The redevelopment plan calls for the demolition of the existing Millennium Hotel structure and the construction of a 1.3 million-square-foot mixed-use complex. The project is designed to introduce vibrant residential, commercial, and cultural spaces at a site adjacent to the Gateway Arch grounds.
Key Features of the Redevelopment
- Developer: The Cordish Companies, chosen by the Gateway Arch Park Foundation.
- Demolition + New Construction: Demolition began in November 2025 and has moved into its final phase to prepare the site for redevelopment.
- Mixed-Use Development: Plans include residential, office, retail, public gathering spaces, and cultural amenities.
- Residential Tower: A proposed 41-story high-rise called Riverline Apartments would include 585 units.
- Office and Retail Space: The proposal includes a Class A office building and a food hall.
- Public + Cultural Features: A riverfront amphitheater and a potential home for the Gateway Arch National Park archives are also envisioned.
- Connectivity Goal: The design aims to strengthen pedestrian access between the Gateway Arch grounds and downtown St. Louis.
Project Timeline and Status
Gateway Arch Park Foundation has closed on the purchase of the 4.2-acre property. Demolition began in November 2025, and the project has entered its final demolition phase. The Foundation continues to work with The Cordish Companies on early plans for a $670 million, 1.3 million-square-foot mixed-use redevelopment. Specific components and timelines may change as the project advances.
Revitalizing Downtown St. Louis
City officials and development partners view the Millennium Hotel redevelopment in St. Louis as a catalyst for downtown revitalization. By combining residential growth, modern office space, and cultural infrastructure, the project is intended to attract both businesses and residents while enhancing the public’s experience near the Gateway Arch.