PHILADELPHIA (KYW Newsradio) — The world’s largest operating steam locomotive, Union Pacific’s Big Boy No. 4014, is coming to Philadelphia on July Fourth as part of its first-ever coast-to-coast tour to celebrate America’s 250th anniversary.
“It was an iconic machine even when it was built in 1941,” said Union Pacific spokesperson Robynn Tysver. “At that point in time, it was called Union Pacific’s miracle.”
Big Boy stands at nearly 17 feet tall, weighs 1.2 million tons, and has 7,000 horsepower. It carries about 75,000 gallons of water…