The completion of the Silver Line has been delayed again.
The agency building the Metrorail extension through Tysons Corner says additional tests are needed on Phase 1 of the Silver Line. The Metropolitan Washington Airports Authority says it is working on software updates related to safety technology that will take several weeks to complete.
Phase I to Reston has been delayed once already — for eight weeks. This second delay likely will push the handover of the project to Metro into next year, possibly delaying the opening of the Silver Line into late winter or early spring.
The initial estimate had been that passengers would be riding the Silver Line by the end of 2013.