Kiener Plaza is likely to be the first portion of the Gateway Arch project to be completed.
Those familiar with the project say it's slated for completion in the fall of 2013.
The plan for the Plaza includes a performance pavilion, an eating venue, seating, and water features.
Walter Metcalfe with the CityArchRiver 2015 Foundation, the group that sponsored the design competition, said work on Kiener Plaza can move forward more quickly because it's not part of the National Park.