It’s just one of many that dates back more than a century to the days of the Olmstead Company, founded by urban planner Frederick Law Olmstead, none of which have gone much of anywhere. Now, a plan is emerging to turn the area from what one community leader called a “dumping ground” to what another described as “Baltimore’s next great waterfront.” This isn’t the first plan to transform these communities. The residents of the neighborhoods around the Middle Branch of the Patapsco River have long felt hemmed in by highways and railroads - cut off from the rest of Baltimore City.