Route 21 is a highway in Northern New Jersey, running 14.35 mi (23.09 km) from the Newark Airport Interchange with U.S. Route 1/9 and U.S. Route 22 in Newark, Essex County to an interchange with U.S. Route 46 in Clifton, Passaic County. The route is a four- to six-lane divided highway known as McCarter Highway on its southern portion in Newark that serves as a connector between the Newark and Paterson areas, following the west bank of the Passaic River for much of its length. It also serves as the main north–south highway through the central part of Newark, connecting attractions in Downtown Newark with Newark Airport. The portion of Route 21 through Newark is a surface arterial that runs alongside the elevated Northeast Corridor rail line through the southern part of the city and continues north through Downtown Newark while the portion north of Downtown Newark is a freeway. Route 21 intersects many major roads including Interstate 78, Route 27, and Interstate 280 in Newark, Route 7 in Belleville, and Route 3 in Clifton.
Interstate 87 (I-87) is a 333.49-mile-long (536.70 km) north–south intrastate Interstate Highway located within the U.S. state of New York, and is most of the main highway between New York City and Montreal. The highway begins at exit 47 off I-278 in the New York City borough of the Bronx, just north of the Triborough Bridge and Grand Central Parkway. From there, the route runs northward through the Hudson Valley, the Capital District, and the easternmost part of the North Country to the Canadian border in the Town of Champlain. At its north end, I-87 continues into Quebec as Autoroute 15 (A-15). I-87 connects with several regionally important roads: I-95 in New York City, New York State Route 17 near Harriman, I-84 near Newburgh, and I-90 in Albany. The route is the longest intrastate Interstate Highway in the Interstate Highway System. The highway is not contiguous with I-87 in North Carolina.
Route 3 is a major state highway in the northeastern part of New Jersey. The route runs 10.84 miles (17.45 km) from U.S. Route 46 (US 46) in Clifton, Passaic County to US 1/9 in North Bergen, Hudson County. The route is a divided highway for its entire length, and intersects many major roads, including US 46, which takes travelers to Interstate 80 (I-80) west for commuting out of the city-area, Garden State Parkway and Route 21 in Clifton, Route 17 and the Western Spur of the New Jersey Turnpike (I-95) in East Rutherford, the Eastern Spur of the New Jersey Turnpike in Secaucus, and Route 495 in North Bergen, for traffic going to the Lincoln Tunnel into New York City. Route 3 serves as the main artery to the Lincoln Tunnel from I-80, with the help of US 46, together forming the only main path into New York City not up to interstate highway or freeway standards; with businesses, bus stops, and narrow lanes. Despite this, many construction projects over the years have been underway to alleviate this issue. Route 3 also provides access to the Hoffmann La Roche American headquarters in Nutley, the Meadowlands Sports Complex and American Dream Meadowlands in East Rutherford. The road inspired a story in The New Yorker in 2004 by Ian Frazier due to its views of the Manhattan skyline. Route 3 was originally the Lincoln Tunnel Approach and ended at the state line in the Hudson River, though it was scaled back following the construction of I-495; which is now Route 495 due to also not meeting interstate highway standards.
Route 4 is a state highway in Bergen County and Passaic County, New Jersey, United States. The highway stretches 10.83 mi (17.43 km) from Route 20 in Paterson east to an interchange with Interstate 95 (I-95), U.S. Route 1/9 (US 1/9), US 46, and US 9W at the George Washington Bridge approach in Fort Lee.
Route 20, known locally as McLean Boulevard, is a state highway that runs 4.15 miles (6.68 km) in New Jersey, United States. It runs along the east side of Paterson, Passaic County, following the west bank of the Passaic River between U.S. Route 46 and River Street, at which point County Route 504 begins. It is a four- to six-lane divided highway for most of its length that runs through residential and commercial areas of Paterson, intersecting with Interstate 80 and Route 4 at interchanges. The northernmost part of the route is a county-maintained one-way pair that follows 1st and 2nd Avenues.
Route 17 is a state highway in Bergen County, New Jersey, United States, that provides a major route from the George Washington Bridge, Lincoln Tunnel and other northeast New Jersey points to the New York State Thruway at Suffern, New York. It runs 27.20 mi (43.77 km) from an intersection with Route 7 and County Route 507 (CR 507) in North Arlington north to the New York border along Interstate 287 (I-287) in Mahwah, where New York State Route 17 (NY 17) continues into New York. Between Route 7 and Route 3 in Rutherford, Route 17 serves as a local road. From Route 3 north to the junction with U.S. Route 46 (US 46) in Hasbrouck Heights, the road is a suburban arterial with jughandles. The portion of Route 17 from US 46 to I-287 near the state line in Mahwah is a limited-access road with all cross traffic handled by interchanges, and many driveways and side streets accessed from right-in/right-out ramps from the right lane. For three miles (5 km) north of Route 4, well over a hundred retail stores and several large shopping malls line the route in the borough of Paramus. The remainder of this portion of Route 17 features lighter suburban development. The northernmost portion of Route 17 in Mahwah runs concurrently with I-287 to the New York border.
Route 23 is a state highway in the northern part of New Jersey in the United States. The route runs 52.63 mi (84.70 km) from County Route 506 and County Route 577 in Verona, Essex County northwest to the border with New York at Montague Township in Sussex County, where the road continues to Port Jervis, New York as Orange County Route 15. Route 23 heads through Essex and Passaic Counties as a suburban arterial varying from two to four lanes and becomes a six-lane freeway north of a complex interchange with U.S. Route 46 and Interstate 80 in Wayne. The freeway carries Route 23 north to a concurrency with U.S. Route 202. Past the freeway portion, the route heads northwest along the border of Morris and Passaic Counties as a four- to six-lane divided highway with a wide median at places, winding through mountainous areas and crossing Interstate 287 in Riverdale. The route continues northwest through Sussex County as a mostly two-lane, undivided road that passes through farmland and woodland as well as the communities of Franklin, Hamburg, and Sussex before reaching the New York state line, just south of an interchange with Interstate 84 and US 6 in Port Jervis, in Montague Township near High Point State Park.
Route 24 is a 10.42-mile (16.77 km) state highway in New Jersey, United States, that begins at a junction with Interstate 287 (I-287) in Hanover Township in Morris County, passes southeast through Essex County, and ends at a junction with I-78 in Springfield Township in Union County. The route is a four- to six-lane freeway for its entire length.
Route 124 is a state highway in the northern part of New Jersey in the United States that is 14.74 mi (23.72 km) long. It is the eastern section of what used to be Route 24 before that road was realigned to its current freeway alignment. The western end is at an intersection with U.S. Route 202 (US 202) and County Route 510 (CR 510) in Morristown, Morris County; the eastern end continues as CR 603 on Springfield Avenue at the border between Maplewood and Irvington in Essex County. The route runs through suburban areas of Morris County, passing through Madison and Chatham. It interchanges with Route 24 on the border of Millburn, Essex County and Summit, Union County and serves as a frontage road for that route. Upon splitting from Route 24, Route 124 continues east through Springfield Township, Union Township, and Maplewood to its eastern terminus.
U.S. Route 46 (US 46) is an east–west U.S. Highway completely within the state of New Jersey, running for 75.34 mi (121.25 km), making it the shortest signed, non-spur U.S. Highway. The west end is at an interchange with Interstate 80 (I-80) and Route 94 in Columbia, Warren County on the Delaware River. The east end is in the middle of the George Washington Bridge over the Hudson River in Fort Lee, Bergen County while the route is concurrent with I-95 and US 1-9. Throughout much of its length, US 46 is closely paralleled by I-80. US 46 is a major local and suburban route, with some sections built to or near freeway standards and many other sections arterials with jughandles. The route runs through several communities in the northern part of New Jersey, including Hackettstown, Netcong, Dover, Parsippany-Troy Hills, Wayne, Clifton, Ridgefield Park, Palisades Park, and Fort Lee. It crosses over the Upper Passaic River at several points. The road has been ceremonially named the United Spanish–American War Veterans Memorial Highway.
Route 208 is a state highway in the northern part of New Jersey in the United States. It runs 10.07 miles (16.21 km) from an interchange with Route 4 and County Route 79 in Fair Lawn northwest to an interchange with Interstate 287 (I-287) in Oakland. The route runs through suburban areas of Bergen and Passaic counties as a four- to six-lane divided highway. It is a limited-access road, as intersections with cross roads are controlled by interchanges, but is not a controlled access road as several driveways exist. The route runs through the communities of Fair Lawn, Glen Rock, Hawthorne, Wyckoff, and Franklin Lakes along the way, interchanging with CR 507 in Fair Lawn and CR 502 in Franklin Lakes.
Route 440 is a state highway in New Jersey, United States. It comprises two segments, a 5.15-mile (8.29 km) freeway in Middlesex County linking Interstate 287 (I-287) and the New Jersey Turnpike (I-95), in Edison to the Outerbridge Crossing in Perth Amboy and a 8.18-mile (13.16 km) four-lane divided highway in Hudson County running from the Bayonne Bridge in Bayonne to U.S. Route 1/9 Truck in Jersey City. These two segments are connected by New York State Route 440 (NY 440), which runs across Staten Island. The freeway portion in Middlesex County is six lanes wide and interchanges with the Garden State Parkway and US 9 in Woodbridge.
The Palisades Interstate Parkway (PIP) is a 38.25-mile-long (61.56 km) limited-access highway in the U.S. states of New Jersey and New York. The parkway is a major commuter route into New York City from Rockland and Orange counties in New York and Bergen County in New Jersey. The southern terminus of the route is at the George Washington Bridge in Fort Lee, New Jersey, where it connects to Interstate 95 (I-95), Route 4 and US 46. Its northern terminus is at a traffic circle in Fort Montgomery, New York, where the PIP meets US 9W and US 202 at the Bear Mountain Bridge. At exit 18, the PIP forms a concurrency with US 6 for the remaining duration of its run.
Interstate 287 (I-287) is an auxiliary Interstate Highway in the US states of New Jersey and New York. It is a partial beltway around New York City, serving the northern half of New Jersey and the counties of Rockland and Westchester in New York. I-287, which is signed north–south in New Jersey and east–west in New York, follows a roughly horseshoe-shaped route from the New Jersey Turnpike (I-95) in Edison Township, New Jersey, clockwise to the New England Thruway (I-95) in Rye, New York, for 98.72 miles (158.87 km). Through New Jersey, I-287 runs west from its southern terminus in Edison through suburban areas. In Bridgewater Township, the freeway takes a more northeasterly course, paralleled by U.S. Route 202 (US 202). The northernmost part of I-287 in New Jersey passes through mountainous surroundings. After crossing into New York at Suffern, I-287 turns east on the New York State Thruway (I-87) and runs through Rockland County. After crossing the Hudson River on the Tappan Zee Bridge, I-287 splits from I-87 near Tarrytown and continues east through Westchester County on the Cross-Westchester Expressway until it reaches the New England Thruway. Within New Jersey, I-287 is maintained by the New Jersey Department of Transportation (NJDOT), and within New York, it is maintained by the New York State Thruway Authority (NYSTA).
Interstate 280 (I-280) is a 17.85-mile (28.73 km) Interstate Highway in the U.S. state of New Jersey. It provides a spur from I-80 in Parsippany-Troy Hills, Morris County to Newark, and I-95 in Kearny, Hudson County. In Kearny, access is provided toward the Holland Tunnel and Lincoln Tunnel to New York City. The western part of the route runs through suburban areas of Morris and Essex counties, crossing the Watchung Mountains. Upon reaching The Oranges, the setting becomes more urbanized and I-280 runs along a depressed alignment before ascending again in Newark. I-280 includes a lift bridge, the William A. Stickel Memorial Bridge over the Passaic River between Newark and East Newark/Harrison. The highway is sometimes called the Essex Freeway. I-280 interchanges with several roads, including the Garden State Parkway in East Orange and Route 21 in Newark.
Interstate 684 (I-684) is a 28.51-mile-long (45.88 km) north–south Interstate Highway in the state of New York in the United States. There is also a short portion in Connecticut with no junctions. The highway connects I-84 with I-287 and the Hutchinson River Parkway, primarily serving commuter traffic to and from the northern suburbs of the New York metropolitan area. Most of the route is in northern Westchester County. The route of the highway was originally designated as part of I-87 from 1968 to 1970. The first section of the roadway opened to traffic in October 1968, and the final segment was completed in December 1974.
Interstate 95 (I-95) is a major Interstate Highway that traverses nearly the full extent of the East Coast of the United States, from Florida to Maine. In the state of New Jersey, it runs along much of the mainline of the New Jersey Turnpike, as well as the Pearl Harbor Memorial Extension, and the New Jersey Turnpike's I-95 Extension to the George Washington Bridge for a total of 77.96 mi (125.46 km). Located in the northeastern part of the state near New York City, the 11.03-mile (17.75 km) Western Spur of the New Jersey Turnpike, considered to be Route 95W by the New Jersey Department of Transportation (NJDOT), is also part of I-95.
Interstate 80 (I-80) is a major Interstate Highway in the United States, running from San Francisco, California eastward to the New York City Metropolitan Area. In New Jersey, I-80 runs for 68.54 miles (110.30 km) from the Delaware Water Gap Toll Bridge at the Pennsylvania state line to its eastern terminus at I-95 in Teaneck, Bergen County. I-95 continues from the end of I-80 to the George Washington Bridge for access to New York City. The highway runs parallel to U.S. Route 46 (US 46) through rural areas of Warren and Sussex counties before heading into more suburban surroundings in Morris County. As the road continues into Passaic and Bergen counties, it heads into more urban areas. The New Jersey Department of Transportation (NJDOT) identifies I-80 within the state as the Christopher Columbus Highway.
Route 58 is a former state highway in the city of Newark, New Jersey and nearby borough of Harrison, New Jersey. The highway ran from Orange and Hecker Streets in Newark, eastbound as a four-lane freeway across the William A. Stickel Memorial Bridge to Harrison, where it terminated at an intersection with County Route 508. The route originates as an alignment of Route 25A, a suffixed spur designated in 1939 of State Highway Route 25. The route was rechristened as Route 58 in the 1953 state highway renumbering. The highway was constructed into Interstate 280 in the 1950s, and the route persisted internally until the 1990s, when it was finally removed as a designation. A stub alignment of Route 58 remains near Hecker and Orange Streets.
U.S. Route 202 (US 202) is a U.S. Highway running from New Castle, Delaware northeast to Bangor, Maine. In the U.S. state of New Jersey, the route runs 80.31 mi (129.25 km) from the New Hope–Lambertville Toll Bridge over the Delaware River at the Pennsylvania border in Delaware Township, Hunterdon County near Lambertville northeast to the New York border in Mahwah, Bergen County. Along the route's journey, it passes through a variety of suburban and rural environments, including the communities of Flemington, Somerville, Morristown, Parsippany-Troy Hills, Wayne, and Oakland as well as five counties: Hunterdon, Somerset, Morris, Passaic, and Bergen. US 202 encounters many major roads in New Jersey, including Route 31, US 206, US 22, Interstate 80 (I-80), US 46, Route 23, and Route 17. From Somerville to the New York border, US 202 generally runs within a close distance of I-287 and interchanges with that route several times. The road ranges from a four-lane freeway between Lambertville and Ringoes in Hunterdon County to a two-lane undivided road through much of the northern portion of the route. North of the Route 53 intersection in Morris Plains, US 202 is maintained by individual counties rather than the New Jersey Department of Transportation with a few exceptions.
Route 23 in Butler 
Cross County Parkway at the New York state line in Alpine 
