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Sound Transit breaks ground on $449M Bellevue light rail base

There will be 14 service bays and one wash bay in the operations and maintenance building.

A future transit-oriented development of 1.1 million square feet is planned.
Sound Transit broke ground this week on the $449.2 million Operations and Maintenance Facility East, along 120th Avenue Northeast in Bellevue’s Spring District.

The 28-acre site will be the base for maintaining and storing 96 light rail vehicles for regional Link expansions to Northgate, Lynnwood, Federal Way and Redmond.

There will be 14 service bays, a wash bay, shops, locker rooms and offices in a 131,200-square-foot building. A separate 34,000-square-foot building will be used by trackway and station maintenance staff.

About 250 full-time employees will work in both buildings.

Sound Transit has set aside 6.5 acres of the site for 1.1 million square feet of future mixed-use transit-oriented development after the operations facility is finished in December 2020. The agency plans to issue a request for proposals for a master developer by year end.

As part of the design-build contract for the facility, Hensel Phelps will deliver a temporary bike and pedestrian trail connection and identify portions of the construction staging area that can be developed for transit-oriented uses.

Last fall Hensel Phelps awarded a $28 million design-build subcontract to Granite Construction for demolition, grading, utility installation, pedestrian trail construction and asphalt paving. Granite began that work in December.

VIA Architecture is the designer.

The Eastside facility will supplement Sound Transit’s existing operations and maintenance base across Airport Way South from the old Rainier Brewery in Seattle. That base is expected to reach its capacity of 104 vehicles in 2020.

Sound Transit says Link light rail will expand from 20 miles today to 58 miles by 2024, with longer and more frequent trains. The fleet of light rail vehicles will expand from 62 to 214 during that time.


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