The historic steam engine known as Big Boy No. 4014 is scheduled to make several stops across Arizona on its tour across the Southwest.
The Union Pacific Railroad said there will be a public viewing from 9 a.m. to 3 p.m. on Oct. 18 in Tucson. Viewing is allowed from 25 feet away.
The engine will be in the state from Oct. 15 to Oct. 19 with stops in Yuma, Willcox, Bowie and Casa Grande.
This tour is called the “Great Race Across the Southwest” in celebration of the 150th anniversary of the first transcontinental railroad.
Big Boy engines were built in the 1940s and 1950s. No. 4014 was recently restored by Union Pacific after being retired in 1961.
Click here to learn more about Big Boy No. 4014.