Low restraint track: a proven alternative

摘要

The Frankford Elevated reconstruction of the superstructure and track system will be complete this spring after eight years. During this period the five mile long elevated transit system has operated on all but one rush hour, providing weekday commuter service to over 100,000 residents of Northeast Philadelphia. The old, deteriorated structure and ballasted track system have been replaced with new precast deck sections and direct fixation track supported on new steel stringers.