Published - October 29th, 2021
Mammoet presented the successful completion of the transport and lift of Seattle-Tacoma International Airport’s newest expansion - an elevated pedestrian walkway for the future international arrivals facility. Part of the airport’s $968 million expansion, the new bridge is only the second walkway in the world with suitable clearance for a Boeing 747 to taxi beneath.
Once transported into position under the existing V-piers, erection crews used four 816 t (900 US-ton) steel frames that utilized a strand jack system. This was the first time these frames from the Netherlands had been used in the United States. With just a few centimetres of tolerance for a precise fit, the bridge span was carefully hoisted into its final position, 22 m (72 ft.) from the ground, before being welded into place.
After nearly eight years of planning, design, and construction, the installation has created, at 274 m long, the world’s longest pedestrian bridge span over an active airport taxi lane. In 2020, Mammoet’s team completed the installation of the first airside bridge in Hong Kong as well. The international arrivals facility is currently open and in use. Alongside other improvements planned for the airport, the walkway will help double the airport’s international passenger capacity to 2,600 per hour.
Travis Wilcox, Mammoet Project Manager and presenter at the conference shares: “It was truly honor to represent Mammoet and receive the Rigging Job of the Year award in our respective category. The level of competition was high, yet this is another example of Mammoet's ability to deliver world class service. I was very fortunate to be a part of an extraordinary team, which made the project a success. Special thanks to everyone involved.”
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