Quote:
Originally Posted by Busy Bee
Only the southbound track will be used in revenue service. Whether they physically remove the northbound track I don't know. It may be kept for redundancy, equipment movements or temporary storage but is unlikely to ever be used again for Kimball trains with passengers.
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I would imagine they keep it for redundancy. If they ever need to take Track 4 out of service (i.e. 3-tracking at Belmont) then northbound Brown Line trains won't be able to access the flyover.
But they will probably replace/upgrade all the trackwork at Clark Junction as they rebuild the Main Line structure between Belmont/Addison in phase 2.