I am not bothered by the power lines, but they are there. They wouldn't show in a picture like taken above, they are high up (the kind on those large metal high voltage structures, not telephone poles), you would see them at about 45-60 degrees from horizontal, and even then, to me, they aren't a big deal, but several times hear I have read (and heard from one or two locals) "great hole, except for the power lines". Interestingly, the Indiana Toll Road borders the north end of the course, but can't really be seen due to a buffer of trees, but you can certainly hear traffic on the road.
Neither bother me, but I guess some golfers are more picky than others. I'll take a nice course that is well designed like Warren, even with a bit of encroachment from the real world. I mean, c'mon, the course had to be located next to campus (it is Notre Dame's course!), it is not like C&C had their choice of land over a one or two county area to choose from. It would be almost impossible nowdays to locate a course away from power lines, major roads or other pre existing structures.