In 2010, the provincial government named the entire highway Mabel and Alexander Graham Bell Way in honour of Mabel Gardiner Hubbard and her husband Alexander Graham Bell, who resided and are buried at Beinn Bhreagh near Baddeck.
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Part of the provincial 100-series arterial highway network, Highway 125 encircles the west side of Sydney Harbour, from an interchange with Highway 105 (the Trans-Canada Highway) at Sydney Mines to Trunk 4 (Grand Lake Road) immediately east of Sydney.
Highway 162 was constructed in the late 1970s to link Highway 105 in Bras d'Or to the now-closed Prince Mine at Point Aconi.
Highway 105, the Trans-Canada Highway runs along the Bras d"Or Lake shore through the area. The beauty of Whycocomagh was noted by Alexander Graham Bell, who is known to have stated that "Whycocomagh is the Rio de Janeiro of North America" due to the picturesque island off its shores.