70 ILCS 2205/14.3b

For purposes of this Act, territory to be organized as a sanitary district shall be considered to be contiguous territory, and territory to be annexed to a sanitary district shall be considered to be contiguous to the sanitary district notwithstanding that the territory to be so organized is divided by one or more railroad rights-of-ways or public easements, or that the territory to be so annexed is separated from the sanitary district by one or more railroad rights-of-ways or public easements. However, upon such organization or annexation, the area included within any such right-of-way or public easement shall not be considered a part of or annexed to the sanitary district.