 At the intersection with County Route 617 (Wood Avenue), Route 27 forms the border of Roselle to the west and Linden to the east, with about 23,081 vehicles using the road on a daily basis The route crosses the inactive Rahway Valley Railroad line that is owned by the Staten Island Railway.It passes by Warinaco Park and forms the border between Elizabeth to the west and Linden to the east before entirely entering Elizabeth at the Richford Terrace intersection.In Elizabeth, Route 27 narrows to two lanes and becomes Rahway Avenue, crossing Route 439 and continuing to the northeast through residential and commercial areas.