Why is this project being done?

Ann Arbor's LynAnne-Arbana Sewer Project, funded through the Development Offset Mitigation Program (DOM), involves the replacement of 4,300 feet (0.8 miles) of Existing Sanitary Sewer from the Maple Ridge Apartments to Arbana Drive. The existing sanitary sewer line through the project area was primarily constructed in the 1920s to serve the northwest portion of the city.

This project is being done:

• To address sewer surcharging and maintenance issues
• As a continuation of past sewer projects from West Park to Arbana Drive
• To maintain a key natural corridor

As part of this project, the city will:

• Install the new, larger sanitary sewer and connect it to the existing system.
• Maintain existing sanitary sewer service throughout the design and construction.
• Restore areas following construction, including green space and pavement.

Cost and funding source

This project is being funded by the City of Ann Arbor Developer Offset-Mitigation Program, which uses developer payments to fund sanitary sewer wet weather capacity improvement projects.

• Staggered local road closures at Arbana, Westwood/Doty. Access to residences will be maintained.
• Brief lane closures along Dexter.
• Sections of Maryfield Wildwood Park will be closed to public.
• Local road closures, access to residences will be maintained.
• Tree removals.
• Construction noise, including generators for bypass pumping as well as some dust and debris in the areas of work.

Feb. 2021

• Draft plan (PDF)

October 15, 2020 Project Meeting

• Meeting presentation (PDF)
• Meeting video (Youtube)
• Meeting summary (PDF)

June 11, 2020 Informational Meeting Materials

• Presentation (PDF)
• Map (PDF)
• Meeting summary (PDF)

Project Update

February 21, 2025

The city's contractor has been diligently working on completing sewer installation between Westwood Avenue and Doty Avenue and is now prepared to make the final connections on both roads.

Starting the week of Feb. 24, 2025, excavations within Doty Avenue will be performed and the road will be temporarily restored for traffic. Immediately following the reopening of Doty Avenue, Westwood Avenue will be closed to local traffic, and this shift is currently scheduled to occur on Feb. 26, 2025.

It is the project team’s goal to maintain neighborhood access through either Doty Avenue or Westwood Avenue at any given time. Due to the intricate work on making final sewer connections on both streets, the sequencing of these closures may shift back and forth over the coming weeks.

During March and April, construction activity to the west of Doty Avenue is anticipated to continue, including open cut construction and trench less sewer installation in the rear yard areas north of Dexter Avenue.

In April and May, construction is anticipated along Dexter Avenue near Lyn Anne Court and the Maple Ridge Apartments with a corresponding closure of westbound traffic on Dexter Avenue. Information regarding the timing of this closure will be provided in advance. Construction is currently anticipated to be complete by late May, 2025.

For information on road closures for this and other projects this construction season, please the road/lane closure page.