Climate Pledge Arena

Malcolm Drilling’s Contribution to Seattle’s Climate Pledge Arena

Just north of downtown Seattle, Malcolm Drilling was contracted to assist in the construction of a 74-acre state-of-the-art sports complex known as Climate Pledge Arena, a multi-purpose indoor sports arena. The plans for the redevelopment of the new complex included preserving the iconic roof. Malcolm’s crews quickly got to work, installing 82 temporary drilled shafts to support the existing 44-million-pound roof. Additionally, 178,000 square feet of permanent shoring, consisting of soldier piles, lagging, and tie-backs, were utilized to create an excavation that extended 70 feet below the existing grade.

To establish the new foundation that would replace the 57-year-old roof, Malcolm also installed 117 permanent drilled shafts. The new excavation was positioned slightly outside of the existing roofline and encompassed a large new parking garage on the south wall.

Access to the work area was provided by a temporary access ramp. The ramp was constructed using an internal braced shoring system, completed in phases as the excavation progressed.

Malcolm also installed an eductor well system to dewater a tunnel and portal alignment for the construction of an underground trucking entrance underneath the Arena.
Malcolm Drilling