After Pearl Street, street running ends and the lines return to private right-of-ways. The four lines diverge at a wye, with the Green Line diverging to the southeast while the Red, Blue and Orange Lines turn north, cross the Good-Latimer Expressway at grade, and descend into a long tunnel under the Central Expressway (US 75), with a stop at Cityplace. The lines exit the tunnel at Mockingbird. The Blue Line diverges from the Red Line and heads east, while the Red and Orange Lines turn north.