A new City Council bill would mandate the use of recycled concrete in all new street construction projects.

Councilman Ben Kallos (D-Manhattan) is introducing the legislation that would require at least 30% of concrete to come from demolished roads and buildings.

It’s a move to cut carbon emissions that come from concrete production, he said.

“We need to make sure that any new construction is limiting our greenhouse gas emissions,” Kallos said. “The city deals with tens of thousands of tons of demolition waste every day.”