Home » Departments » Sewer and Stormwater » Cemetery Brook Drain Tunnel Project » CBDT Work Progress

CBDT Project Map and Photos

Welcome to the Cemetery Brook Drain Tunnel (CBDT) Project Work Status Page!

This page is your window into one of Manchester’s largest infrastructure projects. Here, you can explore updates on construction progress and see how the CBDT team is advancing work beneath and around the City.

The map below highlights the tunnel alignment, including the Launch Trench and Drop Shafts (DS) 1 through 7. Beneath the map, you’ll find descriptions of ongoing activity at each location.

Curious about how it all works or looking to understand some technical terminology? We invite you to watch our project video on the homepage for an inside look at the engineering and innovation behind the Cemetery Brook Drain Tunnel.

Cemetery Brook Tunnel Status Map 

 

How to use map:

To access the legend: Click the box in the top left hand corner. To Zoom: Either use the scroll on your mouse, or click the +/- in the bottom right hand corner. To Pan: Click and drag the map. Basic Information: Click on any portion of the line to activate pop-up window. If the pop-up has arrows at the top left corner, use these to access more information.

Cemetery Brook Work Location and Work Status

Launch Site – Queen City Ave. Bridge
  • Preparation for arrival of tunnel boring machine (TBM), arrival mid 2026
  • Preparation for the construction of the Launch Trench
Drop Shaft 1 – Intersection of Brown Ave. And Queen City Ave.
  • Building demolition complete
  • Preparation of site for support of excavation (SOE)
Drop Shaft 2 – Between Union Street and Beech Street
  • Support of excavation (SOE) installation
Drop Shaft 3 – Near Somerville St. and Maple St.
  • Preparation of site for support of excavation (SOE)
Drop Shaft 4 – Near Wilson St. and Hayward St.
  • Work to commence early 2026
Drop Shaft 5 – Between Taylor St. and Cypress St.
  • Site clearing is ongoing
  • Site services preparation
Drop Shaft 6 – On Massabesic across from Elliot Hospital
  • Site services preparation
Drop Shaft 7 – On Mammoth Rd. at Rockingham Trail
  • Work to commence in 2027  
Entrance Box Culvert – On Rockingham Trail
  • Work to commence in 2028  
Tunnel Boring Machine (TBM)
  • Being fabricated, to arrive mid-2026

EPD Related Links