Back Cove West Storage Conduit


Sargent Corporation was the low bidder with a bid of $27,272,257.00

Construction is scheduled to start June 1, 2021. Some preliminary exploration work will occur during the month of March.

The Notice of Award was issued on December 28, 2020 and signed on December 29, 2020.

City of Portland's Planning Authority has approved a Level 1 Site Alteration Permit on December 30, 2020. 

Maine DEP has issued a Finding of No Significant Impact for the Back Cove West Storage Conduit Project.  The report has been posted below under Press Releases. 

On March 4, 2020 the City of Portland had a neighborhood meeting on this project.  The presentation given at the meeting can be found under Press Releases.

A set of construction plans can be viewed: HERE


Date Notice Additional Documents
02/19/2020 Neighborhood Meeting Notice Meeting Notice
03/04/2020 Neighborhood Meeting Presentation Presentation
04/07/2020 Maine DEP - Finding of No Significant Impact FONSI
Back Cove West Storage Conduit Fact Sheet

WHAT’S HAPPENING                  

  • New 10 foot x 8 foot and 12 foot x 8 foot box conduit will be installed in Baxter Boulevard to capture Combined Sewer Overflows before they reach back Cove.
  • 8 existing CSO’s will be consolidated into 2 remaining CSO’s.
  • In total the project will construct 3,800 linear ft of new box conduit.
  • New sewer, storm drains and water lines will be installed in Dartmouth Street from Baxter Boulevard to Forest Avenue.
  • Streets within work area will be reconstructed, new pavement installed.
  • Multiple storm drain outfalls will be replaced along Baxter Boulevard.
  • Multiple long street closures will occur throughout the project.


  • Noise
  • Large equipment and machines moving through the area creating vibrations
  • Traffic disruptions, backups, moving work-zone, slower traffic
  • Streets will be closed
  • Temporary disruptions to driveways, water, sewer lines (contractor must provide notification)
  • Temporary water lines will be installed running across yards and connecting to houses
  • Dust - contractor required to control dust but it will still get dusty at times
  • Professional interactions with contractor (contact one of the people listed below, if this doesn’t happen)


  1. Start of construction April 2021 and continue through 2022.
  2. Project will start by closing Baxter Boulevard from Payson Park to Vannah Avenue
  3. A 10 foot x 8 foot concrete box conduit will be installed from Cheverus Track to Vannah Ave.
  4. Once Box is completed to Vannah Baxter Boulevard from Vannah to Dartmouth Street will be closed.
  5. A 12 foot x 8 foot concrete box conduit will be installed from Vannah Ave to Dartmouth Street.
  6. Ocean Ave from Mackworth to Mayland St sewer, storm and water
  7. Once this section is complete Dartmouth St will be closed from Forest Ave to Baxter Boulevard. 
  8. New sewer, storm and water will be installed in Dartmouth Street.
  9. Base Paving will occur throughout project as work is completed.                               
  10. Spring 2023 Surface Paving and stripping of the streets.


  • Project Engineer, Portland Department of Public Works: Nathaniel Smith at (207) 874-8818,
Aerial Location Map of the Project