News Union Pacific Big Boy 4014 Cross-Country Tour 2024: U.S. Railroad Celebration Hits East Coast and Midwest by Daniel Perez - News Editor June 10, 2026 by Daniel Perez - News Editor June 10, 2026 Union Pacific Big Boy No. 4014: 2024 Summer Tour Schedule and History The Union Pacific Big Boy No. 4014, the world’s largest operating steam locomotive, is embarking on the “Westward … 0 FacebookTwitterPinterestEmail