Sea-Tac Airport now home to longest aerial walkway over an active taxiway

Feb 1, 2020

This post contains references to products from one or more of our advertisers. We may receive compensation when you click on links to those products. Terms apply to the offers listed on this page. For an explanation of our Advertising Policy, visit this page.

Seattle-Tacoma International Airport (SEA) made history last week by moving the huge – no, the gigantic – centerpiece of a new record-breaking pedestrian walkway from one part of the airport to another and lifting it, very, very slowly, into place.

The centerpiece is the 320-foot-long center span of the 780-foot-long walkway being built as part of a $968 million International Arrivals Facility (IAF) at Sea-Tac that will double the number of international capable gates and greatly improve the arrivals experience.

A signature feature of the project is an aerial walkway, or bridge, that stretches 780 feet across and 85 feet above an existing taxiway. When complete, the walkway will be the longest structure over an active taxiway.

Arriving international passengers will enter the steel and glass walkway from Sea-Tac’s South Satellite and walk over an active taxiway as they make their way to the new arrivals facility and go through customs. As they walk, they’ll be treated to views of Mount Rainier (on clear days) and the sight of planes as large as 747-400s taxiing underneath the walkway.

Moving a monster

The center span is the size of a football field and weighs 1,565 tons. Port of Seattle officials say that weight is equivalent to 14 blue whales or eight locomotives.

As you might imagine, moving this huge center span across the airport and up into place was no easy job. But between Thursday night and Saturday morning, the job was completed.

Here’s how they did it

The center span of the walkway was prefabricated off-site at the airport’s Cargo 2 area.

Late last Thursday night, when it was time to bring the span over to the International Arrivals Facility construction site, it was moved down the closed center runway very, very slowly – at a speed of 2 miles per hour – with the help of four remote-controlled transporters, called Self Propelled Modular Transporters.

 

Early Friday morning the aerial pedestrian walkway span arrived at its location between the South Satellite and Concourse A. Several hours of site checks and adjustments followed to make sure all the pieces would line up between the already-constructed piers. Then, four strand jacks began lifting the center span into place, at a rate of 20 feet per hour.

As this unique project was underway, lucky passengers – and SEA Visitor Pass holders – were able to watch the span’s progress through the windows from many spots in the concourses and from the South satellite.

The Port of Seattle also kept us up to date on Twitter and on Facebook.

Who will walk over the walkway first and when can you do it?

The new International Arrivals Facility (IAF) at Seattle-Tacoma International Airport may be open and operational by Fall 2020.

An airport spokesman said the first people (other than project testers) to walk over the bridge will likely be elected officials and commissioners. After that, only arriving international passengers on planes arriving at SEA’s South Satellite will have the thrill of walking across the world’s largest structure over an active taxiway.

All photos courtesy of The Port of Seattle.

Chase Sapphire Preferred® Card

WELCOME OFFER: 80,000 Points

TPG'S BONUS VALUATION*: $1,600

CARD HIGHLIGHTS: 2X points on all travel and dining, points transferrable to over a dozen travel partners

*Bonus value is an estimated value calculated by TPG and not the card issuer. View our latest valuations here.

Apply Now
More Things to Know
  • Earn 80,000 bonus points after you spend $4,000 on purchases in the first 3 months from account opening. That's $1,000 toward travel when you redeem through Chase Ultimate Rewards®.
  • 2X points on travel and dining at restaurants worldwide, eligible delivery services, takeout and dining out & 1 point per dollar spent on all other purchases.
  • Get 25% more value when you redeem for airfare, hotels, car rentals and cruises through Chase Ultimate Rewards. For example, 80,000 points are worth $1,000 toward travel.
  • Get unlimited deliveries with a $0 delivery fee and reduced service fees on orders over $12 for a minimum of one year on qualifying food purchases with DashPass, DoorDash's subscription service. Activate by 12/31/21.
  • Earn 5X points on Lyft rides through March 2022. That’s 3X points in addition to the 2X points you already earn on travel.
Intro APR on Purchases
N/A
Regular APR
15.99%-22.99% Variable
Annual Fee
$95
Balance Transfer Fee
Either $5 or 5% of the amount of each transfer, whichever is greater.
Recommended Credit
Excellent/Good

Editorial Disclaimer: Opinions expressed here are the author’s alone, not those of any bank, credit card issuer, airlines or hotel chain, and have not been reviewed, approved or otherwise endorsed by any of these entities.

Disclaimer: The responses below are not provided or commissioned by the bank advertiser. Responses have not been reviewed, approved or otherwise endorsed by the bank advertiser. It is not the bank advertiser’s responsibility to ensure all posts and/or questions are answered.