Question: What is the name of the segment of US 78 that was designed to allow more direct connections between cities in the southeast?

Context articles: Interstate 22
U.S. Route 378
Stone Mountain Freeway
U.S. Route 78 in Georgia
Georgia State Route 10
Georgia State Route 10 Loop (Athens)
Georgia State Route 8
Georgia State Route 61
U.S. Route 78
Georgia State Route 274

Interstate 22 (I-22) is an Interstate Highway that follows the U.S. Route 78 (US 78) corridor on a 213 mi route from Byhalia, Mississippi south of Memphis, Tennessee, to Birmingham, Alabama.
 I-22 indirectly connects I-240, I-40, I-55, and I-69 in the northwest with I-65 and I-20/I-59 in the southeast.
 When designated in 2012, it was designed to close a gap in the Interstate network allowing more direct connections between cities in the southeast (such as Atlanta and Birmingham) with those of the Great Plains (such as Oklahoma City and St. Louis).
U.S. Route 378 (US 378) is a spur of US 78 in the U.S. states of Georgia and South Carolina.
 The U.S. Highway runs 234.30 mi from US 78, Georgia State Route 10 (SR 10), SR 17, and SR 47 in Washington, Georgia, east to US 501 Business in Conway, South Carolina.
 US 378 connects the Central Savannah River Area in both states with the Midlands and Pee Dee regions of South Carolina.
 The U.S. Highway's western portion, which connects Washington and Lincolnton in Georgia and McCormick, Saluda, and Lexington in South Carolina, is mainly a rural highway.
 US 378 is a major suburban and urban highway through Lexington and the South Carolina state capital, Columbia.
 The highway has a lengthy concurrency with US 76 between Columbia and Sumter and serves as a major route between the Midlands and the Myrtle Beach area, between which the highway has a business route through Lake City.
Stone Mountain Freeway is a freeway in the north-central part of the U.S. state of Georgia.
 It connects Interstate 285 (I-285) on the east side of Atlanta, with the suburbs of Stone Mountain and Snellville before transitioning into an arterial road that continues to Athens.
 The freeway is signed as U.S. Route 78 (US 78) for its entire length, with the western half signed as State Route 410 (SR 410), and the eastern half also being signed as SR 10.
 It begins at the US 29/US 78 split northeast of Decatur, and continues east through eastern DeKalb and southern Gwinnett counties.
U.S. Route 78 (US 78) is a 233.3 mi U.S. Highway in the U.S. state of Georgia.
 It travels west to east in the north-central part of the state, starting at the Alabama state line, west of Tallapoosa, where the roadway continues concurrent with the unsigned highway Alabama State Route 4.
 This is also the western terminus of Georgia State Route 8 (SR 8), which is concurrent with US 78 to the east.
 The highway serves the Atlanta, Athens, and Augusta metropolitan areas on its path from the Alabama state line to the South Carolina state line, at the Savannah River, on the northeastern edge of Augusta, where it continues concurrent with US 1/US 25/US 278/SC 121.
 This is also the eastern terminus of SR 10 and the northern terminus of SR 121, as well as the southern terminus of SC 121.
 US 78 travels through portions of Haralson, Carroll, Douglas, Cobb, Fulton, DeKalb, Gwinnett, Walton, Oconee, Clarke, Oglethorpe, Wilkes, McDuffie, Columbia, and Richmond counties.
State Route 10 (SR 10) is a 172.3 mi state highway in the U.S. state of Georgia.
 It travels from Downtown Atlanta to the South Carolina state line in Augusta.
 This highway, along with U.S. Route 78 (US 78), connect three of the biggest metro areas of the state together: Atlanta, Athens, and Augusta.
 It travels concurrently with US 78 in three sections: from Atlanta to Druid Hills; from near Stone Mountain to near Athens; and from Athens to its eastern terminus, for a total of 149.2 mi , or approximately 86.6 percent of its route.
State Route 10 Loop (SR 10 Loop, also known as Loop 10, Paul Broun, Sr.
 Parkway, or the Athens Perimeter) is a 19.1 mi state highway in the form of a beltway around much of Athens in the U.S. state of Georgia built to freeway standards.
 Much of the road is concurrent with other routes (including U.S. Route 29, US 78, US 129, US 441, SR 8, and SR 15) that travel through the Athens – Clarke County metropolitan area.
 It also carries the unsigned SR 422.
 Only US 78 Bus.
, SR 10, and SR 15 Alt.
 travel through downtown Athens.
 Inner/outer directions are used to sign the loop.
State Route 8 (SR 8) is a 183 mi state highway that travels west-to-east through portions of Haralson, Carroll, Douglas, Cobb, Fulton, DeKalb, Gwinnett, Barrow, Clarke, Oconee, Madison, Franklin, and Hart counties, bisecting the northern part of the U.S. state of Georgia.
 The highway travels from its western terminus at US 78 and SR 4 at the Alabama state line west of Tallapoosa to its eastern terminus at US 29 at the South Carolina state line at the south end of Lake Hartwell.
 The highway is concurrent with either US 29 or US 78 for its entire length.
State Route 61 (SR 61) is a 107.1 mi state highway that travels south-to-north through portions of Carroll, Douglas, Paulding, Bartow, Gordon, and Murray counties in the western and northwestern parts of the U.S. state of Georgia.
 The highway connects the Carrollton area with the Tennessee state line, via Villa Rica, Dallas, Cartersville, and Chatsworth.
 The portion of the highway from just northeast of Carrollton to Villa Rica was formerly the path of US 78S.
 When that highway was decommissioned, it was redesignated as US 78 Alternate.
U.S. Highway 78 is an east–west United States highway that runs for 715 miles (1,151 km) from Memphis, Tennessee, to Charleston, South Carolina.
 A segment of US 78 from near Memphis, Tennessee, to Birmingham, Alabama, is designated as Interstate 22.
State Route 274 (SR 274) is a west–east arc-shaped state highway located completely within the city of Temple in the northwestern part of the U.S. state of Georgia.
 From its western terminus, the route loops from US 78/SR 8 into downtown Temple, briefly becoming concurrent with SR 113, then exits downtown to meet its eastern terminus, again at US 78/SR 8.