Mining on DigIndy tunnel system more than halfway complete16 April 2019
Indiana - Citizens Energy Group’s DigIndy Tunnel System project reached a significant milestone on Wednesday, April 10, when its 20ft- (6m-) diameter TBM completed mining the Lower Pogues Run and White River Tunnels.
Mining is now complete on four of six tunnels and 17 of 28 miles.
The Lower Pogues Run and White River Tunnels comprise more than seven miles of the DigIndy Tunnel System. Work to prepare the two new segments to capture raw sewage is ongoing, and the tunnels are on schedule to be online by 2021. Meanwhile, Citizens’ tunnel boring machine will move on to mine the 3.4-mile (5.5km-) Fall Creek Tunnel. Upon its completion, mining will begin on the tunnel system’s final segment, the 7.6-mile (12.2km-) Pleasant Run Tunnel.
“Citizens Energy Group has reached an exciting milestone, having mined more than half of the DigIndy Tunnel System upon the culmination of mining the Lower Pogues Run and White River Tunnels,” said Citizens president & CEO Jeffrey Harrison. “As DigIndy moves forward, we continue to use our tunnel boring machine in a way that results in project cost and production time savings, along with increased storage capacity for the system.”
The first 10 miles of the DigIndy Tunnel System (composed of two tunnel segments) entered into operation at the end of 2017. To date, the Deep Rock Tunnel Connector and Eagle Creek Tunnel have prevented more than 900 million gallons of sewage from entering White River and Eagle Creek across the southern half of Marion County according to Citizens.
When the full 28-mile DigIndy Tunnel System is complete in 2025, up to 99 per cent of raw sewage, or 6 billion gallons annually, will be prevented from entering waterways in Marion County, thus enhancing recreational opportunities and further protecting our water supply, while also helping drive neighborhood revitalization and economic development across the city.