VDOT will be celebrating the completion of the Arlington Boulevard Interchanges project on September 17th at 10:00 am at North Fairfax Drive. It's unclear whether or not they will have a interchange shaped cake at the celebration.
This project improved the interchanges on Route 50 (Arlington Boulevard) at 10th Street and at Courthouse Road. These interchanges, constructed in the early 1950s, had been tightly spaced by today’s standards, with short acceleration lanes and insufficient capacity for current and future traffic volumes.
A bicycle trail was added eastbound on Arlington Boulevard from Pershing Drive to Rolfe Street, and the existing westbound trail was relocated and extended under the 10th Street bridge.
Heres a good photo of the trail.