The ramp connecting Interstate 93 north to Interstate 495 in Andover will be closed for overnight construction work beginning Sunday.
The Massachusetts Department of Transportation said divers should expect detours and delays from 8 p.m. to 5 a.m. next week as crews work to install electrical conduits and hand holes on the right shoulder of the ramps at Exit 40A. Work is expected to wrap up on the morning of Friday, Sept. 2.
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