Once again the MTA continues to boggle my mind. Signs are posted in the 72nd St. station that the 2 & 3 lines (usually express) will run local headed southbound every weekend from now until Fall (no weekend express service for 5 months? Come on!). However, get on a train and you’ll hear that the 1 trains (usually local) run express headed southbound after 34th St. What the fuck? I’d (somewhat) understand if they need to completely shut down the express tracks to fix them. But that's obviously not the case. Why switch the lines? Where exactly is the construction south of 34th St.? It make no sense to me… can anyone explain this?