Under Construction: I-66 Rosslyn Tunnel Rehabilitation in Arlington County

This project is rehabilitating and making improvements to the Rosslyn Tunnel that carries I-66 under North Nash Street, Fort Myer Drive, North Lynn Street and Gateway Park. The tunnel, nearly a fifth of a mile long, opened to traffic in 1983.

Improvements include:

• Removing the existing tunnel ceiling to improve long-term maintenance
• Upgrading electrical systems
• Installing a new fireproofing system
• Repairing steel beams, abutment and pier concrete, and joints
• Cleaning and repairing bearings
• Replacing the tunnel lighting system

The tunnel averages 64,000 vehicles a day.

Estimated Costs
Preliminary Engineering - $2 million
Construction - $35.7 million
Total - $37.7 million

This project is financed with state funding.

Benefits 

This project will improve safety and extend the overall life of the tunnel.

Major Milestones 

Begin Preliminary Engineering - January 2021
Advertise for Construction - April 2022
Award Construction Contract - July 2022
Begin Construction - September 2022
Final Completion - Mid-2025