MassDOT is pleased to announce that an update on the project's progress is now available. Learn about completed work and upcoming activities, including traffic management, in the July 2015 Construction Update.
Please visit the Traffic Management page to learn about lane closures and other modifications affecting travel.
View construction progress photos in the Route 2/I-95 Bridges Flickr Album
About The Project
The Massachusetts Department of Transportation (MassDOT) is undertaking the Route 2/I-95 Bridge Replacement Project to replace the existing bridges carrying Route 2 east and westbound over I-95 in Lexington, also called the Concord Turnpike. On February 12, 2014, the MassDOT Board of Directors approved the award of a Design/Build contract to SPS New England, Inc. to complete the project.
Route 2 is one of the main alternatives to the Massachusetts Turnpike for east-west travel and carries approximately 67,000 vehicles per day. The bridges, built in 1960, are structurally deficient and functionally obsolete, and the vertical clearance for I-95 under the bridges is substandard. The project will address the bridges' current structural deficiencies, upgrade their capacity, meet current seismic criteria, improve safety, protect the environment and reduce annual maintenance costs. Accelerated Bridge Construction (ABC) techniques will be used to minimize disruption and reduce construction duration. They include the first-time use in Massachusetts of precast, modular concrete abutments instead of a deep foundation system using numerous drilled shafts.
The project area extends from Old County Road in the west near the Lincoln town line to Spring Street in the east, near many high tech and biotech businesses. It also abuts the watershed of the Cambridge reservoir, the main water supply for the City of Cambridge.
The replacement bridges will consist of two 334-foot, two-span steel plate girder structures. The new bridge cross sections will provide three 12-foot travel lanes, one 12-foot auxiliary lane and two 6-foot wide shoulders in each direction. MassDOT will also realign and reconstruct portions of Route 2 to improve clearance over I-95 (to 16 feet, 6 inches) and make it easier to stage the construction. The project also includes upgraded stormwater drainage and treatment and architectural elements and landscape restoration to improve aesthetics.
MassDOT will also resurface a 2-mile section of I-95. The work includes reconstructing the median, upgrading and replacing guard rails, widening shoulders, installing new pavement and markings and improving stormwater drainage. View the project map.
The project features MassDOT's first use of "Intelligent Compaction." Compaction is one of the most important processes in roadway construction for high quality, uniform, long-lasting pavement. "Intelligent Compaction" uses vibratory rollers equipped with an onboard computer reporting system and Global Positioning System (GPS) mapping. The process provides the operator with an on-board, real-time record of the location and number of roller passes as well as compaction data.
Public Information Meeting - February 24, 2015
Public Information Meeting - June 25, 2014
- Construction Begins* - June 2014
- Bridge and Highway Design Complete - April 2015
- Construction Substantially Complete - November 2016
* See the Design and Construction section below for an explanation of the design/build process.
Design and Construction
The project reached 25% design during the previous preliminary design and environmental permitting phase. In the current phase, MassDOT will complete the design and construct the project using the design/build (D/B) approach. In February 2015, a 75% design public information meeting was held to present the design, construction progress, and to gather public input before final design. In D/B, the final design is completed in packages that MassDOT releases for construction after review and approval. This process allows construction to begin almost immediately on critical elements of the project. MassDOT is using ABC techniques to complete the project as quickly and efficiently as possible, and minimize impacts by reducing construction time and inconvenience to the public. ABC techniques include using prefabricated elements that are assembled off-site.
Massachusetts Department of Transportation
SPS New England, Inc. - General Contractor
DW White Construction, Inc. - Earth and roadwork subcontractor
TranSystems Corporation - Design lead (bridge, highway, traffic, stormwater and environmental)
Haley & Aldrich - Geotechnical engineering
Green International Affiliates, Inc. - Landscape architecture and utilities
Regina Villa Associates, Inc. - Public involvement and outreach
For questions, comments or issues, please contact Donny Dailey, MassDOT Legislative Liaison, at 617-945-4272 or Donny.email@example.com, or the project field office at 781-790-5261.
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