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The biggest steam locomotive is whistle-stopping across the U.S.

Thousands are flocking to see the Big Boy steam locomotive! This 1940s-era giant is making a rare cross-country trip, drawing huge crowds of train fans.

Marcus Okafor
Marcus Okafor
·3 min read·Philadelphia, United States·3 views

Originally reported by NPR News · Rewritten for clarity and brevity by Brightcast

Why it matters: This historic locomotive's journey brings joy and a tangible connection to American history to communities across the U.S.

Union Pacific Railroad's Big Boy No. 4014, the world's largest operating steam locomotive, is touring the U.S. The tour celebrates America's 250th birthday. The train traveled east from Wyoming to Philadelphia for the July 4th weekend.

A Grand Sight

On a very hot day, dozens of people gathered at Valley Forge National Historical Park. They waited by the tracks to see the train. Many brought chairs and coolers. John Seibert, from a model railroad club, called it a "once-in-a-lifetime experience."

People used their smartphones to track the train's progress. The whistle could be heard from miles away. Then, headlights appeared in the distance. The Big Boy, 133 feet long and weighing 1.2 million pounds, roared past. Its bells rang and whistle blared.

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Seibert said it was "pretty amazing." He noted the whistle "kind of went right through you."

Days later, the engine 4014 and its 18-car train parked at Philadelphia's Navy Yard. Crowds could see it up close. Fifteen-year-old Brandon Westerfield from New Jersey came with his mother. He called it "huge" and "so cool to see something that big right in front of you." His mother, Althea, was also impressed, saying, "this is absolutely incredible."

Union Pacific’s Big Boy No. 4014, the world’s largest operating steam engine locomotive, is seen during a stop in Philadelphia, Pennsylvania on Sunday, July 5, 2026. As part of the celebration for America’s 250th anniversary, the steam engine train was on tour for public display in multiple cities and states across the United States.

Train enthusiast Brandon Westerfield, 15, stands for a portrait with his mom, Alethea Westerfield, 47, in front of Union Pacific’s Big Boy No. 4014.

The Train's History and Its Engineer

Union Pacific ordered twenty-five Big Boy locomotives between 1941 and 1944. They were used to haul freight through the Wasatch Mountains in Utah and Wyoming. These engines had a special design to handle curves and two sets of pistons. The last Big Boy was retired in 1962, replaced by diesel engines.

Eight Big Boys were saved, but only number 4014 is still running. Ed Dickens, senior manager of Union Pacific's Heritage Operations, oversaw its restoration. He also serves as the train's engineer.

Ed Dickens, the senior manager of Union Pacific Heritage Operations, looks out to the crowd of attendees from Union Pacific’s Big Boy No. 4014, the world’s largest operating steam engine locomotive, during a stop in Philadelphia, Pennsylvania on Sunday, July 5, 2026. Dickens is the head the steam program at Union Pacific, and was responsible for the leading the team to restore Big Boy No. 4014.

A detail of Union Pacific Locomotive No. 1616, a commemorative train car honoring President Abraham Lincoln, is seen connected to Union Pacific’s Big Boy No. 4014.

Dickens, often seen in overalls and a cap, operates the 7,000-horsepower engine. He noted that the train is "all manually operated, there's nothing automatic." Fans appreciate his friendly approach. Matt Zollers from Pennsylvania called him a "super ambassador" who takes time to talk to everyone.

Ed Dickens, the senior manager of Union Pacific Heritage Operations, is seen speaking during an interview during a stop for the Union Pacific Big Boy No. 4014 in Philadelphia.

Joe Stefankiewicz, 37, of Aston, Pennsylvania, holds a signed model train car for his son, Joey, 5, in front of Union Pacific’s Big Boy No. 4014, the world’s largest operating steam engine locomotive, during a stop in Philadelphia.

Dickens finds joy in the crowds. He said, "seeing the happiness, seeing the crowds is something that's just spectacular for us." Nearly 100,000 people visited the Big Boy in Philadelphia over two days.

An attendee wears a t-shirt commemorating Union Pacific’s Big Boy No. 4014.

The Big Boy is now heading back to Wyoming. It will make stops in Pennsylvania, Ohio, Illinois, Missouri, Kansas, and Colorado. Dickens reminds people to stay safe. He advises, "Always 25 feet back." The train's whistle will also serve as a warning.

Brightcast Impact Score (BIS)

This article celebrates a positive action by Union Pacific in touring the Big Boy locomotive, bringing joy and historical appreciation to many. The event is a notable achievement in preserving and showcasing a piece of American history, generating significant public interest across multiple states. While not a new solution, it's a well-executed public engagement effort.

Hope19/40

Emotional uplift and inspirational potential

Reach18/30

Audience impact and shareability

Verification15/30

Source credibility and content accuracy

Moderate
52/100

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Sources: NPR News

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