The $1.2-billion contract to build a separate addition to Seattle’s Washington State Convention Center has required crews to work under an active downtown street, build components while hanging over sidewalks and the freeway, create fresh approaches to bringing natural light into the building and employ a billboarding construction method to keep everything on schedule.

Pier 58 was to be kept open until a 2022 replacement, but discovery of increased separation has led the city to close the structure.

The Seattle Dept of Transportation expects to determine the bridge’s the structural stability in “late June or early July.”

When GLY Construction expands the Fred Hutchinson Cancer Research Center campus with a three-level robotic parking garage, the largest in the Pacific Northwest.

Call it a birthday. Or an anniversary. Either way, Seattle’s State Route 99 tunnel has hosted public traffic for an entire year.

Sea-Tac International Airport continues to outgrow its landlocked position in King County.