The depot is a small square brick structure constructed during the Amtrak era that is located near a Canadian Pacific Kansas City yard office. The office occupies what was formerly the Portage passenger depot, served by the Chicago, Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road) prior to the creation of Amtrak. There are no station staff in Portage.
In October 2011, Lamers Bus Lines began offering a daily stop at the station, with service between Madison and Wausau.[2] This service was transferred to Van GalderCoach USA in 2022.