A cracked rail on the Red Line created delays for several hours Monday, the second such incident in the past week. 

The cracked rail, outside the Friendship Heights station, was reported to Metro shortly before 11 a.m. The rail was replaced by 2 p.m., with normal train operations resuming by 2:24 p.m. and residual delays clearing up by 2:45 p.m., according to Metro. 

While the rail was being replaced, Red Line trains were single-tracking between Van Ness and Medical Center. 

A similar situation slowed midday Red Line travelers last week. On Thursday, a cracked rail near Bethesda caused single-tracking between Friendship Heights and Medical Center.

The two cracked rails were probably caused by water infiltration, which is an issue on that stretch of the Red Line, said Metro spokesman Dan Stessel.