Two massive transformers will soon move through Harford County, making slow, steady progress to Peach Bottom Atomic Power Station in Delta, Pa.

Exelon has been working on an $87 million project to replace all six of Peach Bottom's main power transformers. Work on that began in 2009 and is expected to be finished in 2012.

Last year, as part of that project, three transformers made the trek to Peach Bottom travelling about 3 to 5 mph through Harford County. Those transformers weighed about 481,000 pounds each and followed the first transformer that made the trip in 2009.

On June 25, two transformers are expected to arrive by barge at Vulcan Materials Company Quarry in Havre de Grace and take the same route as those that traveled through the area last year.


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Larry Parks, director of public works for the City of Havre de Grace, said the move should be low maintenance for the city with little disruption to normal activity.

"It doesn't have a large effect, just some pipes that we have them cover," Parks said.

From the quarry, the transformers will cross I-95 to the Route 155 exit, which will require a 15-minute highway closure, and continue to Route 136 in Churchville.

Most of the travel will take place at night between 10 p.m. and 5 a.m., except crossings at Deer Creek and Broad Creek.

Travel across Broad Creek will require closure of Route 136 from Route 22 to Route 1 starting around 7 a.m. June 28 until 5 a.m. June 29.

The next day, Route 136 will be closed from Route 1 to Route 165 during the same time frame while the transformers cross the Deer Creek bridge.

The transformers will resume travel after 10 p.m. June 29 and continue into Pennsylvania.

Hake Rigging is again responsible for moving the large loads.

"They're really, really good at what they do," Charlie Gischlar, spokesman for Maryland State Highways, said Wednesday.

David Tillman, spokesman for Exelon Power, which runs Peach Bottom power station, said the trip will be very similar to that of last year, except this year it will be two transformers moving instead of three.

"Most of the moves will be happening at night, especially in Pennsylvania," Tillman said.

He said the benefit to moving the transformers during the summer is that school is not in session, and any road closures will not interfere with bus traffic.

"We look forward to a smooth operation again this year," Tillman said.