LEWISTON — Work connecting the downtown into Central Maine Power’s expanded electrical grid has moved to Middle Street and foot of the Great Falls.

Underground construction is expected to continue through the middle of 2017. The Middle Street Substation is scheduled to be energized in 2018.

It’s part of the Lewiston Loop 115 kilovolt transmission line project that will connect to the Larrabee Road substation.

The new line and substation, in addition to an overhead transmission line and several other minor upgrades, form the utility’s $72 million Lewiston Loop project, which is designed to address reliability in the Lewiston-Auburn area.

Underground lines will go along Main, Chapel, Lowell, Canal and Lisbon streets downtown, as well as along Strawberry Patch Road.

Work along Lisbon, Main and Canal streets will involve detours and that work will be done at night. Work on the other streets and at the Middle Street Substation site will likely occur during the day.

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