7000 Class Sports Models Debut
Making the climb up the steep Wasatch grade east of Ogden, Utah, required more power. The 7000 Class 4-8-2 locomotives were the solution to pull Union Pacific’s increasingly popular passenger trains on mountainous routes like the Wasatch. The railroad put into service 60 Mountain type locomotives between 1922 and 1925. Until the advent of the 800-class 4-8-4 locomotive in the mid-1930s, the Sports Models remained the mainstay of UP passenger service.