As of November 2, 2019, the Mudd Building is accessible through the first floor/West 120th Street entrance on Saturdays and Sundays for CUID holders during the building’s regular weekend hours, 10:00 A.M. to 7:00 P.M. Previously, weekend access was limited to the campus entrance. Access through other entrances on the weekdays and weekends remains the same.
This change results from a collaborative effort between SEAS Administration, SEAS Student Council, who proposed the initiative, and Columbia University Public Safety.