King County:
Downtown Seattle Transit Project, Westlake Construction, 1988
King County:
Downtown Seattle Transit Project tunnel employee tour, 1987
King County:
Tunnel breakthrough, 1988
King County:
Pioneer Station, 1988
King County:
Tunnel-boring machine, 1987
King County:
Pioneer Square Station, circa 1995
King County:
Vashon drain project, 1998
King County:
Industrial Waste Technician Cathy Foss, 1987
King County:
Construction, Fort Lawton Tunnel, West Point, 1991
King County:
Breda bus tunnel, 2001
King County:
Wooden-roofed tunnel with rails, no date
King County:
Denny Way/Lake Union Combined Sewer Overflow (CSO) Control Project tunnel, 2001