Water Main Replacement

Project Summary:

Project Type:
Water Distribution

Owner:
Moorhead Public Service

Overview:

On an annual basis, Apex assists Moorhead Public Service with their water main replacement projects throughout the City.  Replacement areas are outlined by Moorhead Public Service by reviewing data from water modeling and historical maintenance.  Based on location and existing conditions, the water main replacements have utilized a variety of innovative techniques, such as pipe bursting, CIPP lining and slip lining.

Project Details:

In 2013, after multiple breaks and repairs needed during poor construction conditions, Moorhead Public Service turned to Apex Engineering Group to assist in addressing a number of water main sections to be replaced throughout the City. Together, Apex and Moorhead Public Service used historical maintenance data and water modeling information to create a systematic approach to rank the areas needed for repair.

Based on the project location and condition of the existing infrastructure, a variety of pipe materials, sizes, and replacement methods were used to rehabilitate the water mains. Traditional replacements using open cut excavation have occurred at times, while others have required innovative solutions like pipe bursting, slip lining, pipe lining and directional drilling. On occasion, multiple alternatives were bid and the most cost effective approach was used.

By using advanced technology, traffic issues are alleviated and impacts to neighboring properties are reduced. These methods are especially advantageous on heavily traveled roadways such as Trunk Highway 75, or in repair areas such as alleys where a number of other utilities are located. In 2015, Moorhead Public Service and Apex Engineering Group presented at the National North American Trenchless Technologies Conference in Denver, Colorado, on several instances where trenchless technology had been utilized for water main replacements.

Apex and Moorhead Public Service staff are in constant collaboration with multiple agencies such as MnDOT, Burlington Northern Railroad, Minnesota Department of Health, and various utility companies to ensure the most efficient, cost-effective, and least disruptive installations.

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