Photo Illustration: Lauren Carol Smith

Subway tunnels flooded with 15 feet of water Monday are carrying trains again.

L trains began running between Rockaway Parkway, in Brooklyn, and Eighth Avenue, in Manhattan, at 3 p.m. today, the MTA announced.

Rush-hour delays are likely, as trains are running at 10 minute intervals, but Twitter users wasted no time rejoicing, with varying degrees of irony.

“THE L TRAIN IS WORKING AGAIN, HALLELUJAH!!!!!” wrote @Jaysilv.

“The L train is back on service!” tweeted @tsardad. “Never thought that statement would make me happy. But it does.”

And BradCCohen wrote: “At first I was all, ‘The L train is back! The L train is back!’ And then I was like, ‘Why do I really need to leave Brooklyn anyway?'”

Crews have spent the past days pumping water and making repairs to the Canarsie tunnel’s signaling and communications systems – footage of which the MTA released yesterday.

There is still no timeline for restoration of A and S service to the Rockaways, N service from Eighth Avenue to Coney Island, and R service into Manhattan.