The entire length of SR 620 is also known as Braddock Road (except for a small section in Centreville called Spindle Court).

It has a very large number of residential neighborhoods lining the road, so most of the remainder is also a major commuter artery.

The length and positioning of the highway attract motorists that are traveling from one part of Fairfax County to another.

However, SR 620 quickly turns off onto a side-street, Spindle Court, and unceremoniously dead-ends behind Mountain View Alternative High School, creating another gap.

It intersects with SR 609 (Pleasant Valley Road) and enters Loudoun County.

[2] Loudoun County supervisors will vote on a proposal in September 2019 for a different shopping center, located at the southeastern corner of the intersection.

This proposal would include a new intersection being constructed for an entrance off SR 620 to the shopping center.

These include the improvement of pedestrian walkways and reconfiguration of certain intersections to decrease congestion in the area.

[4][5] The county's Department of Transportation has ruled out adding travel lanes to SR 620 or constructing a new park-and-ride and transit center due to the high costs.

Braddock Road was originally composed of paths established by the Native American inhabitants of Northern Virginia.

Later, British colonialists and Virginian governments developed and improved the paths into what became known as "Braddock's Road."

Price's Common, a market that operated during the colonial administration and was the site of the drafting of the Virginia Declaration of Rights signed by George Mason (and after which the Bill of Rights of the United States Constitution was modeled), was located by the intersection of Braddock Road and Backlick Road.

During the American Civil War, both Union and Confederate troops traversed Braddock Road during various battles in Fairfax County and other parts of Northern Virginia.

Later, the part of SR 620 that was formed when Braddock Road was cut at US 29 was named after him, Spindle Court.