Prince William Parkway Is Going UNDER Minnieville Road — And It’s Setting the Stage for Woodbridge’s Quartz District
If you've driven through Prince William Parkway and Minnieville Road lately and wondered what all that construction is about, the answer is much bigger than a normal road improvement.
Prince William County is spending approximately $81 million to completely rebuild this major Woodbridge intersection, replacing the existing traffic signal with a grade-separated interchange. When finished, Prince William Parkway will travel underneath Minnieville Road. And directly beside all of this construction, a 145-acre mixed-use community called Quartz District is taking shape with more than 1,000 new homes, retail, parks and amenities. (PWC Works)
County officials have been unusually direct about the connection between the two projects: the new interchange is designed not only to relieve today's congestion, but also to accommodate traffic generated by the future Quartz District. (PWC Works)
🚧 The Intersection You Know Is About to Look Completely Different
Today, Prince William Parkway and Minnieville Road meet at one enormous signalized intersection.
That's changing.
The county is constructing what's known as a Single Point Urban Interchange, or SPUI. Instead of Prince William Parkway traffic stopping at the Minnieville Road traffic light, the Parkway will descend and pass beneath Minnieville Road. (Prince William County Government)
The project also includes roadway widening and reconstruction, retaining walls, a bridge underpass, upgraded signals and lighting, stormwater improvements, utility relocation, sidewalks, shared-use paths and improvements to Elm Farm Road. (PWC Works)
And this isn't a conceptual project that might happen years from now.
It's under construction right now.
Lane Construction began work in March 2026, Prince William County held the ceremonial groundbreaking on May 5, and the county currently anticipates completing the interchange in spring 2028. (PWC Works)
🚨 A Major Traffic Change Begins September 22
For people who actually live in Woodbridge, this is the part to know right now.
Beginning September 22, 2026, most left turns at Prince William Parkway and Minnieville Road will temporarily be restricted as crews move into the next stage of construction. Through traffic and right turns will remain open in every direction. (Prince William County Government)
Temporary detours will use Amethyst Avenue, Quartz Avenue, Elm Farm Road and a new temporary detour road depending on the direction of travel.
So if this intersection is part of your commute, expect the driving pattern to look noticeably different later this month.
🏙️ But Look at What's Being Built Next Door
This is where the transportation story becomes a real-estate story.
Immediately northwest of the interchange sits the Quartz District, a 145-acre property being transformed into a large mixed-use community.
The development is envisioned as something dramatically different from the traditional suburban shopping centers that dominate this part of Woodbridge.
Instead, the goal is a walkable neighborhood center combining residential development with retail, office space, public gathering areas and pedestrian-oriented streets. The developer describes experiential retail and placemaking as central parts of the vision. (Quartz District)
And unlike some massive DMV projects that remain years away from construction, residential development at Quartz District is already moving forward.
🏡 More Than 1,000 New Homes Are Coming
Stanley Martin announced in January 2026 that Quartz District will ultimately bring more than 1,000 new homes to the site.
The residential mix includes townhomes and two-level, townhome-style garage condominiums, with community amenities planned to include a clubhouse, pool, walking trails, playgrounds and open green space. (GlobeNewswire)
This is important because Quartz isn't simply adding another subdivision to Woodbridge.
The homes are supposed to connect with a larger commercial and recreational district.
Residents could eventually have restaurants, shops, green spaces and gathering areas within the same community instead of having to drive somewhere else for virtually everything.
🌊 Could THIS Really Be Woodbridge?
Some of the original Quartz District renderings are especially dramatic.
Conceptual plans have shown a central water feature surrounded by restaurants and commercial buildings, pedestrian spaces, landscaping and gathering areas.
One early concept even depicts a pedestrian bridge crossing the water, with fountains creating a centerpiece for the commercial district.
The vision resembles the type of destination-oriented development Northern Virginia residents might associate with places such as Mosaic District, Reston Town Center or One Loudoun, rather than a conventional Woodbridge strip center.
That's potentially a major shift for this section of Prince William County.
Important: these are conceptual master-plan renderings. The final commercial district, buildings, tenants, water features and public spaces can change as Quartz District is built out.
🛍️ A Walkable Town Center Instead of Another Strip Mall
The official Quartz District vision specifically emphasizes a commercial area with an urban, pedestrian-oriented character intended to distinguish it from surrounding suburban shopping centers. (Quartz District)
That means streets designed around pedestrians, public gathering spaces, outdoor dining opportunities and landscaping rather than simply stores surrounded by enormous parking lots.
This is one reason the project is particularly interesting from a real-estate perspective.
Prince William County has plenty of suburban retail.
What's less common is a large, intentionally designed mixed-use destination where people can live, shop and gather within the same neighborhood.
🤯 And This Is the View That Explains Everything
Look closely at this conceptual rendering.
You can see the relationship between the two projects:
Prince William Parkway → BELOW
Minnieville Road → ABOVE
Quartz District → RIGHT NEXT DOOR
That's why treating the interchange and Quartz District as completely separate projects misses the bigger picture.
Prince William County explicitly says the interchange is intended to accommodate increased future traffic from Quartz District. (PWC Works)
At the May groundbreaking, County Chair Deshundra Jefferson went even further, calling the interchange “the foundation that makes the Quartz District possible.” (PWC Works)
That's the real story.
💰 Prince William County Is Spending $81 Million Here
The interchange carries an approximately $81 million price tag and is funded through a combination of Northern Virginia Transportation Authority funds, developer proffers and local funding. (PWC Works)
County officials say the existing intersection has struggled with heavy through and turning traffic.
The new configuration is intended to increase capacity and improve traffic flow while also making the area safer and more accessible for pedestrians and cyclists.
New pedestrian infrastructure includes sidewalks and shared-use paths. (PWC Works)
That becomes particularly important if Quartz District eventually develops into the walkable destination depicted in the renderings.
🚗 What Happens to Traffic When 1,000+ Homes Arrive?
This will probably be one of the biggest concerns among existing Woodbridge residents.
Quartz District will introduce more than 1,000 homes, plus commercial activity, into an area that already experiences significant traffic. (GlobeNewswire)
That's precisely why the timing of the interchange matters.
Instead of waiting until Quartz District is completely built and then attempting to address the transportation problem, the county is constructing the major interchange while the community itself is still developing.
Whether the improvements will ultimately be enough for future traffic is something residents will undoubtedly debate.
But the transportation investment is happening before the neighborhood reaches full buildout.
🌳 Quartz District Isn't Supposed to Be Just Buildings
Public space is another important part of the Quartz vision.
The official development materials emphasize open spaces, pedestrian streetscapes and gathering areas intended to support events and activity throughout the community. (Quartz District)
Stanley Martin's residential plans separately call for a community pool, clubhouse, trails, playgrounds and open green spaces. (GlobeNewswire)
The combination is intended to create something more like a neighborhood destination than an isolated collection of townhouses.
🏗️ What Quartz District Could Look Like When It's Built Out
If the eventual development resembles these conceptual renderings, the transformation will be dramatic.
The property that historically sat largely undeveloped could become a dense collection of homes, commercial buildings, landscaped streets, public spaces and pedestrian connections.
And beside it will be an interchange that looks almost nothing like today's Prince William Parkway/Minnieville intersection.
It's essentially two transformations occurring at once:
A suburban intersection → major grade-separated interchange
and
Undeveloped land → 145-acre mixed-use community
That's what makes this development particularly significant for eastern Prince William County.
📍 Why the Location Matters
Quartz District sits at one of Woodbridge's most recognizable crossroads and is less than five minutes from I-95 and Potomac Mills, according to Stanley Martin. (GlobeNewswire)
That gives future residents access to several of eastern Prince William County's major transportation and commercial corridors.
But the larger question is whether Quartz District can become a destination itself.
If the retail, public spaces and pedestrian-oriented commercial district envisioned in the master plan materialize, residents may eventually have another reason to stay within this part of Woodbridge rather than traveling elsewhere in Northern Virginia for a town-center experience.
🏠 What Could This Mean for Woodbridge Real Estate?
This is one of the Prince William County projects I'd pay particularly close attention to over the next several years.
Not because an $81 million interchange automatically makes nearby homes more valuable—it doesn't.
But major infrastructure and mixed-use development can change how buyers perceive a location.
Quartz District is adding new housing inventory. The commercial component could introduce new restaurants, shops and amenities. The interchange could change accessibility through one of the area's busiest intersections. New sidewalks and shared-use paths could improve connectivity.
At the same time, construction disruption, additional residents and future traffic are legitimate considerations.
The real-estate story will depend on what actually gets delivered, not simply what's shown in a rendering.
📅 What's the Timeline?
Here's where things currently stand as of September 2026:
March 2026: Construction begins on the interchange. (PWC Works)
May 5, 2026: Prince William County holds the ceremonial groundbreaking. (Prince William County Government)
September 22, 2026: Major temporary left-turn restrictions begin at Prince William Parkway and Minnieville Road. (Prince William County Government)
Spring 2028: Current target for completion of the interchange. (PWC Works)
Meanwhile, land and infrastructure work for Quartz District is underway, and Stanley Martin is marketing its new residential community. (GlobeNewswire)
🌆 This Part of Woodbridge Could Be Almost Unrecognizable
For years, Prince William Parkway and Minnieville Road has essentially been a major suburban crossroads surrounded by shopping centers, neighborhoods and undeveloped land.
Now imagine driving through this same location several years from now.
Instead of stopping at the enormous intersection, Prince William Parkway carries you underneath Minnieville Road.
Above and beside you is a new community with more than 1,000 homes.
Beyond that could be restaurants, shops, public spaces, trails and the type of pedestrian-oriented town center depicted in Quartz District's conceptual plans.
That's a dramatically different Woodbridge.
And construction on the infrastructure making it possible is happening right now.
Would you rather see this part of Woodbridge become a walkable mixed-use destination—or are you worried the additional development will bring too much traffic?
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Development renderings shown above are conceptual and represent the project's vision. Final buildings, retailers, public spaces, water features, amenities and site design may differ as Quartz District is developed.
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