Transitway Extension to Pentagon City


The project design has been divided into three segments (described below under About the Project).

The Crystal Drive segment is currently in the design phase, with the civil design completed in June 2020. Construction of this segment will be coordinated with the 12th Street South Complete Street project in 2021/2022.

In Concept Phase:
  • 12th Street South segment - Preliminary engineering is underway. A traffic and operations analysis for this segment was completed in July 2020.
In Planning Phase:
  • South Hayes Street segment

About the Project

Planning for improved surface transit in the Crystal City/Potomac Yard corridor began in earnest in the early 2000s. This extension to Pentagon City is the northern segment of the Crystal City Potomac Yard Transitway, adding 1.1 miles to the 4.5-mile Transitway corridor dedicated to high-frequency, premium transit service. With the extension, the Transitway will run from the Braddock Road Metrorail station in the City of Alexandria to the Pentagon City Metrorail station in Arlington.

This project will add additional dedicated bus lanes and five new transit stations with associated station amenities. The stations will be similar in style and appearance to the existing Transitway stations on Crystal Drive and Clark Street. Two additional Transitway stations will be built during later phases:

  • A station at South Clark Street and 12th Street South will be part of the 15th Street South/South Clark-Bell Street Realignment project
  • A station on northbound South Hayes Street at 12th Street South will be built once the Washington Metropolitan Area Transit Authority (WMATA) completes the Pentagon City Center bus bays project

The Transitway will serve local travel demand within the corridor, including Amazon’s HQ2 headquarters, and enhance connections to Metrorail and improve connections to Columbia Pike. It will provide needed transportation capacity to support anticipated infill residential and office development in Crystal City and Pentagon City, particularly PenPlace, Pentagon Centre and Metropolitan Park.

Preferred Route

In 2016, the County completed an assessment of the preferred alignment for the Transitway extension from the Crystal City Metrorail station to the Pentagon City Metrorail station. The assessment compared routes along 12th Street South, 15th Street South, and 18th Street South.

For the Transitway extension, northbound travel will follow Crystal Drive from 18th Street South to 12th Street South, continue west along 12th Street to South Hayes Street, and then north to Army Navy Drive at Joyce Street. Southbound travel for the extension will follow Army Navy Drive east to South Hayes Street, continue east on 12th Street South, and then south on South Clark Street to the Crystal City Metrorail Station.



Project Segments

  • Crystal Drive from 15th Street South to 12th Street & Long Bridge Drive – Includes curbside rush hour bus lanes and two stations (on northbound Crystal Drive at 15th Street South, and on westbound 12th Street South at Long Bridge Drive).
  • 12th Street South from Long Bridge Drive to South Hayes Street – Includes exclusive bus lanes in the median, mixed traffic lanes, traffic signal upgrades, signage and pavement markings, and three stations (east and westbound 12th Street South at Elm Street, and eastbound 12th Street South at South Hayes Street).
  • South Hayes Street from 12th Street South to Army Navy Drive – This segment will connect to WMATA’s planned Pentagon City Center bus bays project on Army Navy Drive.

Learn about the difference between rush hour bus lanes and exclusive bus lanes – Understanding Transit Lanes

Public Process

Community Briefings

The project team has provided updates to the community about the progress and key milestones.

February 2019 Pop-Up Outreach

This pop-up outreach was part of the 30% design milestone, and featured the same materials as the November 2018 Open House. The pop-up occurred at the Crystal City BID Pop-Up Market.

November 2018 Open House

This open house updated the community on the project's scope and schedule at the 30% design milestone.

Read the meeting materials:

Review public comment received:

Environmental Review

Residents, business owners, building managers and bus riders were involved in the Transitway project’s environmental analysis and the design and locations of the Transitway stations. For more information about this public process, visit Crystal City Potomac Yard Transitway.

Project History

  • 2005: Interim Transit Improvements Plan for Crystal City/Potomac Yard corridor recommends a Transitway, and Crystal City/Potomac Yard Corridor Transit Improvements Project identifies 12th Street South for the alignment of the northern extension of the Transitway from Crystal City to Pentagon City.
  • 2009: Crystal City Multimodal Transportation Study, as part of the Crystal City Sector Plan process, studies transitway alignments and identifies 12th Street South as the corridor for future extension of the Transitway to Pentagon City.
  • 2010: County Board adopts the Crystal City Sector Plan, which identifies the alignment of the Transitway.
  • 2012: Crystal City Potomac Yard Transitway Operations Plan completed.
  • April 2016: Crystal City Potomac Yard Transitway opens.
  • 2016: County Board adopts the FY 2017-2026 Transit Development Plan and Capital Improvement Plan, which include the Transitway extension project with its alignment via 12th Street South.
  • 2018: County Board adopts FY 2019-2028 Capital Improvement Plan, which includes the Transitway extension project with its alignment via 12th Street South.


Arlington County’s FY 2019-2028 Capital Improvement Plan approved a budget of $27.7 million for this project. The Transitway extension is funded primarily by regional funds from the Northern Virginia Transportation Authority and state funds.


This project will extend the Crystal City Potomac Yard Transitway north and west to Pentagon City., Arlington, VA 22202  View Map

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