Pennsylvania Route 476, also known as the Blue Route, is a major highway in Pennsylvania that runs through the southeastern part of the state. It stretches approximately 21 miles, connecting Interstate 95 in Broomall to Interstate 76 in Plymouth Meeting. The route primarily serves as a commuter corridor, facilitating travel between suburban areas and the city of Philadelphia. The highway features multiple interchanges and is designed to alleviate traffic congestion in the region. Opened in the 1970s, Route 476 has undergone various improvements over the years to enhance safety and efficiency. It is an essential part of the state's transportation network.