Ramps To I-495 In Marlborough Closing This Week: MassDOT

MARLBOROUGH, MA — Drivers in Marlborough may run into detours this week with construction at the I-290, I-495 interchange closing exit ramps.

The nightly detours began Sunday, with the ramps from I-290 eastbound and Route 85 eastbound to I-495 northbound closing. The closures will happen each night until Thursday starting at 10 p.m. and lasting until 5 a.m. the following day.

Here's the detour MassDOT has set up during the work:

• During the overnight work, drivers traveling on I-290 eastbound and Route 85 westbound looking to access I-495 northbound will be directed to take I-495 southbound and use exit 63A (Route 20 eastbound) to access I-495 northbound.

The ramp closures in Marlborough and Hudson aren't the only ones along I-495 this week. Ramps from the Mass Pike to southbound I-495 will also be closed in Westborough and Hopkinton amid an ongoing overhaul of the interchange between the two freeways.