Complex sentence: The route serves mainly as a spur from NC 105 to Banner Elk (Tynecastle Highway/Shawneehaw Avenue); in the mid- 1980s, it was extended as the main route to Beech Mountain from Banner Elk (Beech Mountain Parkway).
Split into simpler sentences: The route serves mainly as a spur from NC 105 to Banner Elk (Tynecastle Highway/Shawneehaw Avenue). In the mid- 1980s, it was extended as the main route to Beech Mountain from Banner Elk (Beech Mountain Parkway).