Freight transportation management firm Hub Group plans to build a new office property adjacent to their existing corporate headquarters in Oak Brook, Illinois. The additional structure will double the company’s footprint from the existing 135,000 square feet of space they now occupy at 2000 Clearwater Drive.

According to the Chicago Tribune, construction on the new building should conclude by next September. An underground walkway will connect the two structures that, once completed, will have the capacity for up to 1,500 employees. Development on the 29-acre campus will also include a fitness center, natural habitat landscaping, ponds and walking trails, leaving room for additional construction in the future.

At the time of its construction in 2013, Hub Group’s existing corporate headquarters building was the first new office structure in Oak Brook since 2000. The logistics firm relocated to Oak Brook with approximately 500 employees at the time and now employs around 800.

“We’ve been able to attract and retain great people to Oak Brook,” Dave Yeager, chairman and chief executive officer, said to the Tribune. “We have a fair amount of employees who reverse commute from the city, but I think they like the work environment here, and Oak Brook is easy to get to. It’s also a very business-friendly community.”

The new building will mimic the existing structure, originally designed by Solomon Cordwell Buenz (SCB). The four-story, 130,000-square-foot building features a high-performance, floor-to-ceiling glass curtain wall to capitalize on natural light while the building’s highly efficient operating systems optimize interior comfort for employees.

SCB designed the workspaces with an “inside-out” methodology, taking into account user movements, comfort and needs to form a highly functional space that encourages collaboration and connectivity. The open floor plans incorporate spaces for both private and informal breakout meetings; Hub Group’s brand identity was incorporated through the use of the firm’s green shipping as low partitions to mark the multiple break-out spaces.