Drivers should start to see signs of construction along I-66 outside the Capitol Beltway this spring, according to Fairfax County officials who just released a comprehensive overview of the project.

The Fairfax County government on Tuesday published a detailed rundown of the work expected along the 22.5-mile stretch of I-66, including information on what travelers can expect while construction is going on.

Drivers should see the first wave of work begin this month right at I-66 and I-495 and on both sides of I-66 between Chain Bridge Road (Route 123) and east of Waples Mill Road. Additionally, work will begin on Route 28 north of I-66 between Westfields Boulevard and north of Braddock and Walney Roads. Drivers can also expect to see work near Route 29 in Gainesville.

Here’s what Fairfax County wants you to know if you are driving on I-66:

-Initial traffic shifts will move the travel lanes on I-66 toward the center of the roadway to allow construction crews to work safely on the outside shoulder area of I-66 (righthand side for drivers).
-Four travel lanes remain open during peak travel periods.
-Multiple lane closures during overnight periods and on weekends.
-The “red X” signs in use between Route 50 and I-495 will be taken out of service as traffic is shifted.
-HOV-2 regulations on I-66 will remain in effect weekdays from 5:30-9:30 a.m. in the eastbound direction and 3-7 p.m. in the westbound direction.

This project is expected to take many years to complete. New express lanes on this section of I-66 are expected to be in place by 2022.

Here’s a full rundown of the I-66 project that was presented to the Fairfax County Board of Supervisors at the end of February.