Judy Reservoir to Mount Vernon Transmission Pipeline Project

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Construction on Phase II of the Judy Reservoir to Mount Vernon Transmission Pipeline Project began in July 2021. The total budgeted project cost is $40 million. Scarsella Brothers, Inc., out of Kent, Wash., is the contractor. Phase II will be installed within the right of way and private property in Mount Vernon and unincorporated Skagit County. Installation is approximately 5.3 miles of 36-inch diameter welded steel transmission pipeline.

Project Overview

In 2010, Phase I of the Judy Reservoir to Mount Vernon Transmission Pipeline project was completed for $4.2 million. Phase I was 1.6 miles and followed the Kulshan Avenue right-of-way in Mount Vernon. The 36-inch diameter ductile iron pipeline connects to an existing transmission line at North LaVenture Road.

Why Do the Project Now?

The original 24-inch diameter concrete cylinder pipe was installed in the early 1960s. Large sections of the existing transmission line are virtually inaccessible most of the year due to surface and groundwater levels. Several significant line breaks in recent years have substantiated that the pipe’s useful life is ending. Long-term planning further indicates that demand is outgrowing the capacity of the pipe. A new pipeline will provide operational benefits, including installed meters to help track distribution system loss and provide audit control.

Phase II is partially funded through the Washington State Public Works Board program and the Washington State Drinking Water State Revolving Fund.

This project includes many logistical challenges, including disruptions to property, sensitive wetland areas, and traffic along the route:

  • Five miles of steel pipe installed by open trench construction
  • 1,899 feet of horizontal directional drilling under the Nookachamps Creek
  • Crossing of the East Fork Nookachamps Creek with the construction of a new 200-foot single-span bridge
  • Roadway crossings of state Route 9 and state Route 538 (East College Way)
  • Protection of existing utilities
  • Pavement restoration
  • Restoration of streams, riparian vegetation, and wetlands
  • Property restoration of impacted parcels

Community Benefits

The Judy Reservoir to Mount Vernon Transmission Pipeline project:

  • Provides a safe and reliable potable water source for residents.
  • Ensures adequate water flow.
  • Reduces the water system’s seismic risk.
  • Eliminates costly emergency repairs.
  • Prevents water loss.

Progress Report

Related CIP Project Information