The Union Pacific Big Boy locomotive #4014, is set to leave downtown Saint Louis, heading west, on Monday, August 30.
According to Union Pacific, the locomotive is scheduled to be on display in St. Louis on Sunday, August 29 from 9 a.m. to 3 p.m., departing Monday, August 30, at 8 a.m., heading west, toward Maplewood.
There are eight surviving Big Boys, with most on static display at museums. One of them, #4014, was re-acquired by Union Pacific and rebuilt to operating condition in 2019, regaining the title as the largest and most powerful operating steam locomotive in the world.
In 2016 Union Pacific steam locomotive #844 precviously passed through Maplewood in 2016.