This dual addition and partial renovation expands the facility to house new and growing STI programs as well as health education programs of USDSU, a collaboration of three South Dakota Universities: USD, SDSU, and DSU.

The addition to the Terrence M. Sullivan Health Science Center adds classroom, laboratory and office space for both STI and USDSU. THe  addition provides greatly enhanced facilities for the health technology programs at STI and the nursing programs at USDSU.

Taking advantage of the building's location along Interstate 29, the skylights are internally illuminated to act as beacons, presenting STI and USDSU to the community and region.

The original Health Science Center on the campus of STI was built in 1993. A significant design issue was how to respecfully expand a building with a red, pyramid-shaped roof. The response was to add a series of new roof pyramids of varying sizes and slopes which inject light into significant areas of the interior.

This project is a AIA SD award winner.