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MassDOT Advisory: Hopkinton/Westborough Overnight Ramp Closure scheduled for I-495 Southbound / I-90

Closures are scheduled for Wednesday, June 28, through Thursday, June 29, between the hours of 11:00 p.m. and 5:00 a.m.
Posted on: June 23, 2023 - 5:16pm
MassDOT Advisory: Hopkinton/Westborough Overnight Ramp Closure scheduled for I-495 Southbound / I-90

This VIDEO describes the project in greater detail from MassDOT

What Is Happening?

The Massachusetts Department of Transportation (MassDOT) is announcing milling operations on the I-495 Southbound ramps to and from Interstate 90 in Hopkinton and Westborough. The work is scheduled to take place overnight on Wednesday, June 28 through Thursday, June 29 between the hours of 11:00 p.m. and 5:00 a.m. The work will conclude by 5:00 a.m. on Thursday, June 29.

Detour Routes

During the work, the following detours will be in place.

When the I-495 Southbound exit 58 off-ramp to I-90 is closed, traffic will be directed to use exit 54 A (West Main Street) in order to access I-495 Northbound to I-90.

When the I-495 Southbound on-ramp from I-90 is closed, traffic traveling on I-90 will be directed to use I-495 Northbound and take exit 59 B (Route 9 West) back to I-495 Southbound.

Travel Tips

Appropriate signage, law enforcement details, and messaging will be in place to guide drivers through the work area. Drivers who are traveling through the affected areas should expect delays, reduce speed, and use caution. This work is weather-permitting and subject to change.

About the Project

For years, the I-495/I-90 Interchange has experienced traffic demands exceeding its capacity. On an average day, this interchange carries hundreds of thousands of vehicles that travel on both I-90 and I-495, with approximately half of all trucking entering eastern Massachusetts. The deficient geometry concentrates movements through the former toll plaza area, resulting in queuing onto the interstate mainlines and crash rates twice the statewide average. Through this project, we will improve the movement of people and goods through the area - today and into the future.

The project will replace the interchange, eliminate the old toll booth area and weaving areas, improve ramp spacing, acceleration, and deceleration lanes, and add an auxiliary lane from I-495 Northbound to Route 9. New bridges will be constructed on I-495 over I-90, on I-495 and I-90 over the MBTA/CSX/Amtrak lines, on I-495 Northbound over Flanders Road, and on Fruit Street. The project design is taking place now through December 2024, with project completion scheduled for June 2027.

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