Blue and Orange Line Metro trains are single-tracking through parts of Arlington due to a cracked rail at Rosslyn. As of 11:55 a.m., Metro crews were reported to have repaired 50 percent of the crack.

From WMATA:

Blue and Orange line trains are experiencing delays due to a cracked rail at Rosslyn.  At this time, Orange Line trains are single tracking between Ballston and Foggy Bottom, and Blue Line trains are single tracking between Arlington Cemetery and Foggy Bottom.

An estimated time of repair will be provided when known.

Customers traveling on the Blue or Orange line during today’s midday hours should allow 15 minutes of additional travel time.

WMATA also said via the agency’s Twitter account that every other Orange Line train heading toward Arlington from D.C. will “turn at Foggy Bottom back to New Carrollton.”

This is the third cracked rail that Metro has reported in as many weeks.