No part of the system has been more controversial than Line 12, the newest part of the metro system. Its construction wound up running hundreds of millions of dollars over budget. In 2014, less than two years after it was inaugurated, the stations on the elevated portion of the line were closed because the rails were worn down. They didn’t reopen for more than a year while repairs were done. The line suffered further damage in a 7.1-magnitude earthquake in 2017.
Source: Washington Post May 04, 2021 05:23 UTC