Seymour Whyte commended for Narellan Road upgrade

Seymour Whyte has been commended by the Australian Steel Institute for the Narellan Road Stage 2B upgrade cable stayed pedestrian bridge over the Hume Motorway at the 2018 NSW/ACT Steel Excellence Awards.

Five award categories for the night highlighted large projects over $5 million, small projects under $5 million, steel clad structures, engineering projects, and the young designer/detailer/tradesman encouragement award.

Seymour Whyte has been commended by the Australian Steel institute for the Narellan road Stage 2B upgrade cable stayed pedestrian bridge over the Hume Motorway at the 2018 NSW/ACT Steel Excellence Awards.
Pictured: (left to right): Seymour Whyte’s James Waters, Paul Stathis and Frank Callanan, and Arcadis’s Jaco De Vry, David Talbot, Annie Zagninski and Przemo Tomczyk. Image credit: Seymour Whyte

Projects were graded on their overall design merit, construction efficiency, environmental sustainability and buildability.

The project was designed by Arcadis and delivered for NSW Roads and Maritime Services. A major feature of the project was the new shared path bridge which provided connectivity for pedestrians and cyclists between Narellan and Campbelltown.

Seymour Whyte Project Manager Scott Calleja said the commendation award acknowledged the project team’s collaboration and innovation on a vital infrastructure project.

“The original construction methodology included the use of temporary towers in the median of the Hume Motorway for the erection of the steel deck segments, prior to installation and tensioning of the cables.

“This methodology would have required reduced speeds and roadwork zones on the Hume Motorway for up to 15 months during construction and disrupted traffic on a key transport link in greater Sydney,” he said.

“Working with RMS, Arcadis and a range of stakeholders, we developed an innovative design and construction methodology without the use of temporary supports in the median—a bespoke segmental cantilever erection methodology that enabled us to maintain existing speeds on the motorway, meet the construction program, and cause minimal disruption to one of Sydney’s busiest transport corridors.”


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