UPDATED: Phase 1 Silver Line "substantially complete!"

Martin Di Caro, WAMU 88.5 radio news, reports on Twitter that builders say Silver Line to Wiehle is "substantially complete."

UPDATE 5:30PM: Martin Di Caro ‏@MartinDiCaro 50m

BREAKING: Top #SilverLine project official says minor issues with Automatic Train Operation system have to be resolved (cont.) @wamu885news

Retweeted by WAMU 88.5 News

Martin Di Caro ‏@MartinDiCaro 34m

BREAKING: Dulles Transit Partners says #SilverLine has reached substantial completion, can hand project to Metro. @wamu885news #MWAA

from Alexandria, VA 

Retweeted by WAMU 88.5 News

Martin Di Caro ‏@MartinDiCaro 33m

MORE: #MWAA now has 15-days to review the finding of substantial completion, then Metro can get #SilverLine. @wamu885news

from Alexandria, VA 

Watch for news coverage to follow.

UPDATE 3:15PM:  RestonNow provides a great deal more detail in this news article:  "Silver Line “Substantial Completion” a Big Step Toward Opening.

We find it difficult to believe that a problem with the Automatic Train Operation system--which is intended to stop the train in an emergency among other purposes--is a minor issue.