 Route 17 enters Allendale , with businesses resuming along the road . It enters Upper Saddle River before running through Ramsey , where the road crosses back into Upper Saddle River . The route comes to an interchange with County Route 81 ( Lake Street / Crescent Avenue ) , where it crosses back into Ramsey . In Ramsey , Route 17 turns to the northwest and features a RIRO for County Route 83 ( <unk> Avenue ) , an interchange with County Route 507 ( Franklin Turnpike ) , and an interchange for Island Avenue / Spring Street . The route passes over New Jersey Transit ’ s Bergen County Line / Main Line near the Ramsey Route 17 train station and enters Mahwah . In Mahwah , Route 17 interchanges with County Route 85 ( Island Road ) and County Route 100 ( Ramapo Avenue ) . North of Ramapo Avenue , Route 17 features an interchange with U.S. Route 202 and crosses the Ramapo River . Route 17 interchanges with Stag Hill Road just before merging with six @-@ lane Interstate 287 , which it follows to the New York border , where the road continues into Hillburn , Rockland County as Interstate 287 and New York State Route 17 , intersecting Interstate 87 ( the New York State Thruway ) shortly after the state line . 
