Get ready for a road realignment starting Wednesday on Route 3 in Westmoreland County between Flat Iron Road and Winter Harbor Road. DOT officials say the temporary traffic pattern will allow construction to continue on adding passing lanes in each direction between Potomac Mills and Flat Iron. There will be single-lane closures with one-way, alternating traffic from 12:00 p.m. to 5:00 p.m. today and from 7:00 a.m. to 5:00 p.m. Wednesday through Friday.