Work will take place between 11:00 p.m. and 5:00 a.m. beginning Monday, September 30, continuing nightly into Wednesday morning, October 2

The Massachusetts Department of Transportation (MassDOT) is announcing that the I-495 southbound on-ramp (exit 106) from I-90, and the I-495 southbound off-ramp (exit 58) to I-90, will be closed tonight through Wednesday night during the hours of 11:00 p.m. through 5:00 a.m. These closures are required to allow crews to accommodate construction operations. 

During work, the following detour will be in place:  

• When the I-495 southbound on-ramp (exit 106) from I-90 is closed, traffic will be directed to follow the detour signs and use I-495 northbound to exit 59B (Route 9 westbound), to reverse direction back to I-495 southbound.
• When the I-495 southbound off-ramp (exit 58) to I-90 eastbound and westbound is closed, traffic will be directed to use will be directed to exit 54A (W. Main St) to access I-495 back to I-90. 

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.

Travel Tips

Please take care to pay attention to all signage as it is posted. For information on traffic conditions travelers are encouraged to: 

• Download the Mass511 mobile app or visit HERE  to view live cameras, travel times, real-time traffic conditions, and project information before setting out on the road. Users can subscribe to receive text and email alerts for traffic conditions. 
• Dial 511 and select a route to hear real-time conditions. 
• Follow @MassDOT on X, (formerly known as Twitter), to receive regular updates on road and traffic conditions.

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.