SkyTrain disruption: Expo Line single tracking between Columbia and Lougheed

Some SkyTrain commuters travelling on Expo Line can expect delays this morning due to a track issue near Braid Station.
TransLink says Expo Line is will be single tracking between Columbia and Lougheed.
Passengers travelling from Columbia past Sapperton Station will need to transfer trains at Braid Station, while passengers travelling from Production towards Waterfront will need to transfer at Lougheed Station. 
A shuttle bus is operating between Sapperton and Lougheed.
Millennium Line