Seymour Whyte triumphant at Civil Contractors Federation National Awards

Seymour Whyte’s Yandhai Nepean Crossing project has been awarded Australia's most prestigious civil award for engineering excellence by the Civil Contractors Federation (CCF) at the 2019 National Earth Awards held in Canberra.

Seymour Whyte team with their National CCF Award

The project was declared winner in Category 5, for projects with a value of $30M - $75M, emerging triumphant against impressive competition from other projects across the country.

Seymour Whyte’s Swan Street Bridge upgrade team also represented Victoria and the company as a finalist in the same highly-competitive category at the awards night.

The iconic Yandhai Nepean bridge was opened in October 2018. Located in the western Sydney suburb of Penrith, New South Wales, the bridge has provided a safe and enjoyable means of crossing the Nepean River for over 100,000 people in only a few short months after opening.

Yandhai Nepean Crossing, Penrith, NSW

Steve Lambert, Regional Manager - Southern congratulated both teams who worked diligently on these challenging projects.

“It is an honour to receive the National CCF Earth Award for Engineering Excellence,” he said.

“I congratulate both teams – all our staff, suppliers, subcontractors, designers, architects and our clients as both projects have certainly made their mark in shaping our cities and communities; and have become destinations in themselves for what is a triumph of engineering”, he said.

The Nepean River is home to one of the world’s longest straight, natural river rowing course; and maintaining access to the course was a high priority for the project.

Mr Lambert explained, “Seymour Whyte identified early in the Expression of Interest stage of the Yandhai Nepean Crossing project that a legacy to the community would be to build a bridge that facilitated current and future river activities.”

“We are confidently taking on the most challenging, complex projects and finding innovative and creative solutions.”

At 284m long with a 200m clear span, the 800-tonne steel Warren truss bridge was built by assembling pre-fabricated sections on one side of the river. The sections were then then progressively launched over temporary piers in the river using a ‘node-by-node’ incremental launching technique.

It was the first time that this method has been used in Australia. Seymour Whyte worked with Freyssinet, a VINCI sister company that specializes in bridge launch construction methods, to implement this new method.

Yandhai Nepean Crossing construction and bridge launch

In delivering the Yandhai Nepean Bridge, Seymour Whyte has once again demonstrated it combines the agility of a Tier 2 with the resources and expertise of a Tier 1 to build, at 200m, the longest clear span shared path bridge in the southern hemisphere.

Project Manager Greg Anderson said, “Our [Nepean] team worked together and demonstrated very high-level problem-solving skills and technical excellence. They identified creative solutions to overcome several engineering challenges associated with steel fabrication, launch methods, temporary works and piling.”

“Together with logistical complexities, site constraints, temperature variations exceeding 40ºC, rotating coordinate values [mainly the y & z components for the trial fit-out where the truss was rotated at 90 degrees], meeting these challenges required the team to design bespoke temporary works, and equipment for testing and launching the bridge”.

Mr Anderson added, “It is through the collaboration and communication with the assembled team of experts that our team overcame these challenges.”

“I thank the whole team for their commitment to safety, timely delivery and in developing the innovative solutions to deliver this landmark project for the local community.”