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)   There will be lane shifts and construction ongoing. Expect delays. Work requiring I95 closures/lane closures will take place overnight. There will be a new traffic pattern on the Marrett Rd bridge as demolition of the existing structure takes place. Traffic will be reduced to one lane. Please see the latest project advisory/release from MassDOT for information. (pdf)

Town of Lexington Projects

Battle Green Streetscape Project begins April 2023. The roundabout is installed! There will be punch list items addressed in the spring. Please visit the project webpage for details. Battle Green Streetscape webpage.

  • 2023 Paving Program (Updated November 21, 2023)   The 2023 Paving/Surfacing is complete! Any questions or concerns should be directed to the Paving Hotline: 781 274-8389

  • Valleyfield, Grassland, and Waltham Streets Drainage Improvements Project (Updated December 29, 2023) Work is shut down for the winter and will resume in the spring. 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 December 29, 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

  • Hayden Ave Pump Station Upgrades (Updated November 21, 2023) Crews are wrapping up.  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. 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.