High Quality Content by WIKIPEDIA articles! Route 4 is a state highway in Bergen County and Passaic County, New Jersey, United States, that is also known as the Mackay Highway. The highway stretches 10.83 mi (17.43 km) from Route 20 (McLean Boulevard) in Paterson east to an interchange with Interstate 95, U.S. Route 1/9, U.S. Route 46, and U.S. Route 9W at the George Washington Bridge approach in Fort Lee. The route is a four- to six-lane 40 to 50 mph (64 to 80 km/h) divided highway its entire length, with the portion east of the Route 208 interchange in Fair Lawn a partial freeway consisting of interchanges and right-in/right-out intersections with a few businesses along the road, particularly in Paramus, where the route passes through a major shopping area consisting of numerous malls, Englewood, and Fort Lee. West of Route 208, the route is a surface arterial lined that runs through commercial areas. Route 4 intersects many important roads, including Route 208 in Fair Lawn and the Garden State Parkway and Route 17 in Paramus.