ROCK HILL - Emergency services are on the scene of a crash on Route 17 eastbound near Rock Hill.According to the state Department of Transportation traffic website, as of 5:49 p.m. Friday both eastbound lanes of the highway were blocked between Exit 108 (County Route 173) and Exit 109 (Katrina Falls Road).Traffic is being diverted off Route 17 at Exit 108 to Holiday Mountain Trail, and back onto the highway at the 109 on-ramp.