The world’s largest steam train is passing through Illinois as part of its 10-state route across the United States this summer.
The locomotive, officially known as Big Boy No. 4014, is heading east across the Mississippi River starting in late May to help celebrate America’s 250th birthday.
Here’s what we know about the train’s stops in Illinois.
What is Big Boy No. 4014?
Delivered to Union Pacific in 1941, the locomotive was among 25 built to haul wartime freight across the Continental Divide in Wyoming and Utah. Big Boy is the last one running, and in the 1960s was converted to burn oil instead of coal.
Big Boy is 133 feet long and weighs 1.2 million pounds. It traveled more than 1 million miles during its working life hauling freight between Cheyenne and Ogden, Utah. The train typically draws large crowds of rail enthusiasts, and it’s common to see superfans with cameras in hand chasing it in cars.
“Union Pacific couldn’t be prouder to share this powerful piece of history with the nation and to be a part of America’s birthday celebration,” Union Pacific CEO Jim Vena said in a statement. “This tour celebrates our company’s rich 164-year history, our nation’s amazing story and the people who have helped build our great country and our railroad.”
When does Big Boy’s route begin? Where will it depart from?
The train will depart from Union Pacific’s headquarters in Omaha, Nebraska, on May 25.
This will be the first time it has crossed the Mississippi River since its westward delivery run in 1941, according to railroad officials.
Where is Big Boy stopping in Illinois? When will world’s biggest train be on display?
The train will stop at the Union Pacific Training Center in West Chicago on June 3. It will be on display south of the West Chicago Metra stop from 9 a.m. to 3 p.m. central time.
Admission is free, with no tickets required.
Where can residents watch Big Boy pass through Illinois?
Rail fans can also see the train in action at whistle-stops, generally lasting 15-30 minutes long.
The train will pass B Street Crossing in Sterling, Illinois, between 1:30 and 2 p.m. on Tuesday, June 2. It will then pass by Rochelle Railroad Park in Rochelle from 3-3:15 p.m.
After reaching its eastmost stop in Philadelphia, the train will then head back out west, passing by the Amtrak Depot in Springfield between 10:45-11:15 a.m. on Saturday, July 18. The last public view of the train in Illinois will be at Center St. Crossing in Girard between 1-1:30 p.m.
Full list of Big Boy stops
Big Boy will make the following stops on its journey out east:
Track Big Boy as it travels across the US
Union Pacific will provide a real-time location tracker for Big Boy, allowing rail fanatics to follow the train on its coast-to-coast tour.
When do tickets for Big Boy go on sale?
Union Pacific Museum patrons will have early ticket access beginning May 1 at 9 a.m. central time. Tickets will go on sale for the general public on May 4.
This article originally appeared on Journal Star: Huge ‘Big Boy’ train will stop in Illinois this summer. Where to see it
Reporting by Hannah Hudnall and Trevor Hughes, Peoria Journal Star / Journal Star
USA TODAY Network via Reuters Connect


