Since I live there, I'm faced with the Hwy 100/Bluemound intersection everyday. And I never use it. Honestly it's not bad if you just use Potter to cut across to any number of streets, then just on Bluemound (if you're going west). Taking Wisconsin, the lane to turn left on Hwy 100 is always like a 3 light change wait. But if you turn right on Hwy 100, you can bypass everyone and take the first left on Potter. Then you only have one red light to wait at and sometimes it's green by the time you get there. Take a left on 109th, 112th, 115th, etc. and you come out on Bluemound, saving yourself at least 5 minutes, if not more. Unless you hit the train.