Town of Sahuarita issued the following announcement on Nov. 30.
Plan for nightly northbound ramp closures on Interstate 19 at Pima Mine Road starting Tuesday, Nov. 30:
The Arizona Department of Transportation advises motorists to plan for nightly northbound on- and off-ramp closures on Interstate 19 at Pima Mine Road in Sahuarita Tuesday, Nov. 30, Wednesday, Dec.1, and Thursday, Dec. 2, for guardrail replacement.
Work will take place between 9 p.m. and 6 a.m. each night.
Drivers should proceed through the work zone with caution, slow down and watch for construction personnel and equipment.
Original source can be found here.