Visitors to Gillette Castle State Park might have a tough time spotting the most recent dramatic change at William Gillette’s eccentric, century-old home that serves as the park’s centerpiece.

Everything atop the “Seventh Sister” hill seems as rustic as ever. However, those with eyes as sharp as the eagles that fly nearby might note that a century of deterioration is being halted around the structure’s sheltered vehicle entrance – also known by the French term “porte cochere.”

The recent work on the building’s north elevation ended the second phase of the state’s three-phase capital-improvement effort at the park, funded through a $1.993 million allocation in 2019 by the bonding commission. The funding also will pay for additional work in 2022 on the building’s west and south elevations, to restore its verandah and resurface its terrace.

Many years of deteriorated masonry conditions had caused overhead stones to fall from the underside of the building’s main portico entrance, posing a potential hazard to park visitors, said John “Jack” Hine, the park’s supervisor.

“It was necessary for the state to engage with engineers from CME Associates Inc. to find a solution to hopefully last another 100 years,” Hine said.

Baltic-based Mattern Construction Inc. was awarded the contract as low bidder and began work in late May, with work wrapping up in late August. Stones that Gillette’s own construction crews had set in place in the early 20th century were removed, labeled and meticulously preserved, Hine said.

The painstaking process called for disassembling the portico stone by stone. Each stone was marked with a number and transferred to a nearby staging area, where they were laid out in the exact same location and orientation.

“By mid-June, during the demolition phase, engineer Mike Culmo determined that the original columns supporting the portico roof were structurally sound enough to support a heavily reinforced concrete roof structure,” Hine said. “That resulted in a reduced scope of work that equated to a significant cost savings to the state,” he added.

“The State Historic Preservation Office wanted to ensure that the finished product was identical to the original structure,” Hine said, crediting Mattern’s superintendent Rodney Young and project manager Noah Brenckle for the task’s successful completion.

“They ensured that every stone was documented, marked and then replaced in its exact location in the original structure,” Hine said. Modern methods and materials were used under the stone facade to increase the structure’s longevity, he added.

Each stone cast into the roof slab was cleaned and the joints repointed, followed by work on a retaining wall at the portico’s front. Final steps included installation of a zinc-coated copper roof and soldering of all seams.

“Mattern Construction is thrilled with the results of the project,” said Brenckle, the project manager. “We feel confident that this structure will be cherished and enjoyed by the coming generations.”

“As the park’s representative for the state, I am very pleased that we have a finished product that holds true to William Gillette’s vision and again will last for generations to come,” Hine said.

The work was part of a multi-phase funding package approved by the State Bonding Commission for improvements at the park, which is nestled between the towns of East Haddam and Lyme along the Connecticut River. The overall project has included reconstruction in 2020 of a large retaining wall and handicap-accessible staircase.

“Any significant improvement to the Castle is, by its nature, a major benefit to the park and a boon for all of its visitors,” said Lynn Wilkinson, president of The Friends of Gillette Castle State Park, a nonprofit, all-volunteer group dedicated to the preservation, conservation and educational activities of the castle and its grounds.

“The state of Connecticut and its Department of Energy and Environmental Protection (DEEP) have demonstrated their commitment to the park and its historical preservation by directing the necessary funding to this project,” she said. “Such support is deeply appreciated.”

The organization’s mission includes the preservation, restoration and conservation of the historic and unique structure and its scenic grounds. Memberships help to finance park and structural improvements while preserving the estate and Gillette’s legacy.

More information about the park and Gillette may be found on the Friends website at gillettecastlefriends.org.