South Boston rail line gets a shed

John Keith snapped a photo of a new shed and siding near Cypher Street that the MBTA is having built along Track 61 - a former freight line and the last rail connection to the South Boston Waterfront - where the T will test those new Red Line trains we should see someday.

And he wonders why the T needs a shed and new tracks alongside the tracks it was already planning to outfit for subway-car testing.

The T's Joe Pesaturo points him to slides 5 and 6 on a new-car summary, says the shed is for "static" testing of the cars - not everything that needs testing is done while the cars are rolling.