The northern portal, accessible to buses at street level from Olive Way, and from Interstate 5 via an express lane ramp, was the former Convention Place station at the intersection of 9th Avenue and Pine Street near the Washington State Convention Center. Until its closure in 2018, Convention Place was the only bus-exclusive station in the tunnel, and consisted of four sheltered platforms in a sunken, open-air layover space below street level. Buses entered the tunnel from 9th Avenue and passed under the historic Camlin Hotel, before joining the University Link Tunnel used by light rail trains headed north for three blocks under Pine Street to Capitol Hill station.