In 1987, a four classroom, one-story addition was built adjacent to the Wiegand building, the Wiegand Annex, to serve the needs of the sciences for classroom space. To provide for the research needs of the new faculty, some space in Adrian was converted to research labs.

In 1995, the Natural and Health Sciences building was built to expand the number of laboratory facilities for student instruction and faculty and student research. This facility also includes classrooms, seminar rooms, and offices for several science and allied health programs, as well as thirteen faculty offices and research labs.