The Roberts Tower on Eighth Street downtown has reached the eleven-floor mark. The last downtown structure to reach eleven floors was the Ninth Street Garage in 2006. Before that, there was the convention hotel addition (completed in 2003) and the Federal Courthouse on Tenth Street (completed in 1999). To find the most recent office building downtown that is eleven floors or higher is One Metropolitan Square (completed in 1989). The last high-rise residential buildings to meet this size were the towers of the Mansion House Center (completed in 1967 -- quite awhile).
How long will it be before the next new downtown building reaches eleven stories? Soon, according to developer Kevin McGowan.