Ameren Teams Up With Arcturis to Build New Illinois Corporate Headquarters


St. Louis-based architecture and design collaborative Arcturis releases exclusive details about the recently-developed 46,000 square-foot Ameren Illinois Corporate Center.

St. Louis-based architecture and design collaborative Arcturis (, today released project details about the Ameren Illinois Corporate Center (10 Executive Drive, Collinsville, IL 62234.) The 46,000 square-foot, two-story structure, which accommodates 225 Ameren employees, is the latest ground-up construction project in Arcturis’ portfolio.

The planning of the new headquarters was prompted by Ameren’s need to consolidate and centralize its employees into a central location. Accordingly, Arcturis aligned the new facility with Ameren’s corporate workplace standards including open workspace, private offices, an executive suite, and a multifunctional auditorium.

Arcturis facilitated an integrated approach to the new headquarters, developing all facets including architecture, landscape design, interior design, graphic design, workspace strategy, and branding elements.

“When we were first presented with the site for the new Corporate Center, our design team was inspired by expansive views across the post-agrarian landscape,” said Arcturis Principal Megan Ridgeway. “Preserving the site’s connection with nature was a priority throughout the project.”

The space’s enclosed offices and meeting rooms are organized in a central spine, allowing natural light to illuminate workspaces. Additionally, the multifunctional auditorium features a floor-to-ceiling glass wall connecting occupants to an elevated outdoor patio.

“The Corporate Center has a deep connection to the outdoors,” said Arcturis lead architect Bill Decker. “The extensive amount of glass enabled us to capitalize on our strategy of bringing in as much natural light into the space as possible.”

Arcturis is a nationally-recognized architectural design collaborative headquartered in St. Louis, Missouri. A recognized WBE and leader in the industry for over 40 years, the firm’s award-winning team of architects, designers, and planners excel in understanding the complex design challenges impacting a diverse range of workspaces. For more visit

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