MetroLink (reporting mark BSDA) is the light rail transit system in the Greater St. Louis area of Missouri and the Metro East area of Illinois. The system consists of two lines (Red Line and Blue Line) connecting Lambert-St. Louis International Airport and Shrewsbury, MO with Scott Air Force Base near Shiloh, Illinois through downtown St. Louis. The system features 37 stations and carries an average of 53,123 people each weekday.