A 4.3-mile extension of Sound Transit's light rail network in Seattle opens Oct. 2, pushing the service farther north with the help of two underground stations and 3.5 miles of tunneling.
As Sound Transit continues its ambitious extension of light rail throughout the Puget Sound, continually pushing north, south and east, the opening of the Northgate Link Extension wraps up roughly nine years of construction on the $1.9 billion project that included twin bored tunnels under the University of Washington campus and three new stations, two underground.