The slabs are remnants of properties damaged or destroyed by Hurricane Katrina in 2005. The state bought the properties from hurricane-affected homeowners who did not want to rebuild there.
Mike Taylor, with the Louisiana Land Trust, said in a news release Monday that the removal cost is expected to be $10 million.
Parish President Craig Taffaro says it will be more feasible to bring back neighborhoods when the slabs dotting them are removed.
The parish says the program should be finished in less than a year.