New Jersey Route 159

Route 159
Route 159 is highlighted in red
Route information
Maintained by NJDOT
Length	1.36 mi[1] (2.19 km)
Existed	1953 (1941 as Route 6M)[2]–present
Major junctions
West end	US 46 in Montville
Major intersections	CR 506 in Fairfield
East end	US 46 / CR 627 in Fairfield
Location
Country	United States
State	New Jersey
Counties	Morris, Essex
Highway system
New Jersey State Highway Routes Interstate US State Scenic Byways
← Route 158 → Route 160

Route 159 is a short, 1.36-mile (2.19 km) highway in the Montville and Fairfield areas. Route 159's western and eastern termini are both at U.S. Route 46 (US 46). Route 159 is called locally as Bloomfield Avenue, Oak Road, and Clinton Road during its length.

Route 159 is a former alignment of U.S. Route 46, until the highway was bypassed in 1941. At that time, U.S. Route 46 also had the designation State Highway Route 6, and when the bypass opened in 1941, the original alignment was designated Route 6M. The 6M designation lasted just twelve years, when in 1953, it was renumbered as Route 159.