Mackworth Ocean Walton CSO Separation Project


The project is scheduled to begin the week of 4/27/2020 on Mayland St. Work on Mackworth will begin sometime in June. The contractor is Gorham Sand and Gravel from Buxton ME. 

If you have questions please feel free to email. 

Mackworth 2019-02-26 Public Information Sign

WHAT’S HAPPENING                  

  • New 10” – 48” storm drain and 8” – 12” sewer main will be installed within the following streets
    • Mackworth Street                  
    • Ocean Avenue (Walton Street to Forest Avenuet
    • Walton Street (Ocean Avenue to Canco Road)                                        
    • Mayland Street
    • Irving Street
    • Sawyer Street
    • Forest Avenue at Baxter Woods
    • Hersey Street
    • Clifton Street (Hersey Street to Vannah Street)
    • Vannah Street
  • In total the project will construct 15,000 linear ft of new storm drain and new sewer main
  • New green infrastructure tree filters will be installed on Mackworth St and Walton St.
  • Streets within work area will be reconstructed, new pavement installed
  • New granite curb on the even side of Mackworth Street
  • New concrete sidewalk on the even side of Mackworth Street
  • New 1,590’ of 12” D.I. pipe, and approximately 3,690’ of 8” D.I. pipe water main on the project streets


  • Noise
  • Large equipment and machines moving through the area creating vibrations
  • Traffic disruptions, backups, moving work-zone, slower traffic
  • Streets will be closed to local traffic only
  • 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 late March - early April 2020
  2. Project will start by installing outfall into Back Cove on Baxter Boulevard
  3. Mackworth Street sewer, storm and water main
  4. Ocean Ave from Mackworth to Walton St sewer, storm and water
  5. Ocean Ave from Mackworth to Mayland St sewer, storm and water
  6. Forest Ave sewer and storm drain work at Baxter Woods
  7. Mayland and Irving St sewer, storm and water
  8. Base Paving will occur throughout project as work is complete                               
  9. Project will be shut down for winter by end of November.
  10. Project will begin again in spring of 2021
  11. 2021 work
    1. Storm drainage on Mackworth from Clifton St to Baxter Boulevard
    2. Street reconstruction: all curbing, sidewalks on Mackworth
    3. Sewer, storm and water on Walton St
    4. Sewer and water on Sawyer Street.
    5. Finish Paving


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

Related Documents


Date Notice Additional Documents
12-18-2018 Meeting Notice Presentation