sentences:  It intersects with I-95 (Exit 63) about north of US 1 and passes in front of the Clinton Crossing outlet mall before heading into the town of Killingworth.North of I-95 in Clinton, the road is known as Killingworth Turnpike.In Killingworth, Route 81 becomes Clinton Road and has a junction with Route 80 south of the town center at a rotary.