The new silver line metro expansion is expected to be completed around September — instead of its July 2020 goal.

Testing is already underway for the new trains, and Fairfax County reported earlier this month that the project is about 97% complete, but several structural issues hinder project completion, according to WTOP.

The concerns revolve around cracks in concrete outside the station, deterioration of panels framing the station and uneven tracks where trains cross one another, WTOP reported in November.

“The Metropolitan Washington Airports Authority and its contractors who are building the rail line are confident the concrete panel issues have been addressed with protective sealant, which will be reapplied approximately once every 10 years,” according to WTOP.

Now, final construction continues around Reston and Herndon.

The Innovation Center Station garage is 92% complete, $5 million under budget and is expected to be completed in February, according to Fairfax County’s Department of Transportation (FCDOT).

For the Innovation Center Station itself, FCDOT staff told the Board of Supervisors earlier this week that crews were working on fixing communication systems and placing art in the north pavilion.

At the Reston Town Center Station, crews were installing speakers in the ceiling and working on stormwater management.

Photo via Fairfax County