The detours will occur twice daily from Monday through Thursday as both sides of the highway are shut down for roughly 15 minutes each time. State Department of Transportation spokesman Josh Morgan said a blast operator from Maine Drilling and Blasting will be using explosive charges to dislodge chunks from 800 feet of rock ledge between exits 74 and 75. The blasting project is slated to take six to eight weeks to complete once it starts with a bang on Aug. 1. The plan is to widen the highway to accommodate auxiliary lanes that will give drivers more time to get up to speed and so cars traveling just one exit will be able to get off without ever having to merge into another lane of traffic. The work is part of a four-year, $148 million construction project at the Exit 74 interchange of I-95 that began in March.
https://www.theday.com/local-news/20230719/weeks-of-twice-daily-highway-closures-coming-to-east-lyme/