LEWISTOWN — The Pennsylvania Department of Transportation announced the following schedule of maintenance activities in Mifflin County the week of June 16:

Surface Treatment

• Route 4006 (Back Mountain Road) between Route 305 (Greenwood Road) in Armagh Township and Route 1005 (Old US 322 Highway). Monday, June 16, through Wednesday, June 18. Flaggers in the roadway will provide traffic control during daylight hours.

Commonly known as “oil and chip” or “sealcoat,” this operation is a preservation strategy used to maintain mainly low-traffic-volume roads for five to seven years. It is also used on high-volume roads to extend pavement life between resurfacings. Generally, it takes stones about two days to fully bond in the hardened asphalt. Motorists should reduce their speed on these roads until the stones fully adhere to the asphalt. This maintenance seals the road surface to keep water out, restores the friction of the surface to enhance traction, and is very cost-effective.

This schedule is subject to change due to weather conditions, emergencies, or other unforeseen interruptions.

Customers can report road concerns by calling 1-800-FIX-ROAD. If calling after hours, please leave a name and phone number.

For more information on PennDOT’s maintenance activities, visit www.PennDOT.pa.gov/about-us/maintenanceactivities.