Updated at 7:17 a.m.

Normal service has resumed on the Orange and Blue lines after earlier delays due to overnight work.

Updated at 6:36 a.m.

Orange and Blue lines have returned to normal tracking but delays continue in both directions, officials said.

Original post: 

Orange and Blue line trains are currently single tracking between the Eastern Market and Stadium Armory stations after overnight rail replacement work, officials said. Tracking is expected to return to normal before rush hour traffic at 7 a.m., according to WMATA.

Riders can expect delays up to five minutes in the meantime.