Although originally identified as the western terminus of the Orange Line in the 1968 plan, by 1978 Fairfax County was debating whether the initial terminus should be at the Vienna location or at another location in Tysons Corner. After much public debate and public comment, the Fairfax County Board of Supervisors endorsed the Vienna routing. The endorsement was made after determining it would cost an additional $59 million and take another five years to complete the line to Tysons. (Metro service to Tysons Corner would be established, with the 2014 opening of the Silver Line).