The reason for this temporary inconvenience is that the curent "up" escaltors, ES 413 and 416, are being closed so that the adjacent escalators, ES 412 and 415, currently under construction can be completed.
No word yet when ES 413 and 416 will be taken out of service for long term construction. Presumably after ES 412 and and 415 are fully back on line.
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aven't 413/416 been replaced already?
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