The left lane of westbound Route 50 between Courthouse Road and 10th Street (see graphic) will be closed until July.
The closure, for a utility relocation project, is the first step of an effort to improve the notorious Route 50-Courthouse Road interchange.
VDOT may put additional temporary lane closures in place as needed. Drivers advised to expect delays in the area.
Meanwhile, Arlington County has released a video showing just how dangerous the Courthouse Road interchange is, apparently in an attempt to drum up federal stimulus dollars.