Mt. Vernon Cul-de-sac Inlets and Alley Storm Sewer Improvements
Project Summary
Phase: Construction
Status: Active
Location: Potomac West
Managing Dept.: Project Implementation
Sponsor Dept.: Transportation & Environmental Services
Project Description
The Mt. Vernon Cul-de-sac Inlets and Alley Improvements Project will provide flood mitigation for townhomes on the 100 block of Mt. Vernon Avenue. Inlets and underground storage vaults will be installed on Mt. Vernon Avenue and it's adjacent alleyway to capture and attenuate storm water runoff. The addition of new underground utilities will require the relocation of the local water utility. In tandem with work, the alleyway will be re-graded to improve surface drainage into the downstream swale.
The following photos are examples of the new infrastructure and features that will be installed:
Funding
Project Budget: $2,060,000
Funding Sources:
Learn more about the City of Alexandria's Fiscal Year Budget.
Schedule
- Planning: January 2021 - September 2021
- Design: October 2021 - November 2023
- Construction: December 2023 - March 2026
Planning
SPONSOR PROGRAM
This project is part of the Flood Action Alexandria program. In response to more frequent, intense climate-change-induced storm events, the City of Alexandria launched Flood Action Alexandria, a multipronged program to help address flooding issues in our community.
Construction
Construction Update
The City is preparing to advertise the construction services solicitation for the Mt. Vernon Cul-de-sac Inlets and Alley project. In tandem with the final approvals process, the City is coordinating with impacted utility providers to finalize relocation plans. Utility relocations are expected to begin in early 2025 and conclude within Q2 of 2025. Public notices to impacted residents will be issued by the utility providers prior to any service disruptions.
The City hosted a public construction kickoff meeting in late October to announce the start of the construction phase, present anticipated impacts to residents along the 100 & 00 blocks of Mt. Vernon Avenue and answer questions about the project. Meeting invites were issued prior to the public meeting. Meeting materials and information can be found under the Community Engagement menu below.
Construction Overview
The City will install Inlets and underground storage vaults on Mt. Vernon Avenue and it's adjacent alleyway to capture and attenuate storm water runoff. In tandem with work, the alleyway will be re-graded to improve surface drainage into the downstream swale. The addition of new underground utilities requires the relocation of the local water utility.
Construction Procurement
The City is responsible for preparing a construction solicitation based on the technical plans and specifications for the project.
Information on the City's procurement processes can be found on the Finance Department's Purchasing webpage.
Community Engagement
The City hosted a public construction kickoff meeting in late October 2025 to announce the start of the construction phase, present anticipated impacts to residents along the 100 & 00 blocks of Mt. Vernon Avenue, and answer questions about the project.
What to Expect During Construction
Anticipated Site Mobilization: Fall 2025
Construction Hours
General Construction Activity*:
- Monday-Friday: 7 a.m.-6 p.m.
- Saturday: 9 a.m.-6 p.m.