Big Walnut Outfall Augmentation Sewer Project, Part II
![Mtc21 Ig Walnut Outfall Augmentation](https://www.mcnallycorp.com/wp-content/uploads/2023/09/mtc21-ig-walnut-outfall-augmentation.jpg)
Location: Columbus, OH, USA
Owner: City of Columbus
Completion Date: August 31, 2008
Category: Tunneling Utility
13,400′ of 167″ EPB tunnel with precast segmental liner.
Additional Resources:
Big Walnut Outfall Augmentation Sewer Project, Part II