Pittsburgh, PA – PennDOT District 11 is announcing drilling operations on Pennsylvania Avenue (Route 51) in Monaca Borough, Beaver County will begin Monday, February 20 weather permitting. Drilling work requiring lane restrictions will occur from 9 a.m. to 3 p.m. weekdays through Friday, February 24 on Pennsylvania Avenue between 16th Street and 17th Street. Crews from Armstrong Drilling will conduct the work. Please use caution if traveling in the area.