I-495/I-90 Interchange Improvements Project
Advisory: Hopkinton, Westborough
I-90 Westbound to I-495 Northbound Ramp Now Opens September 19
Overnight Ramp Closures at I-495/I-90 Interchange,
September 21-24
What is Hap
pening?
The Massachusetts Department of Transportation (MassDOT) is announcing a new date for opening of the new ramp connecting I-90 westbound to I-495 northbound, as well as overnight ramp closures at the I-495/I-90 interchange to facilitate construction operations.
I-90 Westbound to I-495 Northbound Ramp Opening
The new I-90 westbound ramp to I-495 northbound is now scheduled to open on Saturday, September 19. This work will require a single lane closure on I-90 westbound from 8:00 PM on Friday, September 18 to 5:00 AM on Saturday, September 19. You can view a map of the new ramp here.
Overnight Ramp Closures
The I-495 northbound ramp to Route 9 East (Exit 59A) will be closed nightly from Monday, September 21 through Thursday, September 24, from 10:00 PM each night to 5:00 AM the following morning. During these overnight closures, the following detour will be in place:
- Take Exit 59B (Route 9 West) to reverse direction onto I-495 southbound to access Exit 59A (Route 9 East).
Appropriate signage, law enforcement details, and messaging will be in place to guide drivers through the work area.
Drivers traveling through the affected areas should expect delays, reduce speed, and use caution.
All scheduled work is weather dependent and/or may be impacted due to an emergency.
About the Project
The purpose of the I-495/I-90 Interchange Improvements Project is to provide a safe and efficient interchange of the interstate highways I-495 & I-90. 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.
Stay Informed
If someone you know would like to subscribe to receive project updates, meeting notices, and traffic impact advisories, they can do so here.
To report a noise complaint, please call the project hotline: (508) 676-3551
Project email: 495-90Improvements@state.ma.us
Project website: www.mass.gov/massdot/495-