The Root Coworking plans to open in a new mass-timber office building in North Downtown. Interior build-out is underway on a 25,000 sq. ft. space inside the 4-story, 120,000 sq. ft. building at 1501 Mike Fahey Street. Opening is planned for May or June. The Oklahoma-based coworking office provider has two locations in Tulsa and one in Fayetteville, Ark.