150th Anniversary of the Transcontinental Railroad's Completion in Downtown Rock Springs.
Union Pacific's historic steam locomotives - Big Boy No. 4014 and the Living Legend No. 844 - are touring the Union Pacific system throughout 2019 to commermorate the transconinental railroad's 150th anniversary.
The Big Boy's return to the rails is the product of more than two years of meticulous restoration work by the Union Pacific Steam Team. No 4014 is the world's only operating Big Boy locomotive.