Northern Arizona motorists on Interstate 40 near Williams, west of Flagstaff, should expect ramp closures at Grand Canyon Boulevard (exit 164) and State Route 64 (exit 165) during daytime hours for paving work on Dec. 4-5 and Dec. 10-11.

Work is scheduled between 8 a.m. and 4 p.m. each day.

Drivers are advised to follow the signed detour routes while the following on- and off-ramp closures are in place:

Wednesday, Dec. 5: Westbound on-ramp at State Route 64 (exit 165) closed.
Thursday, Dec. 6: Westbound on- and off- ramp at Grand Canyon Boulevard (exit 164) closed.
Tuesday, Dec. 11: Eastbound on- and off-ramp at Grand Canyon Boulevard (exit 164) closed.
Wednesday, Dec. 12: Eastbound off-ramp at State Route 64 (exit 165) closed.

Drivers should proceed through the work zone with caution, slow down and watch for construction personnel and equipment.