First Railway Reaches Chicago

On June 30, 1846, the Galena and Chicago Union Railroad inaugurated service on its pioneering 8-mile segment westward from Chicago, marking the city's entry into the railroad age. Powered by the diminutive locomotive Pioneer, the line overcame swampy terrain and financial hurdles to connect the growing metropolis with western grain markets. This modest beginning laid the foundation for Chicago's emergence as the nation's rail hub, eventually linking to the Illinois Central and other transcontinental routes. Key figures included engineer John B. Turner, whose vision transformed prairie commerce.