Construction has begun on foundations for Wolf Point South, also known as Salesforce Tower, and will rise 813 feet over 58 stories. Addressed as 333 W Wolf Point Plaza in River North, the tower will stand at the three-way fork of the Chicago River, with the other two towers, Wolf Point West and Wolf Point East, sitting to the sides of it. Permit filings show that the foundation permits were issued in April, approving the construction of the caissons and foundation structure up to grade level, including the below-grade parking. Permits for Phase 1 of construction, covering foundation construction and tower crane installation and use, were issued this past week. Full building permits have been filed for the tower portion of the project, but await approval. Wolf Point South, LLC is the owner behind the applications.