US-based CTA Architects Engineers and international practice Populous have unveiled designs to rebuild the Rimrock Auto Arena in Montana, US, which was damaged by a tornado earlier this year.
Work will include rebuilding the arena with new entrances, employing better acoustic features and provision of more bathrooms to meet state rules and building codes.
Work on the project is estimated to cost $15m is said to be funded by Yellowstone County and its insurance company.
Roofing works worth $4m have begun. Vertical glass panels will replace the box office's sloping roof on the first floor and offices on half of the second floor.
Other additions may include a bridge link from the arena to the parking lot, and new glass doors and windows.
The building upgrade for the entire project is expected to take two, according to the Billings Gazette.