WESTON, Mass. — Drivers heading west on the Massachusetts Turnpike Friday night should prepare for a lane closure and traffic pattern changes in Weston as crews continue work on a major reconstruction project at the Interstate 95/Route 128 interchange.
MassDOT officials say the overnight work is part of a roughly $400 million project to completely rebuild and modernize the I-90/I-95 interchange, one of the largest highway construction projects currently underway in Massachusetts.
Highway Administrator Jonathan Gulliver told Boston 25 News that crews will be shifting traffic onto a newly constructed bridge, marking a significant milestone in the multi-year project.
“This is about the halfway point,” Gulliver said during an interview Friday morning. “We’re going to be shifting traffic over onto that new bridge.”
The change will require drivers to make lane choices earlier than they currently do, Gulliver warned.
Drivers planning to take either of the I-95 ramps will need to move into the right travel lane approximately a quarter-mile before the interchange. Those continuing west on the Pike can remain in the middle or left lanes.
Gulliver said motorists who frequently travel through the area may be used to making last-minute lane changes, but that will no longer be possible once the new traffic pattern is in place.
The lane closures and traffic shifts will occur overnight between 10 p.m. Friday and 6 a.m. Saturday. While some movements through the interchange will remain available, officials warn that access could be limited at various times during the transition.
“Plan ahead if you’re going to be traveling that route,” Gulliver said.
The project, which began in 2024, is expected to take several more years to complete. While the new bridge structure is taking shape, officials say roughly 25% of the bridge still needs to be built.
When finished, the interchange will feature four travel lanes in each direction over the Turnpike, along with redesigned ramps intended to improve safety and traffic flow.
Gulliver said MassDOT has worked to minimize disruptions by keeping much of the construction work away from the main travel lanes.
“There’s a lot of work going on, but the majority of the work is off the main line,” he said. “Very little disruption on a day-to-day basis.”
Officials expect additional traffic pattern changes and overnight closures as construction continues, though major impacts to drivers are being kept to a minimum whenever possible.
The interchange reconstruction project is expected to deliver long-term safety and connectivity improvements for thousands of drivers who travel through the busy corridor each day.
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