DENVER (CBS4)– The A and B Line trains were back in service before 5 a.m. Tuesday after an early morning service disruption that lasted about two hours. RTD blames the disruption on a power outage.

All service for A Line trains was halted about 2:40 a.m. and a bus bridge was put in place. RTD notified riders about the service on Twitter, email and on its website.

The A Line takes passengers between Union Station and Denver International Airport. Service to the B Line, which takes passengers between Union Station and Westminster, was not disrupted despite initial reports.

RTD advised all A Line train passengers to find another form of transportation. Technicians initially estimated that it could be close to noon before service was restored to the A Line.

It didn’t take that long. Service to the A Line was restored by 4:45 a.m. Tuesday. RTD said service to the B Line was not impacted and continued with service as scheduled.

Nate Currey with RTD told CBS4 that a power outage at the operations center near Interstate 70 and Interstate 25 at Fox Street went down.

It was the first such outage for the maintenance facility. Currey told CBS4 that Xcel Energy continues to investigate the cause of the outage.

Once power was restored, the main issue was with the server, which tracks the trains. The trains were always working properly but employees could not see any train routes in the system. RTD said it had trouble re-booting the server which tracks the trains which is why it delayed service.

All trains were back in service a couple of hours later. Bus shuttles were cancelled once train service was restored.

This is the latest in a series of mishaps that have resulted in numerous delays since the A Line opened April 22.


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