Vikings Stadium Construction Off To Swift StartThe big dig is on. Construction on a new Vikings stadium is well underway. In fact, it's going so fast that the demolition of the old Dome could happen soon. Mortenson Construction Company, the builder of the new stadium, has already removed 100,000 tons of dirt, creating a vast hole that is essentially a foundation for the new facility. Workers are putting in the pilings to secure the outer perimeter. All of this is in preparation for the last Dome event: the Vikings game against the Lions on Dec. 29.