. The route was realigned at the end of 2016. The only signage indicating route number are the small white rectangular signs in this picture.
State Route 209 (
SR 209) is the mostly
unsigned designation for Innovation Avenue, which from 1990 to 2015 ran 0.88 miles (1,420 m) from an intersection with
SR 28 (originally a signalized intersection, then from 2007 to 2015 a
right-in/right-out interchange with northbound SR 28) east to the Center for Innovative Technology (CIT) on the eastern edge of
Loudoun County near
Herndon. At the east end of SR 209, at the line between Loudoun and Fairfax Counties, Innovation Avenue continued east and north as SR 847 to SR 605 (Rock Hill Road). In Fall 2011, construction began on expansion of the SR 28 interchange to a full interchange. In January 2016, the entire route (including the SR 28 interchange) was closed in order to complete the full trumpet interchange and to realign the entire highway to access the CIT on its north side, instead of the south. The project was completed in early 2017. ==SR 212==