Building Hours

Main entrances to buildings on the Science and Technology Campus are unlocked as follows:

Colgan Hall
Monday – Friday: 6 a.m. to 11 p.m.
Saturday: 7 a.m. to 8 p.m.
Sunday: 7 a.m. to 7 p.m.

Katherine G. Johnson Hall (formerly Bull Run Hall)
Monday to Friday: 7 a.m. to 11 p.m.
Saturday: 7 a.m. to 4 p.m.
Sunday: Closed

Discovery Hall
Monday to Friday: 8 a.m. to 5 p.m.
Saturday/Sunday: Closed

Institute for Advanced Biomedical Research
Monday to Friday: 6 a.m. to 8 p.m.
Saturday/Sunday: Closed

Card swipe access when buildings are closed must be arranged through Mason Police. Please direct questions concerning building access to department access coordinators or the Card Access Security Office (

For questions regarding building access, contact Mason Police at 703-993-2810.