Inverse Condemnation

This legal action does not require a physical taking, but can be based upon proof of considerable diminution in value of property due to governmental action. In my case, the value of my lot has been diminished greatly due to the expansion of the adjacent freeway, a change of zoning to one which requires a larger size lot than my lot, and also an allegation by the city that it was the result of an unlawful division. I have had my lot listed for about a year and a half now.. and also tried to get hard money loans on it for the past six months with no success in either avenue. It is clear that the lot has suffered due to the factors aforementioned. In addition to those factors, workers / employees of the city, state, and county have all trespassed persistently on my property, despite warnings issued and no trespassing signs posted. On visits to my lot, I have found the boundary marking tape torn down, the no trespassing signs ripped off, and new tire treads crossing the lot once again.
Where is the justice due me as a property owner? Where are my civil rights? Where is the fair and democratic governmental processes we all believe should be provided to all citizens? I am not seeing it anywhere.