I got this email today from Palisades Park. This road seems to have many names...I assume they're talking about the hill at the north end of River Rd?

Alpine Approach Road to close for construction on Tuesday, April 18

Alpine Approach Road, from Park Headquarters to its junction with Henry Hudson Drive (the circle), will be closed for construction work all day tomorrow, Tuesday, April 18. (It is anticipated that the work will be completed in one day, but there remains the possibility of closure for part of Wednesday.) Access to the Alpine Boat Basin & Picnic Area will remain possible via Henry Hudson Drive from Englewood Cliffs.