A complete renovation of the downtown Chicago terminal station will rehabilitate the existing historic waiting rooms, replace the roof assembly while maintaining the green roof, and will replace the pedestrian tunnel in the park. A new 'pop-up' entrance in Grant Park will add a new access stair case and elevator and add an ADA-compliant ramp connecting to the pedestrian bridge. The pedestrian tunnel under Michigan Ave will be waterproofed and a new elevator will be added to the Jackson Blvd platform. The scope of work includes rehabilitation of the stair enclosures and elevator west of Michigan Avenue, replacement of the platforms, new full-length platform canopies, heated warming shelters, construction of a new vendor space at lower level, and all new mechanical, electrical, and plumbing throughout the station.