Drivers should beware of road closures in and around Washington University’s campus starting Saturday ahead of the presidential debate.

Starting at 2 p.m. Saturday, Big Bend Boulevard will be closed between Wydown Boulevard and Forest Park Parkway. The road reopens at 6 a.m. Monday.

Forsyth Boulevard also is closing between Big Bend and Skinker boulevards starting at 9 a.m. Sunday until 6 a.m. Monday. All closed roads will have signs highlighting detours.

Workers were putting up a fence Friday along the west side of Big Bend between Forsyth and Westmoreland Drive, blocking access from side streets, alleys and driveways.

Starting Friday, the campus is closed to outside visitors with the exception of credentialed media.

The presidential debate will be 8 to 9:30 p.m. Sunday in the university’s Athletic Complex.