First, I am going to assume that if you are reading this article that you have multiple sections views, and right-of-way or easement lines that you would like projected to them. There are several different ways you can project objects to your sections views, but for this example I will use the 3D polyline method.
Assume that the red line above is a right-of-way line that you would like to project. You can NCOPY this into your corridor file (if it is being referenced in) and it is most likely a polyline so all we have to do is convert it from a 2D polyline to a 3D polyline. So in your ribbon go to the Modify tab. Then select Convert 2D to 3D Polylines.
Simple enough, now just click on any section view and in the ribbon choose Project Objects To Multiple Section Views.
You should see the dialog box below. Now just check the box for 3D polylines, set your Style, Elevation Options, and Label Style. You can see here all the different options that you have available to you for projecting objects to your sections views. But for now we are going to use 3D Polylines.