St. Clair County Transit District (SCCTD) and Bi-State Development propose to extend the existing MetroLink light rail transit (LRT) line in St. Clair County, IL from its current terminus at Shiloh-Scott Station (Scott Air Force Base) to the MidAmerica St. Louis Airport (Mascoutah, IL). The project will also include an adjacent public access road and a multi-use path as part of the regional MetroBikeLink system. Existing utilities within the Project area, including an electric transmission line and high-pressure gas line, will be relocated to the southern limits of the project through the Silver Creek floodplain. The proposed action is needed to support the growing MidAmerica St. Louis Airport and complement adjacent existing and planned land development.