Project Description
Phase II of the transmission and distribution work for the District’s Little Spokane River Water Supply Resiliency Project (Project) consists of the installation of over 3.4 miles of 24” Ductile Iron Waterline which includes crossing Dartford Bridge and installing a 300’ bore underneath US 395. The new Transmission Main will be installed within existing rights of way along N Dartford Drive, E Commellini Road, N Wandermere Road, N Hatch Road, and E Midway Road.
In January of 2022, the project was publicly bid and later awarded to Halme Construction, Inc. based out of Spokane, WA. Halme plans to begin mobilization and the installation of site controls in May of 2022. Installation of the waterline will begin on E Midway Road (near Little Spokane Drive) and continue west and then south over to N Dartford Drive, ending just south of the Little Spokane River.
Purpose
Whitworth Water District wishes to notify our customers of the upcoming Phase II of the Project. This project will be constructed between Spring 2022 and Summer 2023. We will keep you informed of the project status and any changes to the schedule so the community is able to effectively plan ahead.
Traffic Impacts
Residents traveling N Dartford Drive, E Commellini Road, N Wandermere Road, N Hatch Road, and E Midway Road should anticipate traffic slowdowns and/or possible closures during the waterline installation this Summer and into the Spring of 2023.
Funding
The District secured over $6.5 million in low interest loans through the Washington State Drinking Water State Revolving Loan Fund and the Washington Public Works Board to complete Phase II. The District has also applied for $4 million in American Recovery Act grant funding through Spokane County to accomplish Phase II.
Project Background and Need
The District serves customers on its southside with water from the Spokane Valley Rathdrum Prairie aquifer (SVRP). District customers on the northside of the district are served from water from the Little Spokane River aquifer (LSR).
The District’s 2018 Water System Master Plan identified the need for more wells to be constructed within the LSR. However, watershed and water supply limitations in the LSR preclude development of additional sources. The SVRP is not subject to these same limitations.
Thus, the District is in the process of implementing a series of capital improvements which include development of source capacity in the SVRP and the transfer of this water to Zone 8 into the LSR portions of the District’s service area through dedicated transmission mains. These improvements provide a significant benefit to the District through increased capacity and improved system reliability. These improvements are briefly described and highlighted on the maps above and to the right.
- Well 3D: Drilling and development of a 4300 gpm well source, completed in 2020.
- Well 3E: Drilling and development of a second 4300 gpm well source, to be completed in 2024.
- Phase I Transmission Project (Mill Road): Installation of 9,500 feet of 24 inch water main, completed in 2019.
- Phase II Transmission Project (Zone 3 to 8 Transmission Main): See information herein.
Dartford Road Bridge Crossing Little Spokane River: This project includes installation of a water carrier pipe through this steel casing below the bridge
US 395 Bore from the north end of Commelini east to Wandermere: Boring is scheduled for completion in April of 2022
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Before You Dig!
Call 811 before you dig.
