From the Dulles Corridor Metrorail Project:
Construction to Slow Traffic at Magarity, Olney Intersection in Pimmit Hills/McLean to One Lane Daytimes April 27-May 13
Beginning on or about Wednesday, April 27, Magarity and Olney roads will be reduced to one lane where these busy roads intersect in the Falls Church/McLean area. Dulles Metrorail crews will be restoring the curb line and gutter and installing a new storm drainage pipe.