Route 4 starts in
Paterson,
Passaic County, at the intersection of Broadway and East 43rd Street at an interchange with
Route 20 (McLean Boulevard), heading east on Broadway, a four-lane arterial road with a
Jersey barrier. At the intersection with Cyril Avenue, Route 4 runs along the border of Elmwood Park to the south and
Fair Lawn to the north before entirely entering Fair Lawn, where the route passes under
NJ Transit’s
Bergen County Line near
Broadway station. It intersects CR 67 (Midland Avenue) and continues east as an arterial road with a Jersey barrier through commercial areas of Fair Lawn. Route 4 comes to an interchange
Route 208, where the route continues east on the Route 208 alignment, as a divided highway with four lanes in the eastbound direction and three lanes in the westbound direction. The interchange between Route 4 and Route 208 also features access to CR 79 (Saddle River Road). The route continues east as a six-lane arterial that is lined with businesses. Route 4 crosses the
Saddle River and then enters
Paramus. Upon entering Paramus, Route 4 has a
cloverleaf interchange with CR 62 (Paramus Road/Passaic Street). The route features a partial interchange with the
Garden State Parkway, with access from westbound Route 4 to the southbound Garden State Parkway and from the northbound Garden State Parkway to eastbound Route 4. Route 4 has an interchange which provides access to the
Westfield Garden State Plaza shopping mall, located on the south side of the road, and a large
IKEA store, located on the north side of the road. Past this, Route 4 features a cloverleaf interchange with
Route 17 and continues east as a six-lane arterial. It interchanges with Spring Valley Road and passes by
Bergen Town Center located on the south side of the road. Route 4 interchanges with
CR 59 (Forest Avenue/Maywood Avenue). As the road leaves Paramus, businesses no longer line the route. Route 4 enters
River Edge, where the route crosses Van Saun Mill Creek, and it heads to the southeast and features ramps that provide access to CR 51 (Kinderkamack Road), which the route passes over along with NJ Transit's
Pascack Valley Line just south of the
New Bridge Landing station. Upon crossing the Pascack Valley Line, Route 4 heads into
Hackensack, where it interchanges with
CR 503 (Hackensack Avenue) near
The Shops at Riverside. The route crosses the
Hackensack River into
Teaneck and heads through the campus of
Fairleigh Dickinson University. Route 4 features ramps that provide access to CR 41 (River Road), which it later passes over. The road continues southeast through wooded residential areas, intersecting a few roads at right-in/right-out intersections, before passing over
CSX's
River Subdivision line and reaching an interchange with Queen Anne Road. It interchanges with CR 39 (Teaneck Road) and Webster Avenue/Farragut Drive before crossing into
Englewood where the route crosses
Overpeck Creek. In Englewood, Route 4 passes over CSX's
Northern Branch rail line. Nearby is a cloverleaf interchange with
Route 93 and
CR 501 (Grand Avenue). Past this interchange, businesses stop along the road and it continues east with three lanes in the eastbound direction and two lanes in the westbound direction, coming to an interchange with Jones Road. Past this interchange, the road continues south with businesses along the road, crossing into
Fort Lee. In Fort Lee, the lanes split as Route 4 approaches
I-95, with the eastbound lanes passing over I-95. Route 4 continues south with I-95 in the median, ending at an interchange with I-95,
US 1/9,
US 46, and
US 9W, at the George Washington Bridge approach. ==History==