Seven months after beginning its journey, Elaine the tunnel boring machine has completed its subterranean mission drilling out the Northside Interceptor Tunnel (NSIT) .

The 16.5-foot diameter, 10.3-million-gallon storage tunnel will hold and convey combined sewage during heavy rain events until it can be treated at the city's water reclamation facility. The city said in a news release Elaine finished the tunnel on Nov. 12. By December 2026, the city expects the tunnel to be in service and fully operational.

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