FYI, there are a lot fewer restrictions as to what can be put on utility easement as opposed to public right of way, i.e. along the street or highway. In fact buildings can be placed on utility easements if there is enough space on the easement, it just depends on how the easement is written and agreed to by the utility and the property owner.
Size of the box has to be compliant with the highway or street jurisdiction. And, for what it is worth, the VRAD placed in my subdivision is much smaller than the original ones placed at the start of U-Verse.