The Gwinnett County Board of Commissioners has approved a project to replace water mains in two Sugar Hill subdivisions.

About 2.5 miles of 8-inch water mains will be replaced in the Lanier Forest and Millcreek Trace subdivisions off Frontier Drive to improve the reliability of the distribution system in the area.

“The existing water mains are about 50 years old and have a history of main breaks,” Rebecca Shelton, director of the Gwinnett County Department of Water Resources, said in presenting the project to the county’s board of commissioners on April 18.

The contract for the water main replacement was awarded to JDS Inc. for an amount not to exceed $4,258,964.

Work on the project is set to begin this summer and is expected to take about 480 days to complete.