Last time I checked, the 5th Amendment to the Constitution and Oregon law condemnation proceedings provides money to those whose land has the pipeline buried in it.   Those people get paid the reasonable value of that easement as determined by a court and is not paid by Oregonians. 

You can't even see where the pipelines are after they are buried.  On I-5, the most recent pipeline crosses just south of the road to Lebanon near a creek.  There are little white candy cane shaped standards on each side of I-5.  You also see them on the road to Harrisburg just west of  where the railroad used to be.