| 1960 – 1990s|
| US 17 Bus. near Springmaid Beach|
US 17 Bus. near Grande Dunes
Horry County, South Carolina
South Carolina Highway 73 (Ocean Boulevard) is a former state highway running along the Atlantic coast in Myrtle Beach, South Carolina.
South Carolina Highway 73 Wikipedia
South Carolina 73 began and ended at US 17 Bus., with the southern terminus at Springmaid Beach and the northern terminus at Briarcliffe Acres.
Ocean Boulevard is a major point during the annual Bi-Lo Marathon; full and half marathon runners head south during the first loop of the course, and for full marathon runners only, they head northbound for the second loop. Together, about nine miles (14 km) of the entire marathon course is run on Ocean Boulevard.
SCDOT handed SC 73 over to the city of Myrtle Beach in the 1990s and is no longer an official state route. As such, the route is no longer signed and, as of 2008, the route no longer appears on the official state highway map.
The entire route is in Horry County.