Cottage and Lopez Drainage Improvements Project

The Cottage/Lopez Drainage Improvements Project is a City infrastructure project designed to help alleviate flooding issues and make Cottage and Lopez streets safe and accessible for all users, including pedestrians, cyclists, motorist and transit users. 

This project includes:

  • design of new storm drain infrastructure 
  • replacement of the water main
  • rehabilitation/replacement of the existing sanitary sewer 
  • new curbs and sidewalks
  • full street reconstruction and paving
  • new trees

Construction Update

6/3/2019-6/7/2019: Crews will be doing test pits between Pearl St. and River St. and at Brookline St. and Pacific St. 


Construction Notice: Drainage and Water Work beginning Week of May 13th

As part of the Cottage and Lopez Drainage Improvements Project, the City’s contractor, P. Gioioso and Sons (PGS), will begin mobilizing in the coming days.

PGS has been installing tree protection along the street as well as performing survey and layout work. Starting the week of May 13th, PGS will begin saw-cutting areas of the roadway and establishing laydown areas. DigSafe markings will also begin appearing on the sidewalk and roadways. 

Beginning the week of May 20th, PGS will be reconstructing drainage structures at Pacific and Brookline Streets. This work is expected to last about a month, weather permitting. The next phase of work will be sewer and drain reconstruction along Lopez Street.

What to Expect During Construction:

  • Work hours will be 7 AM to 4 PM, Monday-Friday.
  • “No Parking” signs will be posted; please be sure to check dates/times. 
  • Vehicle access in and out of properties will be maintained but may be restricted for short periods. If you need access and your driveway is blocked, please speak to a crew member on site and they will make accommodations for you.
  • Emergency vehicles and City service vehicles will have access at all times. 


Community Meeting Notice- Tuesday, April 30th, 6-7:30PM, Central Square Library - Lewis Room

The Cottage/Lopez Drainage Improvements Project includes new storm drain infrastructure to alleviate flooding in the Cambridgeport neighborhood as well as street and sidewalk surface repair.

On Tuesday, April 30th from 6:00-7:30 pm, the Department of Public Works will be hosting a construction open house at The Central Square Library- Lewis Room.

Engineering staff from the City and the contractor performing the work, P. Gioioso & Sons will unveil final design plans and explain the construction process. We encourage you to attend to learn about what you can expect as the construction progresses in your neighborhood over the next 18 months.

Over the next several weeks, you may start to see crews mobilizing in the area in advance of construction. They will be installing tree protection, marking out Dig Safe locations, conducting surveys and drilling into the street to determine subsurface conditions.

Additional information can be found on the project page at www.CambridgeMa.gov/TheWorks/CottageandLopez.

Information and Assistance

The City of Cambridge does not discriminate on the basis of disability.   The City of Cambridge will provide auxiliary aids and services, written materials in alternative format, and reasonable modifications in policies upon request.  For more information, please contact Jennifer Letourneau, Engineer, at jletourneau@cambridgema.gov / 617-349-4680. To receive future updates via email, please contact Kate Riley, Community Relations Manager kriley@cambridgema.gov / 617-349-4870 


September 2018

Community Meeting Notice- RESCHEDULED! New Date and Location

The Cottage/Lopez Drainage Improvements Project includes new storm drain infrastructure to alleviate flooding in the Cambridgeport neighborhood as well as street and sidewalk surface repair.

On Tuesday, October 16th from 6:00-7:30 pm, the Department of Public Works will be hosting a community meeting at The Central Square Library- Lewis Room. Please note, this meeting has been RESCHEDULED from Wednesday, September 26th. 

This meeting is a follow up to the one held on Thursday, March 8th where we received feedback from local residents regarding street conditions. The focus of this meeting will be to discuss plans to improve the road surface conditions of the area. We encourage you to attend, as we value the feedback we receive from Cambridge residents and businesses.
Additional information can be found on the project page at www.CambridgeMa.gov/TheWorks/CottageandLopez.

Information and Assistance
The City of Cambridge does not discriminate on the basis of disability. The City of Cambridge will provide auxiliary aids and services, written materials in alternative format, and reasonable modifications in policies upon request. For more information, please contact Jennifer Letourneau, Engineer, at jletourneau@cambridgema.gov / 617-349-4680. To receive future updates via email, please contact Kate Riley, Community Relations Manager kriley@cambridgema.gov / 617.349.4870


The Cottage/Lopez Drainage Improvements Project includes new storm drain infrastructure to alleviate flooding in the Cambridgeport neighborhood as well as street and sidewalk surface repair.

On Wednesday, September 26th from 6:00-7:30 pm, the Department of Public Works will be hosting a community meeting at the Community Learning Center -Conference Room, 5 Western Ave.
This meeting is a follow up to the one held on Thursday, March 8th where we received feedback from local residents regarding street conditions. The focus of this meeting will be to discuss plans to improve the road surface conditions of the area. We encourage you to attend, as we value the feedback we receive from Cambridge residents and businesses.
Additional information can be found on the project page at www.CambridgeMa.gov/TheWorks/CottageandLopez.

Information and Assistance
The City of Cambridge does not discriminate on the basis of disability. The City of Cambridge will provide auxiliary aids and services, written materials in alternative format, and reasonable modifications in policies upon request. For more information, please contact Jennifer Letourneau, Engineer, at jletourneau@cambridgema.gov / 617-349-4680. To receive future updates via email, please contact Kate Riley, Community Relations Manager kriley@cambridgema.gov / 617.349.4870


April 2018

Drainage work will continue on Cottage St. for the next 3 weeks as crews work to install a new drain. 


Notice: Construction at Pearl St. intersection beginning week of 3/12


The Cottage/Lopez Drainage Improvements Project includes design of new storm drain infrastructure to alleviate flooding in the Cambridgeport neighborhood. The project area includes Cottage and Lopez Streets between River St. and Brookline St. and Pearl St. between Cottage St. and Lopez St. It will be conducted in 2 phases. 
  • Phase 1: rehabilitation/replacement of the storm drain, sanitary sewer and sections of the water main on Pearl St. between Cottage and Lopez Street. March 2018-May 2018.
  • Phase 2: rehabilitation/replacement of the storm drain, sanitary sewer and sections of the water main on Cottage and Lopez Streets. Phase 2 will also include surface reconstruction of Cottage and Lopez Streets. Summer 2018-Summer 2019.

Map of Cottage and Lopez Streets

A community meeting will be held in Fall 2018 to discuss design options for surface improvements on Cottage and Lopez Streets during Phase 2.

Phase 1 is scheduled to begin the week of March 12, 2018 (weather permitting). Please see images for traffic management plans during constructions.


Traffic detour route on Pearl Street

Cottage St. will be closed at Magazine St. Traffic will go south on Pearl, turn west onto Lawrence, turn north on Magazine and turn west on Cottage against the wrong way. Traffic detail officers will be on premise to direct traffic.

Map of traffic detour on Pearl St

Cottage St. remains open. Traffic detail officers will be on premise to direct traffic.

Map of traffic detour on Pearl Street

Lopez St. will be closed at Magazine St. Vehicles will enter the end of Lopez St. against the wrong way. Traffic will turn south on Pearl, turn east on Decatur, turn north on Brookline and turn east on Lopez. Traffic detail officers will be on premise to direct traffic.

What to Expect During Construction:
  • General work hours will be 7am – 4pm, Monday-Friday.
  • Please check posted No Parking signs.
  • Please follow pedestrian detour signs.
  • Access to properties will be maintained, when possible.
  • Access will be maintained for emergency vehicles and City services.
Information & Assistance:
Questions regarding this project? Contact Jennifer Letourneau, Project Manager, at 617-349-4680/ jletourneau@cambridgema.gov or Kate Riley, Project Administrator- Community Relations, at 617-349-4870/ kriley@cambridgema.gov. For more information about the project and to sign up for the project email list, visit www.CambridgeMA.gov/CottageLopez. If you have any special need or disability, please contact us to arrange for special accommodations that may be necessary.


Notice: Cottage/Lopez Drainage Improvement Project Community Meeting, March 8th. 

The Cottage/Lopez Drainage Improvements Project includes new storm drain infrastructure to alleviate flooding in the Cambridgeport neighborhood.

On Thursday, March 8th from 6:00-7:30 pm, the Department of Public Works will be hosting a community meeting at the Central Square Library, 45 Pearl St, Lewis Room, 2nd Floor.

The focus of this meeting will be to discuss the project and future improvement to streets, sidewalks and accessibility. We encourage you to attend, as we value the feedback we receive from Cambridge residents and businesses.

Additional information can be found on the project page at bit.ly/cottagelopez.

Information and Assistance

The City of Cambridge does not discriminate on the basis of disability.   The City of Cambridge will provide auxiliary aids and services, written materials in alternative format, and reasonable modifications in policies upon request.  For more information, please contact Jennifer Letourneau, Engineer, at jletourneau@cambridgema.gov / 617-349-4680. To receive future updates via email, please contact Kate Riley, Project Administrator- Community Relations, kriley@cambridgema.gov / 617.349.4870 


UPDATE: Storm Drain work has been postponed until Monday, February 26th.


February 2018: Notice: Cottage and Lopez Drainage Improvement Project- Storm Drain work to begin Tuesday, February 20, 2018

As part of the Cottage and Lopez Drainage Improvement Project, crews from Stantec and National Water Main will begin cleaning and surveying 7,200 linear feet of storm drains in the area. This work will continue through the end of February.

What to Expect During Construction:
  • Work hours will be 7 AM to 4 PM, Monday-Friday.
  • “No Parking” signs will be posted; please be sure to check dates/times. 
  • Vehicle access in and out of properties will be maintained, but may be restricted for short periods. If you need access and your driveway is blocked, please speak to a crew member on site and they will make accommodations for you.
  • Emergency vehicles will have access at all times.
Impacted Streets:
  • Allston St.- Magazine St. to Pearl St.
  • Brookline St.- Hamilton St. to Erie St.
  • Chestnut St.- Brookline St. to Sidney St. 
  • Cottage St. – Magazine St. to Pearl St.
  • Erie St. – Pearl St. to Brookline St., Brookline St. to Albany St. 
  • Hamilton St. – Magazine St. to Pearl St., Brookline St. to Sidney St.
  • Kelly Rd. – Pleasant St. to Magazine St. 
  • Lawrence St. – Magazine St. to Pearl St.
  • Pearl St.- Corp McTernan St. to Hamilton St.
  • Perry St. – Magazine to Pearl St.
  • Putnam Ave. – Newton St. to Waverly St.
  • Sidney St. – Henry St. to Erie St.
  • Waverly St. – Putnam Ave. to Waverly St.

Information & Assistance:
Questions regarding this project? Contact Kate Riley, Project Administrator- Community Relations, at 617.349.4870/ kriley@cambridgema.gov or Jennifer Letourneau, Engineer, at 617-349-4680 / jletourneau@cambridgema.gov. If you have any special need or disability, please contact us to arrange for special accommodations that may be necessary.

January 2018:

  • Fieldwork investigations including soil borings have begun on Cottage St. and Lopez St. and will continue through February.

Drainage work is continuing on Cottage St. for the next 3 weeks. Please see "Updates" tab for most up-to-date information.


On Thursday, March 8th from 6:00-7:30 pm, the Department of Public Works will be hosting a community meeting at the Central Square Library, located at 45 Pearl St.


Initial fieldwork activities will run through the end of January. Please see "Updates" tab for most up-to-date information.

The Cottage/Lopez Drainage Improvements Project includes design of new storm drain infrastructure to alleviate flooding in the Cambridgeport neighborhood. Depending on the results of field investigations, the project may also include design of rehabilitation/replacement of the existing sanitary sewer and water main. The project area includes Cottage and Lopez Streets between River Street and Brookline Street.

  • Map of Cottage and Lopez Streets

    CottageLopez Phases

  • Traffic detour route on Pearl Street

    Pearl St Traffic_1

  • Map of traffic detour on Pearl St

    Pearl St Traffic2jpg

  • Map of traffic detour on Pearl Street

    Pearl St Traffic3jpg

Jennifer Letourneau - Senior Engineer

Phone: 617-349-4680

Email: jletourneau@cambridgema.gov



Kate Riley - Community Relations Manager

Phone: 617-349-4870

Email: kriley@cambridgema.gov

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Dept of Public Works

147 Hampshire St
Cambridge MA 02139

Phone:617.349.4800
TDD:617.499.9924

Hours of Service

Monday: 8:30am-8:00pm
Tuesday-Thursday: 8:30am-5:00pm
Friday: 8:30am-12 noon
24 Hour emergency 617.349.4860

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Saturday: 9:00am-4:00pm

Owen O'Riordan
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