Haven’t been over that way to notice.
Which sections ?
Could be to decrease the deer/moose collision problem. With the minimal snow cover this winter the die-off was very low. Bib increase in deer population expected the year.
Let me know where you saw the fencing. I’ll see if I can find out anything sinister.
From portland traveling north on 295. the fence is on one side or another of the median. Not a barrier fence, not a safety fence.