Allston I-90 Interchange Improvement Project
The I-90 Allston Interchange Improvement Project is being conducted by MassDOT and results from the need to replace the structurally deficient, functionally obsolete Allston Viaduct. This also offers the opportunity opportunity to dramatically reduce the footprint of the existing Allston Interchange toll plaza and along with Harvard University, the property owner, create a new neighborhood in Allston. In planning for new turnpike access, the project is looking all transportation facilities and connections including a new roadway system, as well as bicycle and pedestrian facilities and the creation of a new stop on the Worcester/Framingham Commuter Line to be known as West Station. Since 2014, MassDOT and its design team have worked with a task force composed of local residents, advocates, representatives of local institutions and businesses, and officials both elected and appointed, to develop a concept for the replacement of the Allston Interchange which includes:
- Complete streets improvements to Cambridge Street.
- Enhanced bicycle and pedestrian connectivity among the different parts of Allston touched by the project area and the Charles River.
- A significant transit enhancement in the form of West Station and Commuter Rail Layover which will provide access and operational improvements to the commuter rail and an intermodal focal point for local bus service.
- A realigned I-90 mainline, straightened to take full advantage of the safety enhancements made possible by AET.
- A replaced I-90 Allston Viaduct to ensure that this section of a critical regional highway can continue to safely and efficiently carry traffic to and from Boston.
- Connecting roadways between Cambridge Street and I-90 built, to the fullest extent practical and safe, on complete streets principles to clearly signal to motorists leaving the highway that they are entering a community.
Cambridge is involved with the task force team which meets regularly and includes two members from Cambridge - a resident and a Community Development staff person. The City of Cambridge representatives are focused on many aspects of the project including providing enhanced connectivity through the site to the Charles River and across to Cambridge for all modes, as well as project noise, urban design/green space and improved transit connections to Cambridge.