This bridge was horse-operated and according to Canadian yachtsman and author Silver Donald Cameron, a former resident of D'Escousse) in his book "Wind, whales and whisky" (page 14), was powered by Stanley Forgeron's rather temperamental horse in 1967 when Farley Mowat sailed through the passage aboard Happy Adventure on his way to Expo67.

In February 1970 following the grounding and subsequent breakup of the Liberian-registered tanker Arrow[3][4] on Cerberus Rock in Chedabucto Bay and the resulting spill of 77,000 to 82,500 barrels (more than 2 million gallons)[5] of bunker C oil, the decision was made by the Nova Scotia Government to construct two causeways between Burnt Point and Burnt Island [6] to stop the spread of the Arrow's spilled cargo into the lucrative fishing areas of the Passage as well as the coastline to the east.

[10] By 2018 the repairs had still not been carried out and it was announced that the Lennox Bridge was inoperable and pleasure craft with an air draft of over 5.5 metres (18 ft) at high tide[8][9] would not be able to pass through.

[11] In the fall of 2018 a tender to repair the lift bridge at Lennox Passage was awarded at a cost of $4.54 million to Allsteel Coatings Ltd. of Port Hastings.

[12] In 2019 a Navigational Warning was issued by Fisheries and Oceans Canada advising the air draft under the Lennox Passage bridge was reduced to 10 feet (3.3 metres) at high tide until September 5, 2019.