WINONA, Minn. – Crews have demolished the old Froedtert malthouse at the Union Pacific railyard on West Third street. The brick structure, built in 1905, has been vacant nine years. That was when malt-producing processes were shifted to another building with upgraded equipment. Demolition hasn’t gone easily, plant manager Steve Kukla told the Daily News. The structural steel simply won’t budge, he said: “The building was built, that’s for sure.” The already failing roof, however, wasn’t a problem. In fact it was the roof that necessitated the demolition for safety reasons, Kulas said.  Unaffected by the demolition are the towering landmark Froedtert barley elevators, part of a century of continuously making malt for beer, whiskey, milk and cereal for the food and beverage industry. Since 2008 the Froedtert facility has been owned by Malteurop of France. The company has 15 Winona employees.