File:20110812 Lennox Passage Lift (Bascule) Bridge 1.jpg
The Passage is approximately 10 nautical miles (16 km) in length from MacDonalds Shoal (near Janvrin Island) to Ouetique Island near D'Escousse with depths varying from 3 to 20 metres.
Bridging the passage: Initially crossed by two ferries, (one from the present location of the bridge and one from Grandique Point to Grandique Ferry), construction of a swing bridge began in 1916 and was completed in 1919, connecting Isle Madame to Cape Breton. This bridge was horse-operated.
Built in the 1970s, the electrically powered single-leaf bascule bridge (Lennox Passage Bridge) carries Nova Scotia Route 320, connecting Cape Breton Island and Isle Madame.