During phases 3 and 4 Rivervale Road north of Westwood Avenue will be closed and available to local traffic only, all other traffic must follow designated detours.
Northbound Western Detour:
Westwood Avenue to Cedar Lane to Piermont Avenue to Ruckman Road to Prospect Avenue to Rivervale Road.
Northbound Eastern Detour:
Westwood Avenue to Washington Avenue to Old Tappan Road toRivervale Road.
Southbound Western Detour:
Prospect Avenue to Ruckman Road toPiermont Avenue to Cedar Lane to Westwood Avenue to Rivervale Road.
Southbound Eastern Detour:
Rivervale Road to Old Tappan Road to Washington Avenue to Westwood Avenue.
Construction is expected to take up to two months, police said.
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