'Ship Canal Water Quality project will create a new system to divert sewage and wastewater overflows from Seattle waterways'

Lane Construction's Tunnel Boring Machine Mudhoney, named after the famed rock band of Seattle, has been busy boring the tunnel of 2.7 miles,

A fine report by ENR,

https://www.enr.com/articles/56247-a-rocky-journey-in-seattle-for-the-mudhoney-tbm?v=preview