I am not saying that the elevations can NOT be transferred over to those lines.
They can, however a lot of assumption and understanding of those assumptions would be needed prior to doing so.
For one..transferring the exact elevation farther left or right will change the cross slope.
Secondly, assuming that the slope as it exists is constant over to the line, is no guarantee that the slope is
constant or the project elevation is correct.
From a surveying or engineering perspective that is a little too much to leave to chance, and would be
safer to simply resurvey the area at the proper locations. From what I saw in the file most of
those elevations are NOT at the locations you want(ed) them to be at. I presume
that was supposed to be Center, right and left edges. And they are not at those locations.