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(Updated at 10:40 a.m.) Big changes are finally coming to the intersection of N. Glebe Road and Lee Highway.

The Arlington County Board will consider a project to add left turn lanes to Glebe approaching the busy intersection. Also part of the project: undergrounding utilities, upgrading bus stops and streetlights, and replacing an old water main.

Currently, northbound and southbound traffic on Glebe each gets its own green light, allowing unobstructed left turns. The new turn lanes will allow simultaneous green lights, thus improving traffic flow and giving pedestrians more time to cross the street, according to a county staff report.

The construction will come with a steep price tag: between $3.4 and 3.9 million. The Board is set to vote on a contract with the low bidder, Rustler Construction, Inc., at its meeting this Saturday.

The first phase of the project, including utility undergrounding, kicked off in 2017. The county has spent years obtaining easements from property owners along Glebe, allowing the roadway expansion, which has general support from local residents.

“There is broad public support for this project because it is significantly improving multimodal mobility and access without any trade-offs aside from construction disruptions and right-of-way impacts,” says the staff report.

“During the lengthy easement acquisition process, the design was revised many times to accommodate surrounding property owners’ requests for considerations such as minimizing the amount of offstreet parking lost, maintaining existing driveway accesses, adding landscaping, and shifting bus shelter locations to not hinder the visibility of commercial monument signs.”

One slightly controversial aspect of the project is the LED streetlights Dominion plans to install.

“Several community members and stakeholder groups have expressed concern with the aesthetics and character of the streetlights selected for the project area – Dominion Energy maintained cobra LED style lights,” the staff report says.

“These lights were selected for the project area by the County’s Streetlight Management Plan (SMP)… Cobra LEDs are preferred for both the Lee Highway (Route 29) and Glebe Road (Route 120) project corridors because they more efficiently illuminate higher speed, wider arterial roadways than post-top lights, thus resulting in needing approximately 30% fewer light poles (and sidewalk pole obstructions) in the project area.”

More on the project from county staff:

The project will widen North Glebe Road (Route 120) to add northbound and southbound full-width left turn lanes. The widening of the street necessitated undergrounding the overhead utilities present throughout the project area. Crews began the utility undergrounding work in January 2017 and are nearing completion of this phase.

The subject intersection improvements will improve safety and mobility for motorists, pedestrians, and transit riders at the intersection, as well as reduce cut-thru traffic along adjacent residential neighborhood streets. Following construction of the new left turn lanes and replacement of the traffic signal equipment, the implementation of a new signal phasing and timing plan will significantly decrease vehicle, transit, and pedestrian travel times through the intersection.

The project is also replacing and upsizing over 1,750 LF of old cast iron water mains in the project area and is upgrading the five (5) existing bus stops with new amenities, pads, and shelters (installed by separate project), as well as installing empty underground conduits giving the shelters the capability to be equipped with real-time transit arrival boards if warranted in the future.