Stillwater High School was expanded with two classroom additions and a large activity center.
The two-story activity center included a four-court gymnasium, a gymnastics area, a fitness center, and an entrance to the football stadium.
Both areas utilized precast concrete wall panels and precast plank floors. The activity center featured a steel joist and deck roof, while the classroom additions used precast concrete roofs for fire-rating purposes. The elevated running track in the gymnasium employed a composite concrete over metal deck slab hung from the roof structure above.