If you were hoping to visit Union Pacific’s Big Boy, the largest steam locomotive in the world that’s still in operation, while it was in Philly, you may have just missed your chance. That’s because, as of 1:30 p.m., officials have ended the public display of the mammoth locomotive at the N avy Yard in South Philly due to excessive heat. In a statement online, organizers apologized for cutting the display short. Yet, if you’re still hoping to see the locomotive before it chugs on out of the state, Big Boy will be making a few more stops in Pennsylvania this coming week before it heads out to Ohio next week. A full schedule of Big Boy’s availability to the public can be found, here. America 250 Jul 3 Thousands line the tracks as Big Boy rolls through South Philly Berks County Jul 2 Over 100 people suffer heat-related emergencies at ‘Big Boy' stop in Berks Co. America 250 Jun 29 Where and how to see ‘Big Boy' in Philly Big Boy’s visit has proved popular as thousands lined the tracks last week to watch the locomotive make it’s way to South Philly. And, Sunday wasn’t the first time heat was an issue for those hoping to catch a glimpse of Big Boy. Last Thursday, over 100 people suffered heat-related emergencies when Big Boy stopped in Muhlenberg Township, officials said. This story uses functionality that may not work in our app. Click here to open the story in your web browser. ...read more read less