A cement truck tipped over on the Lower East Side after the driver forgot to put on the e-brake on construction site at a public housing complex, cops and sources said.

The truck rolled back into soft dirt at about 12:40 p.m. and turned on its side at the Baruch Houses on FDR Drive near E. Houston Street, according to cops.

The driver jumped back in the truck but was unable to stop it, according to a source at the scene.

The driver suffered bumps and bruises and was taken to Bellevue for treatment, according to police.

The accident knocked out power to two the buildings for nearly three hours, the source said.

Baruch Houses resident Andrew Ortiz, 47, told The Post this isn’t the first construction screw-up there.

“This project has been plagued with problems from the beginning,” Ortiz said. “It’s just negligence. I don’t know where they get these guys.”