Cars drive up Cadillac Summit Road in October 2021. (Photo by Ashley L. Conti/Friends of Acadia)

BAR HARBOR, MAINE – The three-and-a-half-mile summit road for Cadillac Mountain at Acadia National Park will close to all traffic including pedestrians and bicyclists for the season on November 14th for road repairs and culvert replacements. The road will re-open for pedestrian use after crews have de-mobilized for the winter. The project will kick off this fall with grinding and culvert replacements with paving and striping occurring in the Spring of 2023. The closure will allow workers and oversized vehicles access to the historic road without endangering staff and visitors. The project’s timeline is weather dependent.

Designed by the Bureau of Public Roads between 1929-32, Cadillac Mountain Road is an extraordinary example of construction in a mountainous terrain. The road maintains a positive grade for its entire length and includes spiral transition curves, which were an adaptation from the old railroad route up the mountain, to give a smoother ride between the road’s straight and curved sections. Guardrails were fashioned by spacing three-to-four-foot angular coping stones along the edge of the road approximately four feet apart.

In addition: Road work began October 11 on Park Loop Road, prompting some lane closures and parking restrictions.

Visitors are encouraged to check the park’s website for current conditions and other park information.