September 19, 2018 - Work on the sixth of seven neighborhood drop shafts that will connect to the deep rock sewer tunnel begins Wednesday, September 19, 2018. Crews will start clearing the area and placing signs for the closure of the intersection of Thieme Drive and Berry and Nelson streets in the West Central neighborhood.

Thieme will close to traffic during the drop shaft construction. The closure will continue through late September of 2019.

Drop shafts are the connecting elements that will pull combined sewage from neighborhoods and drop it down to the tunnel to reduce by more than 90 percent the amount of combined sewage that flows into our rivers.

The tunnel, called the Three Rivers Protection and Overflow Reduction Tunnel (3RPORT), will be fully operational in 2023. For more information on the tunnel, visit