Hume Avenue Bypass project

The Hume Avenue Bypass project will mitigate flooding through a series of infrastructure upgrades and additions. This project is part of the Flood Action Alexandria program.
Page updated on January 25, 2023 at 10:44 AM
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Overview

The Hume Avenue Bypass project will provide flood mitigation for residential homes fronting Hume Avenue. The main work is to install an alternate storm sewer along Hume Avenue to bypass the existing pipe in the backyards of the townhomes on the south side of Hume Avenue. Other work includes adding inlets on Dewitt Avenue, regrading Hume Avenue, raising the curb on both sides of Hume Avenue and installing a check valve under the parking lot of the Truist Bank at 2809 Mount Vernon Ave.

• Status: In Design
• Total Cost: $1,070,000 ($670,000 in federal grant funding)
• Funding Source: Stormwater Utility, American Rescue Plan Act grant

Project Dashboard

Capital Projects

Check the status of the City's flood mitigation projects using this interactive map tool.

Timeline

Investigation

The Flood Action Alexandria team conducted field investigations in 2020 after receiving several complaints from residents due to severe flash flooding events. The bypass project was identified among several plans to mitigate flooding on Hume Avenue.

Design procurement

AECOM was selected as the design consultant tasked with developing an efficient, effective and constructible design.

Goals of design: 
• Convey the City's standard 10-year storm event without flooding and control larger events to the maximum extent possible
• Maintain adequate drainage for small, frequent storm events, and reduce flooding in the backyards along Hume Avenue during more severe rain events
• Reduce impacts to downstream residents and explore opportunities to reduce flooding through on-site attenuation and routing

Design

Design stages: 
• Data collection, including survey work to map the terrain and drainage features in the project area
• Geotechnical investigation to locate utility lines
• Computer modeling to determine runoff movement and storm sewer capacity
• Civil engineering plans

On-Site: Photos from the Hume Avenue Bypass project

A visual look at progress on the Hume Avenue Bypass project. 

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Mitch Dillon, a City civil engineer and project manager, meets with residents to discuss updates to the bypass project design phase of the project on Hume Avenue on Aug. 24. (City of Alexandria)
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Contractors for the City drill into Hume Avenue as part of a geotechnical investigation on Nov. 2. The goal of the investigation was to determine the location of utility lines, which will be shared with civil engineers designing the Hume Avenue Bypass project. (City of Alexandria)
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Mitch Dillon, a City civil engineer and project manager, observes the progress of a geotechnical investigation on Hume Avenue on Nov. 2. The goal of the investigation was to determine the location of utility lines, which will be shared with civil engineers designing the Hume Avenue Bypass project. (City of Alexandria)
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Contractors for the City drill into Hume Avenue as part of a geotechnical investigation on Nov. 2. The goal of the investigation was to determine the location of utility lines, which will be shared with civil engineers designing the project. (City of Alexandria)
Hume Avenue culvert
Footage from a closed-circuit television inspection of sewer pipes under Hume Avenue revealed this buried bridge culvert. Engineers will have to consider the bridge culvert in their design for the bypass. (City of Alexandria)
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08242022 DSC_0109.00_02_00_08
Mitch Dillon, a City civil engineer and project manager, meets with residents to discuss updates to the bypass project design phase of the project on Hume Avenue on Aug. 24. (City of Alexandria)
11022022 DSC_0599.00_05_03_23
Contractors for the City drill into Hume Avenue as part of a geotechnical investigation on Nov. 2. The goal of the investigation was to determine the location of utility lines, which will be shared with civil engineers designing the Hume Avenue Bypass project. (City of Alexandria)
11022022 DSC_0600
Mitch Dillon, a City civil engineer and project manager, observes the progress of a geotechnical investigation on Hume Avenue on Nov. 2. The goal of the investigation was to determine the location of utility lines, which will be shared with civil engineers designing the Hume Avenue Bypass project. (City of Alexandria)
11022022 DSC_0599.00_04_25_20
Contractors for the City drill into Hume Avenue as part of a geotechnical investigation on Nov. 2. The goal of the investigation was to determine the location of utility lines, which will be shared with civil engineers designing the project. (City of Alexandria)
Hume Avenue culvert
Footage from a closed-circuit television inspection of sewer pipes under Hume Avenue revealed this buried bridge culvert. Engineers will have to consider the bridge culvert in their design for the bypass. (City of Alexandria)

News and Public Announcements

Project notices

• Nov. 2: Portions of Hume Avenue will be closed so crews can conduct geotechnical boring work.

Community meetings

• Aug. 24, 2022: On-site public kickoff meeting hosted by Flood Action Alexandria team with residents
• Dec. 15, 2021: Virtual meeting with residents hosted by Flood Action Alexandria team  
• November 2020: On-site community meeting with residents

Contacts

For the community: 
Mitch Dillon, P.E. (He/Him)
Associate Technical Project Manager
703.746.4028
mitch.dillon@alexandriava.gov

For the media: 
Camila Olivares (She/Her)
Senior Communications Officer, Department of Transportation & Environmental Services
703.541.9594
camila.olivares@alexandriava.gov