On August 5th, 1949, the causeway was officially opened by the Premier of Nova Scotia, the Honorable Mr. Angus L. MacDonald, by the cutting of a yellow ribbon, midway of the causeway.

Before construction started in the 1940's, residents were concerned about the fishery and the effects that it might have on the species of fish that migrated through the channel. Today in the 2000's, residents are more concerned with unforeseen problems that have arisen over the last fifty years and the effects they have had on surrounding land structures.

Barrington Council requested that a Cape Sable Island causeway study be carried out. The study would include providing a large enough opening in the causeway to allow an adequate flow of water to provide for fish migration and to eradicate pollution on the western side of the causeway. This opening would be spanned by a bridge.

The causeway has provided a dependable route of transportation for about half a century to many island residents. While many improvements may be made to the existing causeway to enhance circumstances, people will continue to appreciate the reliable service of the Cape Sable Island causeway.