Alas, running the dozers costs money. A lot of money. Unfortunately we are in a state that is now #1 in unemployment, faces annual government shutdowns because of lack of funding, with these pieces of land being inside of cities that are well known for being so far beyond broke that it makes the most seasoned economist cringe. Add in the decades of cronyism, still inflated spending, corruption and ever decreasing revenue - dozing the areas just isn't a viable option.