 The two directions of US 460 continue along the collector-distributor lanes of I-81 east to the Interstate's partial cloverleaf interchange with US 11 and the eastern end of US 460 Bus., where US 460 exits into a concurrency with US 11.US 460 and US 11 follow a four-lane road with center turn lane toward the eastern end of Christiansburg, where the highways cross the Eastern Continental Divide from the New River watershed to the Roanoke River watershed.This road, named Roanoke Road and Lee Highway, reduces to two lanes plus center turn lane and then two lanes westbound, one lane eastbound as it descends the Pedlar Hills, also known as Christiansburg Mountain.