Public Works and Environmental Services

Fairfax County, Virginia

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TTY 711

12000 Government Center Parkway
Suite 448 Fairfax, VA 22035

Christopher S. Herrington,

Indian Run Gravity Sewer Replacement Project (WW-0000028-002-F)

map - Indian Run Gravity Sewer Replacement
Overview map showing the proposed work.


Project Update: July 8, 2022

Project bid advertisement is anticipated in July 2022. Construction is expected to commence in Winter 2022.

Project Background

The purpose of this project is to relocate an existing gravity sewer pipe that crosses the Indian Run stream. The gravity sewer in question is partially exposed (above ground level) in certain segments, and fully exposed as it crosses the stream. Furthermore, a sewer manhole along the stream bank (manhole # 419) has been undermined by the adjacent stream. The exposed pipe segments and the undermined manhole present a potential environmental hazard. The intent of this project is to remove this sewer crossing and relocate the sewer flows via alternative routes.

Project Description

The project involves the installation of new sewer mains near the Columbia Road and Montgomery Street intersection and crossing the Birch Lane cul-de-sac. Further, roughly 640 feet of existing gravity sewer will be abandoned or removed.

Project Location

The project is in Annandale adjacent to and in the Indian Run Stream Valley Park. Road closures are expected near the Columbia Road and Montgomery Street intersection.

Project Phase

The project is nearing the end of the design phase and beginning the land acquisition phase. Once the land acquisition phase is complete (anticipated fall 2021) the project will be advertised to pre-qualified contractors.

Project Benefits

The benefits of the project are:

  • Improve sewer system reliability in the neighborhood.
  • Prevent costly future emergency repairs.
  • Reduce future risk of sanitary sewer overflows.
  • Reduce risks to public health and the environment.


Construction activity is expected to begin in Winter 2022 and be substantially completed in Fall 2023.

Project Cost and Funding Source

Construction of the Indian Run Gravity Sewer Replacement Project is estimated at $2,300,000. Wastewater construction projects are funded through the county’s Capital Improvement Program.

Presentations to the Community

Presentations to the Community


For more information, email Project Manager Christopher Mata at, Wastewater Design and Construction Division, Capital Facilities, Department of Public Works and Environmental Services, or call 703-324-5111, TTY 711.

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