|Sleepy Hollow Road by the Dearborn Drive intersection.|
A project to upgrade a worn-out sewer line along Sleepy Hollow Road is expected to start in early November.
There will be “minimal disruption to normal traffic flows,” said Irene Haske, spokesperson for the Stormwater Management Division in the Fairfax County Department of Public Works, and no disruption of sanitary sewer service. People who live nearby and affected civic organizations are expected to receive written notification before the project starts.
Workers will use a trenchless, cured-in-place pipe (CIPP) method to line a 20-inch wide sewer main. CIPP, the primary method used by the county’s Wastewater Collection Division, is a jointless, seamless, pipe-within-a-pipe that can increase the useful life of pipes by up to 50 years, Haske said. CIPP projects are less costly and can be done faster than the traditional dig-and-replace method.
The existing sanitary sewer line under Sleepy Hollow Road was installed in 1959, she said. During a preventive maintenance inspection via closed circuit television, defects were discovered that could cause unnecessary and costly disruptions or failure of the sewer system.
The project is funded through the Fairfax County integrated sewer fund, and the county is negotiating the project cost with the lining vendor, Am-Liner East Inc.