This project is in the 70% Design Phase and is approaching the 95% Design Phase.
The Fairfax County Wastewater Collection Division (WCD) owns and operates over 3,400 miles of gravity sewer and associated manholes (MH) throughout Fairfax County. There are various manholes along the sewer line that allow access for servicing and it is up to the WCD to ensure that maintenance is upkept. The most accessible one is past the cul-de-sac on Wadebrook Ter. Dewberry was tasked with the objective to provide recommendations to rehabilitate the sewer tunnel.
The primary goal of this project is to rehabilitate the manhole near the cul-de-sac of Wadebrook Ter to allow easy access for future repairs, and to repair the interior of the sewer pipes while restrengthening them with a layer of lining to protect the system from future damages.
This project is located primarily along Wadebrook Ter and has the manhole in between the cul-de-sac and Pohick Creek. This project is in the Mt. Vernon magisterial district.
Design Phase - This project is in the 70% Design Phase and is approaching the 95% Design Phase. Specifications, drawings, and updated schedules will be submitted and revamped in this phase.
Helps extend the lifespan of the sewer infrastructure
Prevent System Failures
Protects against aging, leaks, collapses, and blocking
Improved System Performance
Enhance flow capacity, reduce risk of clogs, and improve efficiency
Prevent untreated water from entering water bodies
Reduce emergency repairs
Design is anticipated to be complete early 2024. Construction timing is dependent on stakeholders and bidding services but is expected to start in Spring 2024 and finish in Summer 2024.
During the design phase, officials may be in the area to for surveying purposes. During the construction phase, the trail that starts from the cul-de-sac will be blocked off but the other path will remain open. Expect flagging and survey markers past the end of the cul-de-sac and all along Wadebrook Ter. Once construction begins, access and deliveries will enter the site from proposed access points from Pohick Rd. he typical work week is Monday through Friday starting after 7 a.m. Note that at some periods during construction, work may occur on weekends. Construction activities on weekends would occur after 9 a.m. These start times are in accordance with the Fairfax County Noise Ordinance.
Project Cost and Funding Source
The rehabilitation of the Pohick Sewer Tunnel will be funded for approximately $2,000,000. Funding for construction is dependent upon future budget availability and allocations. The cost will be further defined at the 90% Design Phase.