Traffic from Lenoir to Blowing Rock has been hampered by a rock slide. U.S. 321 remains closed in both directions in northern Caldwell County due to a rock slide from heavy rains on April 11^th.  The NCDOT reports the road will remain closed until Sunday night. The closure is having an impact on drivers traveling from Lenoir to Blowing Rock. The Hwy 321 road closure is also affecting traffic in Catawba, Gaston and Lincoln counties.