Lower Olentangy Tunnel nears completion to curb sewage overflows in Columbus

Lower Olentangy Tunnel nears completion to curb sewage overflows in Columbus

Columbus finishes $250M Lower Olentangy Tunnel, reducing sewage overflows and enhancing water capacity for future growth.

Massive $250 million, three-mile Columbus sewer tunnel project reaches destination with a bang

Crews have been tunneling adjacent to the Olentangy River to make the 3-mile sewer overflow tunnel since March 2023. The project will help ensure sewer overflow during increasingly common severe storms doesn't pollute the river.