Service Authority Installing New Water Main in Manassas

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Provided by Prince William County Service Authority

The Prince William County Service Authority has begun the first phase of the Sudley Road Water Main Improvements Project.

Estimated to take 12 months to complete, the project entails the installation of approximately 7,700 feet of 16-inch water main from the Sudley Road-Rixlew Lane intersection to the Ashton Avenue-Sudley Manor Drive intersection in Manassas. This project will maintain water quality and enhance system reliability for customers living in the Greater Manassas area.

The current water main serving the area was constructed in the 1970s and 1980s; maintenance is difficult due to its depth, location and number of valves. The second phase of the project will include decommissioning of the current main and installing several loop closures to further improve the reliability of the system.

Whenever possible, the Service Authority’s contractor will perform night work in order to minimize disruption to motorists. In the coming weeks, Ashton Avenue may be closed from Lomond Drive to Crestwood Drive for one evening in order to connect an existing main with the new main. The Service Authority’s Contractor is currently working with VDOT to obtain the necessary approval. Detour signs with the date of the potential closure will be in place in advance of the construction work.

Please email any questions about the project to



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