A comparison of ridership on the D.C. Metro between October 2014 and October 2016 is ugly (boldface mine):
You’ll notice D.C. Metro is at the bottom.
When I broke it out by region, there was really no difference: across the board, there has been a 21% drop (i.e., it’s not declining city or suburban use). While I haven’t been able to find daily use data, it seems that ‘off-peak travel’, which includes weekend use, has plunged even more, according to many reports. That shouldn’t be surprising, since using Metro on the weekend has been a nightmare for the last three years.
While there has been a shift in many cities to Uber and Lyft, I think that’s a response to bad public transit. If you were going somewhere on the weekend, why would you take Metro if you didn’t have to: Sunday, for example, much of the Red Line had a train every 24 minutes. Connecting lines weren’t much better.
I realize there is so much maintenance to be done, but WMATA needs to find a way to make weekend service better. That gets people thinking of Metro as a transit system, not just an alternative commuting system–and that means people are more invested in the system.