Harrods Creek emergency repair update January 24

January 24, 2020

Prospect sewer line repair update:

We apologize for the disruption to your neighborhoods for the repair of this critical piece of infrastructure.

Crews have begun drilling a “tunnel” for the new force main pipe that will run alongside the existing broken pipes. The installation of this new pipe is essential to divert flow so that the repair of the existing pipes can proceed. The drilling work starts on the Ken Carla side of this project. A directional drill will travel 1,100-feet and exit the ground on the Woodlands site. There, crews have assembled the pipe that the drill will pull through this new “tunnel” space. This new pipe is flexible, and the pieces are “welded” together, so there are no seams or joints.

When this new force main pipe is in place, connections will be made to the undamaged portion of the existing force main on both sides of this repair, allowing the pump station behind Ken Carla to go back into service.

 

January 14, 2020 

Prospect sewer line repair update:

We apologize for the disruption to your neighborhoods for the repair of this critical piece of infrastructure.

Crews have begun drilling a “tunnel” for the new force main pipe that will run alongside the existing broken pipes. The installation of this new pipe is essential to divert flow so that the repair of the existing pipes can proceed. The drilling work starts on the Ken Carla side of this project. A directional drill will travel 1,100-feet and exit the ground on the Woodlands site. There, crews have assembled the pipe that the drill will pull through this new “tunnel” space. This new pipe is flexible, and the pieces are “welded” together, so there are no seams or joints.

When this new force main pipe is in place, connections will be made to the undamaged portion of the existing force main on both sides of this repair, allowing the pump station behind Ken Carla to go back into service.

Background

Repairing the broken sewer line that runs 35-feet below the surface, under U.S. 42 and twice under Harrods Creek, is a complicated process. Under the ground is a large casing pipe that holds two pipes inside of it. One of the smaller pipes is a 42-inch gravity sewer line. The other pipe is a 30-inch force main, which is a sewer line that flows by the force of pumps instead of gravity. A discharge—or sewer leak—was reported on the Woodlands side of the creek in late November. Excavation work on that side of the creek revealed that the break is more than 750-feet from where the discharge was reported. It is actually under the land in the bend of the stream. The discharged stayed inside the larger casing pipe and flowed to the Woodlands area, making its way up to the surface.

To make such a long repair, MSD needs access from both sides of the break. That is why crews mobilized in the Ken Carla area. The work is taking place mainly on the site between MSD’s pump station and the creek.

MSD installed temporary access roads to allow heavy equipment to reach both repair sites. Construction of a shaft 35-feet below ground is complete on the Woodlands site. Another one shaft is needed on the Ken Carla side. The shafts are metal boxes with reinforcing to hold back the soil and protect the crews as they work.

No one will lose sewer service during the repair.

There have been no additional discharges to the creek since the originally reported 1,050,000 gallons. And MSD continues discussions with the state and all regulatory agencies concerning the situation.

Current updates are available in several ways. Information is on our website at LouisvilleMSD.org and on our Twitter page @LouisvilleMSD. Residents who want updates directly through email may join the mailing list by sending an email to CustomerRelations@louisvillemsd.org with Prospect in the subject line. You may also reach MSD Customer Relations at 502.540.6000.