Metro riders weathered yet another cracked rail on Monday, the fifth time in a single month that cracks along the metal tracks slowed down trains. The problems have been getting worse. Cracks on Metro’s 106-mile rail system have become more frequent in the past three years, according to transit agency statistics. Last year, Metro had 49 cracks on the system compared with 33 in 2010, and 19 in 2009.

“In part, this is reflective of aging infrastructure and is exactly the reason we’re doing so much track work to restore the system,” Metro spokesman Dan Stessel told The Washington Examiner.