Sharing from PennDOT: 

Nighttime milling and paving will continue this week on US 422 in Limerick and Upper Providence Townships. Expect lane closures through September 3rd: EB from 7 PM–5 AM and WB from 8 PM–6 AM between Royersford Rd. and Troutman Rd. Drivers should plan for delays; work is weather dependent.