Why is it the City Council can Order Trees to be cut, and dare I say if Graffiti is on a Private Home or Business a Code Infraction of some sort would be issued if the Graffiti was as Prolific as that on the Rail Crossing.
So... IF the Property is in Colton or Grand Terrace or in San Bernardino County's Jurisdiction, there should be an Abatement Order/Ticket and the matter should go to court. A letter writing campaign... we know how little the City Council Listens to Signed Petitions and Letters. They only hear Court Cases when brought before a JUDGE.
So Mr. Berry it is time to get off the pot and do the paper work. Write the Rail Road An Abatement Order, for causing and sustaining a public nuisance and eyesore. Perhaps you can start an Eminent Domain Case as it is clearly a case of Blight Outbreak. Send them a notice that you'll paint it and will add it to their property tax bill.