EDISON - Commuters should expect heavy delays today around Route 1 North and South in Middlesex County.

Construction on Route 1 begins on Old Post Road. Route 1 has been reduced from three lanes to one in that area.

The Department of Transportation is also repairing a railroad crossing about a half a mile down the road causing a detour.

Officials say that the repairs are expected to take all weekend long and should be completed by 5 a.m. on Monday.