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The What?
The Leading Through Interval (LTI) pilot introduces a new signal timing strategy that creates a brief interval at the start of the signal phase.
During this interval, vehicles traveling straight (or "through") are allowed to proceed, while turning movements are temporarily paused. At the same time, pedestrians and cyclists are be permitted to cross during the active “walk” signal. Once the LTI ends, turning vehicles are allowed to proceed.
Pilot Project Goals
The goal of this pilot is to reduce conflicts between turning vehicles and pedestrians/bicyclists in the crosswalk, enhancing safety and visibility for all road users.
This pilot project is currently active at the following locations:
- Wilson Blvd & N Lynn St
- Washington Blvd & 10th St N
The pilot locations were chosen due to the geometry and existing dedicated turn lanes, as well as crash histories and the high volumes of pedestrian and vehicle activity.
We are seeking feedback on the Leading Through Interval pilot project. This feedback form runs through Monday, June 1st.
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There are regional land local projects taking place within and on the edges of Arlington County. Read and plan ahead to find different routes to get around.
Teddy Roosevelt Bridge Ramp Closures
From the District Department of Transportation
Beginning tentatively May 15, 2026, the District Department of Transportation (DDOT) will temporarily close the southbound ramp from George Washington Parkway to I-66 eastbound Theodore Roosevelt Bridge. This ramp closure will remain in place through mid-August 2026. Note, the ramp access to westbound US 50 (Rosslyn) will remain open during this period.
Visit the Theodore Roosevelt Bridge rehabilitation project page to learn more.
 Arlington Ridge Road/Mount Vernon Avenue Bridge Closures
From Saturday, May 16 to Saturday, May 23, the Arlington Ridge Road/Mount Vernon Avenue Bridge will close during off-peak hours to allow crews to install and secure steel beams as part of the reconstruction of the west side of the bridge.
Bus stops on Mount Vernon Avenue between West Reed Avenue and South Glebe Road will close. Metrobus routes A11 and A12 will detour via West Glebe Road.
About the Project
Learn more on the Arlington Ridge Road/Mount Vernon Avenue Bridge reconstruction project page.
 George Washington Memorial Parkway and Mount Vernon Trail Detours
While construction at the Long Bridge Bridge project is underway, expect trails on the George Washington Memorial Parkway and the Mount Vernon Trail.
Visit the project page for more details.
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