By 1963, the road was paved to about halfway between Oconee and its northern terminus, and by 1966, the road was paved the rest of the way.
The road was paved to about halfway between Oconee. This was by 1963. The road was paved to about halfway between its northern terminus. This was by 1963. The road was paved the rest of the way. This was by 1966. This was by 1963.