Draft:Milwaukee Subdivision
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Comment: This article relies exclusively on self-published or primary sources. Instances of significant coverage in reliable, independent, secondary sources are necessary to show this subject meets Wikipedia's notability guidelines. Trainsandotherthings (talk) 12:41, 10 May 2026 (UTC)
| Milwaukee Subdivision | |||
|---|---|---|---|
.jpg) Union Pacific 844 at Proviso Yard, one of the termini of the line | |||
| Overview | |||
| Owner | Union Pacific Railroad | ||
| Coordinates | 42°12′57″N 87°44′05″W / 42.2157°N 87.7348°W | ||
| Termini | |||
| Service | |||
| Type | Freight rail | ||
| Operator | Union Pacific Railroad | ||
| History | |||
| Commenced | 1906 | ||
| Completed | 1911 | ||
| Technical | |||
| Line length | 101.3 mi (163.0 km) | ||
| Track gauge | 4ft 8.5in standard gauge | ||
| |||
The Milwaukee Subdivision is a railroad line owned by Union Pacific that starts in Milwaukee, Wisconsin at the Butler Yard and ends near Elmhurst, Illinois at the Proviso Yard.
History
In 1903, the Chicago Northern, a subsidiary of the Chicago and North Western Railway, built a backup line from Valley in Northbrook, Illinois, to Tower KO, in Lake Forest. This was due to the route along the shore being congested with passenger service. In 1906, the Milwaukee Shoreline Railway, built the second segment from Tower KO to Saint Francis in Wisconsin. This marked completion of the "New Line" section into Milwaukee. Another subsidiary, the Des Plaines Valley Railroad, built the segments from Proviso to Deval (short for Des Plaines) to Valley in 1911 to 1912. Shortly after construction, all entities mentioned were absorbed into the C&NW.
In 1960, the New Line connection was downgraded to a single track.
In 1995, when the Union Pacific Railroad acquired the C&NW, all trackage rights went to them.[1]
Termini
Butler Yard
The Adams Subdivision and the Shoreline Subdivision meet north of the yard. There is a switch on both ends of the lines, with railroad crossings on both the west and east sides of Silver Spring Drive.[citation needed]
South of the yard starts the actual subdivision, which runs south then east then south for the rest of the line.[2] On the east turn there is a junction which leads to an industrial spur that runs west which leads to the New Berlin Industrial Park in New Berlin, Wisconsin. The spur, which runs parallel to the New Berlin Trail, ran all the way to Waukesha, Wisconsin until 2015, when the Les Paul Parkway crossing was removed. The Springdale Road crossing was removed after 2017.[3]
In far-northern St. Francis, Wisconsin, there is a switch that directs a train to the Kenosha Subdivision.[2][1]
Proviso Yard
The Proviso Yard is a rail yard in Proviso, Illinois[4], an unincorporated community of Elmhurst, Illinois. The subdivision ends here and starts the Geneva Subdivision moving east. There is also a junction that leads to the Indiana Harbor Belt Mainline either north or south.
There is also a junction where a train can run west on the Geneva Subdivision west of the yard. [citation needed]
References
 | This article needs more citations. (December 2025) |
- ^ a b "RAILROAD OPERATING INFORMATION". www.chicagorailfan.com. Retrieved 2025-12-18.
- ^ a b "Geography Tool Shed : Milwaukee (UP) Subdivision". geography.brucemyers.com. Retrieved 2025-12-18.
- ^ "Union Pacific Railroad Company-Discontinuance of Service Exemption-in Waukesha County, Wis". Federal Register. 2015-04-08. Retrieved 2025-12-17.
- ^ "Union Pacific Third Mainline – Proviso Yard". CREATE Program. Retrieved 2026-01-20.
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