CHICAGO-A $25 million improvement project to Union Station in the downtown, designed to bring back some luster and office tenants to the 87-year-old property, has been completed. Mortenson Construction, hired by Amtrak, upgraded and replaced systems that will allow the historic Great Hall and the eight-story office headhouse to gain air conditioning and modern safety features.

Amtrak owns the station, designed by famous architect Daniel Burnham and opened in 1925. Federal funds were used for the upgrades, which were project managed by Jones Lang LaSalle.

The Great Hall, barely used today by the mostly commuter train customers, lost air conditioning decades ago. Designs for expanding the vacant eight-story headhouse have been through a number of development announcements, but these plans have never materialized.

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