SR 218 begins in Falmouth at the intersection with US 1 (Jefferson Davis Highway) and US 17 Business, which joins US 1 south to cross the Rappahannock River into Fredericksburg and heads west as Warrenton Road to reconnect with US 17 at Interstate 95.
SR 218 starts in Falmouth, connecting to US 1 and US 17 Business before crossing the Rappahannock River into Fredericksburg and rejoining US 17 at Interstate 95 via Warrenton Road.