Interstate 73 (I-73) is an Interstate Highway, located within the U.S. state of North Carolina.
 It is part of a longer planned corridor, defined by various federal laws to run from Myrtle Beach, South Carolina, to Sault Ste. Marie, Michigan, but only the part south of West Virginia is under study as of 2012.
 The corridor passes through the states of South Carolina, North Carolina, Virginia, West Virginia, Ohio, and Michigan.
 Ohio and Michigan do not plan to build any part of the highway, as the I-73 corridor in both of these states is already served by existing freeways or 4-lane highways that will eventually be upgraded to freeways.
 West Virginia is building its section, mostly along U.S. Highway 52, as a four-lane divided highway, but not meeting the Interstate Highway standards.
 On the other hand, North Carolina and South Carolina have built sections and Virginia plans to build its part.
 Thus Interstate 73 will, once scheduled projects are completed, run from South Carolina to Roanoke, Virginia, where it will end at Interstate 81.
 Associated with these plans are those for the extension of Interstate 74 from Cincinnati to Myrtle Beach, with several highway overlaps contemplated.
Cherokee County Regional Airport (ICAO: KCNI) is a county owned public use airport in Cherokee County, Georgia, United States.
 It is located six nautical miles (7 mi, 11 km) northeast of the central business district of Canton, Georgia.
 The airport is adjacent to Interstate 575, about halfway between the city of Canton and the town of Ball Ground.
Interstate 476 (I-476) is a 132.1 mi auxiliary Interstate Highway in the U.S. state of Pennsylvania designated between Interstate 95 near Chester and Interstate 81 near Scranton, serving as the primary north–south Interstate corridor through eastern Pennsylvania.
 It consists of both the 20 mi Mid-County Expressway, locally referred to as the "Blue Route" (although no signs exist with that designation), through the suburban Philadelphia-area counties of Delaware and Montgomery, and the 110.6 mi Northeast Extension of the Pennsylvania Turnpike connecting the Philadelphia metropolitan area with the Lehigh Valley, the Poconos, and the Wyoming Valley.
 The Blue Route passes through suburban areas, while the Northeast Extension predominantly runs through rural areas of mountains and farmland, with development closer to Philadelphia and in the Lehigh Valley and the Wyoming Valley.
 I-476 intersects many major roads including Interstate 76 (the Schuylkill Expressway) in West Conshohocken, Interstate 276 (the Pennsylvania Turnpike) in Plymouth Meeting, U.S. Route 22 near Allentown, and Interstate 80 near Hickory Run State Park.
Interstate 35 (abbreviated I-35 or IH-35) in Texas is a major north–south Interstate Highway running from Laredo near the United States-Mexico border to the Red River north of Gainesville where it crosses into Oklahoma.
 Along its route, it passes through the cities of San Antonio, Austin, and Waco before it splits into two auxiliary routes just north of Hillsboro.
 Interstate 35E heads northeast where it passes through Dallas.
 Interstate 35W turns northwest to run through Fort Worth.
 The two branches meet up in Denton to again form Interstate 35, where it continues to the Oklahoma border.
 The exit numbers for Interstate 35E maintain the sequence of exit numbers from the southern segment of Interstate 35, and the northern segment of Interstate 35 follows on from the sequence of exit numbers from Interstate 35E.
 Interstate 35W maintains its own sequence of exit numbers.
Interstate 380 (I-380) is a short 1.7-mile (2.7 km) east–west spur Interstate Highway in the San Francisco Bay Area of Northern California, connecting Interstate 280 in San Bruno to U.S. Route 101 near the San Francisco International Airport (SFO).
 The highway primarily consists of only three intersections: I-280, El Camino Real (State Route 82), and U.S. 101.
 Like nearby I-280, I-380 never connects to Interstate 80, its parent Interstate Highway.
 However, there is no rule that says that spur routes need to.
 (Similarly, the spur route Interstate 795 branches off from Interstate 695, a beltway around Baltimore, and is only indirectly linked to Interstate 95.)
The Interstate Highways in Texas are all owned and maintained by the U.S. state of Texas.
 The Texas Department of Transportation (TxDOT) is the agency responsible for the day-to-day maintenance and operations of the Interstate Highways in Texas.
 The Interstate Highway System in Texas covers 3239.7 mi and consists of twelve primary routes, seven auxiliary routes and Interstate 35 (I-35) which is split into two branches, I-35E and I-35W, that provide access to both Fort Worth and Dallas.
 The longest segment of Interstate Highway in Texas is I-10 at 878.6 mi ; the shortest is I-110 at 0.9 mi .
Interstate 575 (I-575) is an Interstate Highway spur route in the United States, which branches off Interstate 75 in Kennesaw and connects the metro Atlanta area with the north Georgia mountains, extending 30.97 mi .
 I-575 is also the unsigned State Route 417 and is cosigned as SR 5.
 I-575 begins in northern Cobb County near Kennesaw and goes mostly through Cherokee County, ending at its northern border with Pickens County, where it continues as SR 515.
Interstate 75 (I-75) in the U.S. state of Georgia runs north–south along the U.S. Route 41 (US 41) corridor on the western side of the state, passing through the cities of Valdosta, Macon, and Atlanta.
 It is also designated—but not signed—as State Route 401 (SR 401).
 In downtown Atlanta, I-75 joins with I-85 as the Downtown Connector.
The Northwest Corridor Project (formerly Northwest Corridor HOV/BRT) is a Georgia Department of Transportation (GDOT) plan currently under construction to put HOV and Peach Pass toll lanes (and originally bus rapid transit) along Interstate 75 and Interstate 575 in the northwestern suburbs of metro Atlanta.
 It will carry commuters between Atlanta and Cobb County, and beyond in Cherokee County, Georgia by adding two lanes for high-occupancy vehicles along I-75, with one continuing up a dedicated HOV exit onto I-575 to Sixes Road (mile 11, former exit 6), and the other straight on I-75 to Hickory Grove Road, just past Wade Green Road (mile 273, former exit 118).
 North of the highway interchange where they split, the new lanes would be put in the road median, between the existing northbound and southbound traffic.
 From the Perimeter (Interstate 285 on the northside) to I-575, the road has already been built with 12 to 16 lanes, which will require other plans, including via eminent domain.
Ernest W. Barrett Parkway (more commonly Barrett Parkway) is a major thoroughfare in the northwestern part of the Atlanta metropolitan area, in the north-central part of Cobb County, in the U.S. state of Georgia.
 It travels from the southeastern edge of Kennesaw to a point north of Marietta, and continues on in both directions under other names.
 The portion of Barrett Parkway between Interstate 575 (I-575/SR 5) and US 41/SR 3 (Cobb Parkway) is designated State Route 5 Connector.
 The road is named after Ernest W. Barrett, the first chairman of the Cobb County Board of Commissioners in the 1960s, after home rule was enacted under a Georgia State Constitution amendment.
 The initial portion was constructed through Barrett family land, enabling it to be later sold for major development.

Question: What direction does the interstate run that Interstate 575 branches off of?
Answer: north–south