27-May-2013 -- From [43,-111], I continued south, passing over the beautiful Salt River Pass. I then crossed very briefly into Idaho, before reentering Wyoming, and following a road that passes alongside the Idaho-Wyoming state line. Then, at the small town of Cokeville, Wyoming, I took another road that headed southwest, towards the Idaho-Utah-Wyoming tripoint 'Monument'.
At [41.99833,-110.98132] I took the gated dirt road that was used by the first and third visitors. The gate is less than a mile east of the confluence point. The road is very rutted, and if you don't have a high-clearance vehicle, then I recommend that you hike it instead (as did the first visitor), rather than driving.
The dirt road passed just 0.13 miles north of the confluence point. From there it was an easy hike through sagebrush - into a small depression, and then back up onto a small ridgeline that slopes down towards the valley to the east. There is a very small rock cairn at the confluence point, and a 'geocache' jar in a nearby sagebrush bush.
After visiting the confluence point, I continued onto the ID-UT-WY tripoint. To do this, I drove back down the dirt road to the paved highway, turned right (south), and then headed a mile or so, until I saw a sign directing me to the "Monument". This took me along another gated dirt road (however, better quality than the one that takes you to the confluence point). If you go here, keep following the signs that direct you to the "Monument", which is at [42.00165,-111.04673]. (The second visitors hiked to/from the confluence point from near the tripoint Monument; however, it's easier to take the separate dirt roads for each.)