Project Summary
Status: Complete
A total of 904 manhole inserts have been installed, and the project was completed in February 2025.
Locations: Arlandria-Chirilagua, Braddock Road Metro Station, Fairlington/Bradlee, King Street Metro/Eisenhower Avenue, North Potomac Yard, North Ridge/Rosemont, Potomac West, Potomac Yard/Potomac Greens, Seminary Hill/Strawberry Run, and Taylor Run/Duke Street
Managing Dept.: Project Implementation
Sponsor Dept.: Transportation & Environmental Services
Project Description
The City of Alexandria installed 870-plus stainless steel manhole inserts in the Four Mile Run, Commonwealth, and Taylor Run sewersheds. These inserts help prevent stormwater runoff from entering sanitary sewer manholes during wet weather.
Manhole inserts are pan-shaped devices that sit at the top of the manhole, directly underneath the manhole cover. The inserts have a hole that slowly drains accumulated stormwater into the sewer after the storm ends. Manhole inserts are one of the most cost-effective ways to reduce inflow into the sanitary sewer system. Inflow into sanitary sewers can overwhelm the capacity of the sewer system, which can lead to sewer backups in basements.
Funding
Project Budget: $910,000
CIP Section: Sanitary Sewers
Learn more about the City of Alexandria's Fiscal Year Budget.
Schedule
- Planning: June 2021 - December 2021
- Design: January 2022 - January 2023
- Construction: January 2023 - January 2025
Construction
Construction Update
A total of 904 manhole inserts have been installed, and the project was completed in February 2025.