Engineering Construction Projects

Road Construction, Closures, and DetoursWhile every effort is made to keep this website up to date, changes occur dynamically and website updates cannot keep up with moment-to-moment conditions. This applies to detours, which are set daily in the field by Town personnel in conjunction with the Lexington Police Department.

Projects Under Construction

Non-Town of Lexington Projects

MassDOT will be replacing the Marrett Road Bridge (Route 2A over I95)  Site work begins on August 28th. 

Important updates regarding Lowell Street water work: Crews working for MWRA will be paving Summer Street the week of August 28th. Please see detour map provided to the Town from MWRA, (pdf)   (please see dedicated webpage for more details) 

National Grid has main relay projects in Town including on Lowell Street adjacent to the MWRA project. 

See the bottom of the page for other important Non-Town related construction information, including road closures related to those projects.

Town of Lexington Projects

Center Streetscape Project was completed in November, 2022. Punchlist and extra work is currently being completed. Please visit the Center Streetscape Project webpage for details and schedule.

Battle Green Streetscape Project begins April 2023. Construction Updates will be posted on the dedicated project webpage! Battle Green Streetscape webpage.

  • 2023 Paving Program (Updated September 20, 2023)   Schedules will be posted here when available. The Town uses several methods to surface or resurface the roads. Descriptions of these treatments can be found on this document. Please see the  2023 Paving Map which is color coded to show the particular type of treatment on each road on this years' list.  Any questions or concerns should be directed to the Paving Hotline: 781 274-8905
    • Surfacing Contract Update: Done!  Punchlist items including but not limited to cleanup, ramps, loam and seed, and line striping will be done in the upcoming weeks.
    • Traditional Paving Contract Update: Roads are closed to through traffic in most cases during paving operations. Roads are completely closed to all including abutters during final paving. 
      • ** Update**  Below are the tentative roads to be paved in upcoming days. This is the final coat application so the road is completely closed to all. Abutters are advised to park offsite if they need access to their vehicle on the date of the paving. Rain delays are always possible so check back here to follow for any schedule changes. Roads postponed due to weather are typically scheduled for the next clear day.
        • **Done** Tuesday, September 19: Hampton Road, Old Spring Street, Clematis Road, Schoolhouse Lane
        • Wednesday, September 20: Dover Lane, Pleasant Street: Watertown Street to Worthen Road E  
        • Thursday, September 21: Piper Road, Pleasant Street: Concord Ave to Lawrence Lane, Trotting Horse Lane 
        • ** TBD ** : Sylvia Road, Waltham Street: Concord Ave to Town Line
    • Please see current schedule (pdf)
    • List of Streets in 2023 Paving Program (pdf)
    • 2023 Paving Map (pdf)
  • Valleyfield, Grassland, and Waltham Streets Drainage Improvements Project (Updated October 2,2023) Work has moved over to Valleyfield Street. Beginning the week September 25th Crews will be dewatering in preparation to install structures. Valleyfield Street and Grassland Street may require road closures at times. The Valleyfield closure is expected to be in place starting Thursday, October 5th and once that work is complete crews will move over to Grassland Street. Closures are expected during work hours typically 7am-5pm. Detours will be posted in the field. See detour map linked below. The project includes storm drain improvements, culvert replacement, and related work on Valleyfield Street, Grassland Street, and Waltham Street near Brookside Avenue. Also included in this project is the traffic lights upgrade on Waltham Street at Brookside Avenue. Any questions can be directed to the email of Marissa Liggiero.

  • Oxbow Road and Constitution Road Drainage Improvements Phase 1 (Updated October 4, 2023) Kiln Brook Culvert Daylighting Project Phase I includes drainage improvements in front of 27/29 Constitution road and includes daylight an existing outfall, installing a culvert, roadway infrastructure improvements and wetland improvements. Phase I is now complete and being monitored. Phase II is expected to take place in 2024. This phase will include increasing drainage pipe sizes on Oxbow Rd, and installing a new section of drain line and drainage structures on Oxbow and Constitution Rd. Minor traffic implications are expected during construction. Plans and more project information will be available soon. Please email Matt Weisman or email Ross Morrow if you have questions in the meantime.  
  • Sewer System Improvements (Updated September 22, 2023) This project, over many phases, includes sewer repairs and rehabilitations for both structural and infiltration related defects. Infiltration is clean water from below the ground (groundwater) that enters the sewer system through defective pipes and structures. This “clean” water takes up valuable space and capacity in the sewer pipes that would normally be available for wastewater. It can cause the pipe and service conditions to back-up and potentially overflow during extreme wet weather conditions, and it costs the Town’s sewer rate payers money to send this “clean” water to the MWRA system. In order to correct many of these issues, repairs and rehabilitations are being made as part of this project. We will update the website once scheduling has been set for this construction season. Any questions or issues can be directed to Marissa Liggiero at

    • Phase 9 

        National Water Main will have one (1) Clean, Inspect, Test and Seal crew in town Monday (10/02) through Friday (10/06). They will be working on the following streets/locations: Concord Avenue, Lawn Avenue, Lawrence Lane, Pleasant Street, and Webster Road.

      • Woodland Rd Sewer Replacement completed. Punch list items such as berm and lawn restoration will be addressed in the coming weeks. Final paving to is scheduled for the beginning of November. At that time the detour will be posted. Please see detour map (pdf)
  • Hayden Ave Pump Station Upgrades (Updated July 31, 2023) Crews are actively working. Hayden Ave may be reduced to one lane for much of the construction. Please seek alternate routes and exercise caution driving through the area.  Hayden station includes a replacement of the existing below grade suction-lift style station with a new submersible type station. It also includes a new power service. The station includes new pumps/motors, controls, valve vault, new permanent standby power generator, piping and landscaping. This project has wetlands/groundwater and slope challenges. The contractor, DeFelice, plans to start construction on March 20, 2023. Please use caution when driving past the job site. Any questions or issues can be directed to Marissa Liggiero at
  • North St Pump Station Upgrades (Updated October 4, 2023) Starting the week of October 2, 2023, construction will start on the North St sanitary sewer pump station project. This work will include clearing and grading in the flood plain to allow for compensatory flood storage, and construction of new components of an upgraded pump station. The parking lot on North St near the intersection of Adams St will be closed throughout the project. The conservation trail from Emerson Rd to North St will closed for different periods of the project as well. It is also anticipated that a short section of Adams St will be alternating 1 way traffic from a short duration during the beginning of the project. Construction is expected to be ongoing to around the January 2024, with additional plantings and punch list items to be addressed spring 2024. Any questions or issues can be direction to Matt Weisman –

Projects by Other Entities Affecting Lexington

This work is not managed by the Town of Lexington and road closures are are set in the field and coordinated with the Lexington Police Department in the interest of safety. When information is available, we will post here and tweet.

  • MWRA/Town of Burlington Water main projects began April 2022 along Lowell Street from the North Ave to Summer Street.  These are two different contracts. This work is expected to take place over two construction seasons. Find out details of these projects
  • National Grid is relaying main on Appletree Lane, Scotland Road, and Peartree Drive as well as Stratham Road. They also are working on Lowell Street.
  • Eversource will be installing conduit on Hartwell Ave. Preliminary site set up will begin on July 11th with digging the following week. No road closures are expected but there may be lane closures at times. This work will be ongoing throughout the summer.
  • MassDOT will be replacing the Marrett Road Bridge (Route 2A over I95)  Site work began on August 28th. Temporary ramp construction and median work began at the end of September/beginning of October. No closures are expected, but, there may be lane closures during construction on both Marrett Road and I95 (nightwork typically). See project advisory notice (pdf) for more information.
  • Follow Lexington DPW / Engineering Twitter.