After a month-long hiatus from performing track work, Metro workers will be back at it this weekend. The Courthouse and Clarendon stations will close for the maintenance.

The stations will close beginning today at 10:00 p.m. and running through closing on Sunday. The closures allow for track circuit replacement, which is a safety measure recommended by the NTSB.

Trains will operate every 15 minutes in two segments: between Vienna and Virginia Square, and between Rosslyn and New Carrollton. There will be free shuttle buses to take passengers between stops from Virginia Square to Rosslyn. Customers using the shuttles should add 15 minutes to their travel time.

To allow for shuttle bus connections, the last train from Vienna to Virginia Square will depart 31 minutes earlier than normal on Friday, Saturday and Sunday nights. The train will leave Vienna at 2:05 a.m. on Friday and Saturday, and at 11:05 p.m. on Sunday.

Riders on the Blue and Yellow lines should also expect delays. Trains will be single tracking between Braddock Road and Pentagon City due to maintenance such as rail tie, fastener and insulator renewal. Blue and Yellow trains will operate every 30 minutes.