January 1858
The railroad line west from Janesville was finished to Monroe.
The regionGrade A · 1 independent source
The evidence
“The work of laying the track on the grade made by the Southern Wisconsin Conapany was begun immediately. On September 1, 1857, the line was completed to Brodhead, nineteen miles west of Janesville, and, in January, 1858, was finished to Monroe.”
1879-history-of-rock-county/10-rock-county-ch04-early-maps-courts-railroads.md, PDF p. 384 / book p. 388
Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.
Grade A: Found on a page of one of our sources
On the printed page (PDF p. 384 / book p. 388) · open the whole page