 When the road was completed, it replaced Old Socastee Highway (former routing of South Carolina Highway 707) between Pine Island Road and U.S. 501 as well as Central Parkway at Broadway at the Beach between 21st Avenue North and 29th Avenue North.Robert Grissom Parkway is based on a road planned as early as 1979.In 1996, sections of Central Parkway, a road planned by Burroughs & Chapin, were already complete between 21st Avenue North and 38th Avenue North, and between 44th Avenue North and 48th Avenue North.