Kingsport has just under 500 miles of concrete and asphalt streets. Last year the city embarked on a program of sustainable paving for every mile of street every 20 to 25 years rather than the previous 50 to 55 years. Recent projects include repaving parts of West Center, Ridgefields, Rivermont, Fiddler’s Way and Barnett Drive, and work is underway in the Lynn Garden neighborhood. The cost for the program is about $2 million a year, and to sustain it, the city is tapping into the millions of dollars it receives through what is in effect a new city tax, the franchise agreement with Appalachian Electric Power. But is it enough?