^Looking west from the western split with US Route 51 in Stoughton, February 2026.

Wisconsin Highway 138 is a short route in south-central Wisconsin, helping people access the city of Stoughton. The route is shaped like the number "7" if viewed on a map. The northwestern end is at an interchange with US Route 14 in Oregon. From this point of beginning, Wisconsin Highway 138 heads straight east to Stoughton. In Stoughton, US Route 51 comes from the north, and it turns easterly along Highway 138, long enough to tell the state highway, "I'll take it from here." US Route 51 continues east beyond Stoughton, stealing the thunder from the state highway. But Wisconsin Highway 138 has another mission: cutting south from Stoughton to meet Wisconsin Highway 59 in Cooksville. Highway 138 completes that mission, and the intersection at Highway 59 marks the conclusion of the route.

An older photo of Wisconsin Highway 138 formerly took center stage on this page, but that photo has been replaced by a newer, better photo. The older photo is still available for viewing on this page, though; I just moved it to the bottom.

My current photo for Wisconsin Highway 138 shows a guide marker for eastbound traffic, at a junction marking the eastern extent of its concurrency with US Route 51. In Stoughton, Wisconsin Highway 138 comes from the west and joins US Route 51, which bends from southward to eastward. Then, the routes split up at a point where Highway 138 decides to turn toward the south. At that split, drivers heading eastward will see this sign signaling the upcoming right turn that Highway 138 takes. This photo was taken in February 2026 on a day drive around southern Wisconsin.

My older photo for Wisconsin Highway 138 shows guide signage along US Route 14, using by northbound travelers making their way along the US highway.  The northwestern beginning of Highway 138 is accessed via an exit to the right. This photo was taken in August 2015 as I was navigating toward the Twin Cities.
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