RALEIGH -An overturned tractor-trailer has closed all three lanes of southbound U.S. 220 at Creek Ridge Road, near mile marker 80, in Guilford County.The N.C. Department of Transportation said the accident happened this morning, and it could be late afternoon before the roadway is reopened. Because of the accident, Exit 218 on I-40 eastbound is closed until the area is cleared. Motorists can go around the accident site by continuing on I-40 East and existing onto I-85 Business southbound. For real-time travel information at any time, call 511, visit www.ncdot.gov/travel or follow NCDOT on Twitter at www.ncdot.gov/travel/twitter. Another option is NCDOT Mobile, a phone-friendly version of the NCDOT website. To access it, type "m.ncdot.gov" into the browser of your smartphone. Then, bookmark it to save for future reference. NCDOT Mobile is compatible with the iPhone, Android and some newer Blackberry phones.