Northern Pass Expert: 3 Months of Construction Likely In Downtown Plymouth

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Garry Rayno photo

Northern Pass Construction Panel: From left to right are, Nathan Scott, senior transmission engineer for Burns & MacDonald, the engineering firm for the project; Lynn Farrington, traffic engineer for Louis Berger, a project advisor; Samuel Johnson of Burns and MacDonald, and lead project manager; Kenneth Bowes, Eversource vice president of engineering; Derrick Bradstreet, of Burns and MacDonald, a project manager, and John Kayser of Burns and MadDonald, a project manager. May 2, 2017


CONCORD — Burying about 50 miles of high-voltage transmission lines between Bethlehem and Bridgewater will mean one-lane roads, lost parking and detours impacting residents, businesses and tourists during construction season, the Site Evaluation Committee heard Tuesday.

The buried transmission line will go under Main Street in downtown Plymouth, through Woodstock, Franconia and Easton, according to the latest plans to move 1,090 megawatts of Hydro-Quebec power along a 192-mile route from the Canadian border to Deerfield.

The $1.6 billion project will take two to three years to build if it is approved by state regulators who are currently in the midst of more than 30 days of adjudicative hearings on Northern Pass. The committee is expected to issue a decision in September.

Construction season coincides with the biggest influx of tourists to New Hampshire and in Plymouth it also overlaps the beginning and end of the academic year for Plymouth State University.

Counsel for the Public Thomas Pappas noted the area has many driveway cuts, shops, restaurants, businesses, government buildings and the university, and is heavily traveled by vehicles, bicycles and pedestrians.

“This is probably the heaviest traveled section of the underground portion and biggest tourist area,” Pappas noted, and Samuel Johnson, the lead project manager agreed.

Pappas noted the Department of Transportation standards require burying the transmission line under the existing utilities including water and sewer, but Johnson said they are asking the state for a variance to bury the line above the existing utilities.

He did say burying the line below the utilities would take additional time.

Pappas suggested the work in downtown Plymouth would take between 12 and 18 weeks to complete, but Johnson said three months was probably more accurate.

Johnson said they had discussions with Plymouth officials about the impact construction would have on the community, and offered alternatives.

“They chose not to pursue this after about a two-month period of developing plans,” Johnson told the committee.

While about 20 parking spaces will be lost during construction, he said, there are large municipal parking lots within 100 feet of Main Street.

Johnson said letters have been sent to businesses but as yet there has been no personal contact with business owners along the route.

Once the construction schedule is developed and mitigation such as night work and alternative routes are determined, they would begin reaching out, he said.

“We believe once we have that in hand,” Johnson said, “we’ll have much more productive conversations with each of the business owners.”

Under questioning from Counsel for the Public Pappas, project officials said they would need town approval for a detour over local roads to bypass the roundabout on Main Street and Holderness Road, which connects the downtown to Interstate 93.

Lynn Farrington, a traffic engineer advising Northern Pass on the project, said an alternative detour using I-93 has been developed, but is much longer and less convenient.

Pappas spent Tuesday morning questioning Northern Pass officials about the buried section of the transmission project between Bethlehem and Bridgewater, often noting the work would require closing one lane of the two-lane highway.

Pappas focused on areas where specialty drill equipment will tunnel through the ground under highways and water bodies, noting large sections of roads would have to be restricted to one lane for about one-quarter mile in some sections.

He noted one section of drilling underground would be in front of the Woodstock Fire Station where there would be lane restrictions on both sides of the facility although the road in front of the station would remain two lanes.

Farrington said when possible, they plan to utilize sidewalks and street parking spaces to have enough space for two lanes of traffic.

Pappas noted fire trucks would need more space, but Farrington said the trucks would be able to use the two-lane configuration.

But Pappas noted that would eliminate parking on both sides of the road.

About 60 miles of the 192-mile route will be underground, mostly through the White Mountain National Forrest and areas entering and exiting the federally-owned land.

Project construction is expected to be the topic for the remaining two days of hearings this week.

Garry Rayno can be reached at

Don’t miss every other Friday: Garry Rayno’s  column Distant Dome runs exclusively on Manchester Ink Link and, where Rayno explores a broader perspective on State House – and state – happenings. Over his three-decade career Rayno has closely covered the NH State House for the New Hampshire Union Leader and Foster’s Daily Democrat, and his coverage spanned the news spectrum, from local planning, school and select boards, to national issues such as electric industry deregulation and Presidential primaries. He is former editor of The Hillsboro Messenger and Assistant Editor of The Argus-Champion. Rayno graduated from the University of New Hampshire with a BA in English Literature and lives with his wife Carolyn in New London.’s coverage of the Northern Pass hearings

April 13, Day 1: Eversource NH Chief Quinlan On The Hot Seat At Northern Pass Hearing
April 14, Day 2: Eversource Chief Questioned About ‘Clean’ Energy Claims And Northern Pass Costs
April 17: Day 3: Eversource: Hydro-Quebec Revenues Could Fall Short In Northern Pass’ First Year
April 18: Day 4: Northern Pass’ Potential Health Concerns Debated At Hearing
April 19: Day 5: Concerns Raised About Northern Pass Affecting Health of Sherburne Woods Residents in Deerfield
April 30: Is NH Getting ‘Hoodwinked’ on Health and Safety By Northern Pass?

 May 1: Day 6:

Testimony: 44 New Access Roads Needed To Build 192-Mile Northern Pass in NH

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