Pennsylvania Route 576

Pennsylvania Route 576 (PA 576), the Southern Beltway, is a partially completed tolled highway in the southern suburbs of Pittsburgh, Pennsylvania, United States. Upon completion it will serve as a southern beltway around the metro Pittsburgh area from the Pittsburgh International Airport to the historic Steel Valley of the Monongahela River.

The first section of the highway from Interstate 376 near Pittsburgh International Airport to U.S. Route 22 opened on October 11, 2006 at 3 p.m. Construction on a segment of the beltway that will link US 22 to I-79 near the National Cemetery of the Alleghenies is currently underway and planned for a 2019 opening, while the final segment from I-79 to PA Turnpike 43 is pending. Federal approval has been given for both segments. Although PA 576 runs north–south between I-376 and US 22, the route is signed as east–west to reflect the routing that the completed beltway will take; PA 576 will begin to have a more general east–west routing when the second leg to I-79 opens in 2019.