors to the Burswood Peninsula, including the Perth Stadium, with public transport and car parks in East Perth and the Perth central business district.
In February 2014, the government called for expressions of interest for the design and construction of the bridge. Four parties were shortlisted to bid; a Decmil/OHL joint venture, Freyssinet, Georgiou, and a York Civil/Rizzani de Eccher joint venture with the latter awarded the contract. Western Australian company BARDAP Hydraulics was contracted to design, manufacture, and commission the high pressure jacking system which was deployed to install the deck sections.
Due to delays and issues, Malaysian-based Toyota Tsusho, which was sub-contracted to manufacture the bridge components, had its contract terminated; the contract was re-tendered and was won by Western Australian company Civmec.
In November 2017, the Government announced that the bridge would officially be named "Matagarup Bridge", where "Matagarup" is the Nyungar name for the whole area - waters included - around Heirisson Island, and which means "place where the river is only leg deep, allowing it to be crossed". It had previously been referred to as the Swan River Pedestrian Bridge.
The bridge's two main arches were hoisted into place in early May 2018. Matagarup Bridge consists of three spans, each suspended from arches by cables. Each of the three deck sections was craned onto high pressure jacks, connected to flow control manifolds and electric hydraulic power units. The jacking system enabled the suspension cables to be connected to the respective bridge section, and then lowered with precision control to tension the cables. This work was completed in late June. Testing of the bridge's LED lighting occurred on 18 June. Concrete pouring of the bridge deck was completed on 1 July. On 4 July, Premier Mark McGowan, Transport Minister Rita Saffioti and other officials, as well as bridge workers, walked across the bridge. From 7–9 July, hundreds of volunteers walked across the bridge so that engineers could assess the movement of the structure and tune the bridge's mass damper to minimise vibrations.
The structure is designed as a 3-span steel cable-stayed bridge, with the two piers in the river bed. The bridge maximum height of 72 metres (236 ft) is reached in midspan of the central span. The length between the abutments is 400 metres (1,300 ft), with a 160-metre-long (520 ft) central span. The total length of the pedestrian crossing is 560 metres (1,840 ft), which includes a 100-metre (330 ft) ramp at the East Perth end to route pedestrians away from nearby residential areas.
The bridge structural shape resembles two flying swans, with the bridge arches representing the wishbones, but it can also be seen as a swimming dolphin, a Wagyl serpent or a ribbon. 900 metres (3,000 ft) of multicolour LED lighting cover the bridge.
Design modifications were made to allow bridge climbing as a tourist attraction. The modifications include the addition of handrails along the wishbones and a viewing elevated platform. The structural design already included stairs for bridge inspection and maintenance works. The addition of a zip-line from the top of the bridge to the ground is also being considered.
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