Blue Line service along the Chicago Transit Authority's O'Hare branch will resume at 3 a.m. tomorrow, four days ahead of schedule.<br /><br />"We commend the CTA for making this important project a priority," said Aviation Commissioner Richard L. Rodriguez.<br /><br />"Faster rail service to and from our airport will greatly benefit O'Hare travelers and employees."<br /><br />The Blue Line between the CTA's Rosemont and O'Hare stations closed July 8 for crews to replace deteriorated rail, tie plates and spikes.