remained closed until 2007 when a new sponsor named Woodward announced that they would take ownership. Plans for that then fell through in late 2007 and the park continued to stay closed until it was re-opened with a new sponsor as "Plan Nine" in April 2009. The park closed once again in 2017. References External links Powerplex STL Website Buildings and structures in St. Louis County, Missouri Tourist attractions in St. Louis County, Missouri 2003 establishments in Missouri Sports venues in St. Louis