Knoxville’s Streetscape project began last week. Assistant City Manager Dylan Feik says the frost was about 3 to 3 ½ feet deep, which made concrete removal difficult. Utilities were marked last week and the first layer of asphalt was removed. The warmer temperatures in the last few days have thawed that top 3 feet enough that crews were able to begin removal of concrete Monday, and he says the work on the deeper layers, including vaults and sewer, will progress as the ground thaws more.