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I-495/I-90 Interchange

This page serves as the home for documents supporting the I-495 / I-90 Interchange Improvements Project. As we work, we will continue to add materials, so check back frequently, and sign up for project updates by emailing

These materials will include meeting presentations and minutes from the Public Involvement process.

This page is also an archive for materials related to the Environmental Notification Form (ENF) filing process. These older materials are provided to help you understand the history and development of the project.

Please note: as work evolves over time, statements made in older materials may become outdated and/or inaccurate. Please assume that newer materials supersede older documents. If you have a question, please contact

Current Documents

October 2017 Project Fact Sheet

Documents from the ENF Filing Process

As noted above, Current Documents should be assumed to supersede these materials.

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