Complex sentence: That section of the roadbed located in Sangamon County, Illinois has been rededicated to rails-to-trails use and will serve as the right-of-way for the proposed Sangamon Valley Trail.
Split into simpler sentences: That section of the roadbed located in Sangamon County, Illinois has been rededicated to rails-to-trails use. Part of the right-of-way is now serving as the Sangamon Valley Trail.