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Condo complex parking deck collapses

Residents of the Sienna condo complex at 1718 Oak St. have been forced to evacuate their homes after a parking deck on the site partially collapsed Friday night.

Sienna

A Sienna construction site webcam captures the collapse scene.

City officials say the top level of the parking deck collapsed, sending a 70 foot x 20 foot section of the parking ramp falling three stories to the basement level.  And a secondary collapse occured shortly after police and fire units arrived on the scene.

City structural engineers determined the parking structure and the adjoining condominium building were unsafe and ordered a complete evacuation.

Residents of the 55 condo units were relocated. Limited access with fire department escorts was provided to allow residents to collect their personal belongings.

A fire fighter suffered a minor hand injury and several cars were damaged.

The cause of the collapse is under investigation. The Chicago Tribune reports that Tom Roszak, principal owner of Roszak/ADC, which developed the parking deck and condominiums, said the top level of the parking deck was being landscaped and that may have been a factor in the collapse.

The Sienna complex is being built in several phases, and the parking garage and the evacuated units reportedly were completed about a year ago.

Mr. Roszak told the Tribune he expects residents can return in about a week, but the parking garage, used by residents and employees of an office building across the street, will take much longer to re-open.

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