Highway 99, also known as the Fraser Delta Thruway south of Vancouver, and the Sea to Sky Highway, the Squamish Highway, or Whistler Highway north of Vancouver, is the major north–south artery running through the Greater Vancouver area of British Columbia from the U.S. border, up Howe Sound through the Sea to Sky Country to Lillooet, and connecting to Highway 97 just north of Cache Creek. The highway's number was derived from the former U.S. Route 99, with which the highway originally connected to at the border. The highway currently connects with Interstate 5 at the American border.