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#ProjectExplained - Lifting the world’s second airport walkway with clearance for a Boeing 747

Mammoet receives SC&RA Rigging Job of the Year Award 2021 in the $750,000-$2 million (US) category.

Our team 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 900-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 approximately 1.5 inches of tolerance for a precise fit, the bridge span was carefully hoisted into its final position, 22m (72 ft.) from the ground, before being welded into place.

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#Mammoet #Seattle #AirportBridge "

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