BAR HARBOR — Acadia National Park has reopened the entire six-mile Eagle Lake Loop, marking completion of the rehabilitation of the entire 45-mile network of carriage roads in the park.

Superintendent Kevin Schneider said the carriage roads used by equestrians, bicyclists, runners and walkers is in “outstanding condition” with help from Friends of Acadia and private philanthropy.

“Acadia contains the best and most extensive example of a historic carriage road system in the United States,” he said.

Between 1991 and 1995, an extensive rehabilitation of the carriage roads was financed by federal construction funds along with matching private funds from Friends of Acadia.

Friends of Acadia donated more than $5 million for upkeep or the carriage roads, demonstrating the power of private matching funds, said David MacDonald, the organization's president.

The Eagle Lake project included rehabilitation of the existing six miles of carriage road surface, subgrade, and drainage.

The work also included reconstruction of masonry retaining walls and stabilization of stone slope protection walls.