Developer unveils mixed-use project at Arlington’s former Key Bridge Marriott site

Washington, D.C.-based real estate company Quadrangle Development this week unveiled plans to develop a massive residential project with a hotel and public park space on a 5.5-acre property in Rosslyn.

The project, known as Potomac Overlook, will be built on the former site of the Key Bridge Marriott at 1401 Langston Blvd., at the intersection of North Fort Myer Drive and Langston Boulevard.

The proposed development would feature 1,775 residential units across five buildings, along with a 200-room hotel. Parking will be underground to accommodate open space and biking and walking paths that will connect to the multi-use Custis Trail and Gateway Park. Other features include seating, landscaping, green space, pathways and public art.

“This is an exceptional opportunity to activate an incredible property at the center of so much activity in Rosslyn and the entire DMV,” Quadrangle President Christopher Gladstone said in a statement. “Our design purposefully invites the public in to enjoy this unique water view property offering outstanding views over the Potomac River and toward the nation’s Capital.”

Quandrangle says it’s working on behalf of a lender, “which holds the defaulted first-lien mortgage debt on the land” and selected Quandrangle as its development consultant to plan the vacant site’s future. While Quadrangle did not disclose the lender’s identity and did not immediately return requests for comment, property records show the site is still owned by Los Angeles real estate developer Woodridge Capital Partners and its subsidiary, KBLH, which acquired the property in 2018 for $53.8 million.

The Key Bridge Marriott hotel closed in 2021. Woodridge had long planned to redevelop the property, with a proposal to add a building with 151 condo units and another with 300 apartments. That project never came to pass, however, with ARLnow reporting in 2022 that Woodridge was showing signs of financial distress, falling behind on paying real estate taxes. Arlington County condemned the site in 2023, deeming it a “public nuisance,” and it was demolished last year.

Woodridge could not be reached by phone or email on Friday.

The development team includes DCS Design, Vika Virginia, Federal Airways & Airspace, and Walsh, Colucci, Lubeley & Walsh. The company said the project will help meet housing demand as Arlington continues to experience steady residential growth.

The developers filed an application for the project with the county on Dec. 22, 2025, the first step in its zoning review. They’re seeking approval to construct six buildings up to 350 feet tall, which could range from 23 to 35 floors depending on the floor height. Currently, the site is limited to 16 floors in its commercial office, mixed-use zoning.

Quadrangle said its team plans to work closely with county staff to refine the proposed project within a clear, efficient timeline. The company did not provide an estimated timeline or estimated cost for the project and did not immediately return requests for comment.

Founded in 1971, Quadrangle has built, acquired or begun development on 63 properties totaling 20 million square feet, with its work focusing on the Greater Washington area. It has a 150-person in-house team.