Pennsylvania Route 420 is a short, north–south state highway in Delaware County

Delaware County, Pennsylvania

Delaware County is a county located in the U.S. state of Pennsylvania. As of 2010, the population was 558,979, making it Pennsylvania's fifth most populous county, behind Philadelphia, Allegheny, Montgomery, and Bucks counties....

, Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

. The route runs from Pennsylvania Route 291

Pennsylvania Route 291

Pennsylvania Route 291 is an east–west route that connects U.S. Route 13 in the Trainer/Marcus Hook area to Interstate 76 in Southwest Philadelphia near the Walt Whitman Bridge and the South Philadelphia Sports Complex. Except for a short section between U.S. Route 13 and the...

 in Tinicum Township

Tinicum Township, Delaware County, Pennsylvania

Tinicum Township, more popularly known as "Tinicum Island" or "The Island", a census-designated place and township in Delaware County, Pennsylvania, United States. The population was 4,353 at the 2000 census. Included within the township's boundaries are the communities of Essington and Lester...

, a short distance west of the Philadelphia International Airport

Philadelphia International Airport

Philadelphia International Airport is a major airport in Philadelphia, Pennsylvania, United States, and is the largest airport in the Delaware Valley region and in Pennsylvania...

, to Pennsylvania Route 320

Pennsylvania Route 320

Pennsylvania Route 320 is a north–south state highway in southeastern Pennsylvania. The southern terminus of the long route is at PA 291 in Chester...

 in Springfield Township

Springfield Township, Delaware County, Pennsylvania

Springfield Township, or simply Springfield, is a township and a Census Designated Place in Delaware County in the U.S. state of Pennsylvania. The population was 23,677 at the 2000 census...

.

Route description

Pennsylvania Route 420 heads north from Pennsylvania Route 291 on Wanamaker Avenue. Shortly after the PA 291 intersection, Pennsylvania Route 420 features a cloverleaf interchange with Interstate 95

Interstate 95 in Pennsylvania

Interstate 95 is an Interstate highway running from Miami, Florida north to Houlton, Maine. In the U.S. state of Pennsylvania, the route is known by many as the Delaware Expressway, but is officially named The Vietnam Veterans Memorial Highway. and locally known as "95"...

. The route then crosses the Darby Creek

Darby Creek (Pennsylvania)

thumb|Darby Creek where it crosses [[Pennsylvania Route 320|Route 320]] in [[Marple Township, Pennsylvania|Marple Township]]Darby Creek is a creek in Delaware County, Pennsylvania...

 into the borough of Prospect Park

Prospect Park, Pennsylvania

Prospect Park is a borough in Delaware County, Pennsylvania, United States. The population was 6,594 at the 2000 census. It originated as a bedroom community of Philadelphia...

, and the name changes to Lincoln Avenue. Pennsylvania Route 420 intersects U.S. Route 13

U.S. Route 13

U.S. Route 13 is a north–south U.S. highway established in 1926 that runs for from Interstate 95 just north of Fayetteville, North Carolina to the northeastern suburbs of Philadelphia, Pennsylvania, in Morrisville. In all, it traverses five states in the Atlantic coastal plain region,...

 in Prospect Park. The route then enters Ridley Township

Ridley Township, Pennsylvania

Ridley Township is a township in Delaware County, Pennsylvania, United States. The population was 30,791 at the 2000 census.Students residing within the district generally attend schools within the Ridley School District, although there are several Catholic schools located in the township as...

, where it becomes known as Kedron Avenue. Pennsylvania Route 420 crosses MacDade Boulevard and continues north into the borough of Morton

Morton, Pennsylvania

Morton is a borough in Delaware County, Pennsylvania, United States. The population was 2,715 at the 2000 census.-Geography:Morton is located at ....

. At the intersection with Morton Avenue near the crossing of the SEPTA Media/Elwyn Line

Media/Elwyn Line

The Media/Elwyn Line is a SEPTA Regional Rail line running from Center City Philadelphia west to Elwyn in Delaware County.Originally known as the Media/West Chester Branch, service was truncated on September 19, 1986 from West Chester to its current terminus at Elwyn. Service expansion beyond Elwyn...

, Pennsylvania Route 420 becomes known as Woodland Avenue. Woodland Avenue continues into Springfield Township, intersecting the Baltimore Pike

Baltimore Pike

thumb|[[SEPTA]]'s [[SEPTA Route 34|Route 34]] streetcar line runs through the 4500 block of Baltimore Avenue in [[West Philadelphia]]The Baltimore Pike was an auto trail in the United States, connecting Baltimore, Maryland with Philadelphia, Pennsylvania....

 and continues north to Pennsylvania Route 320, a short distance south of U.S. 1

U.S. Route 1 in Pennsylvania

U.S. Route 1 is a major north–south U.S. Highway, extending from the Florida Keys in the south to the Canadian border in the north. In the U.S. state of Pennsylvania, US 1 runs for from the Maryland state line near Oxford to the New Jersey state line near Trenton.-Maryland to Interstate...

.

History

PA 420 was signed in 1928.

Many of the route's signs have been stolen because of the route number's significance to slang

420 (cannabis culture)

420, 4:20 or 4/20 refers to consumption of cannabis and, by extension, a way to identify oneself with cannabis subculture. The notable day for these is April 20.- Origins of terms :...

 for smoking marijuana.

Major intersections