The Portage Lake Lift Bridge (officially the Houghton-Hancock Bridge), connects the cities of Hancock and Houghton, Michigan. It crosses Portage Lake, a portion of the waterway which cuts across the Keweenaw Peninsula with a canal linking the final several miles to Lake Superior to the northwest. The moveable bridge is a lift bridge with the middle section capable of being lifted from its low point of four feet clearance over the water to a clearance of 100 feet to allow boats to pass underneath. The bridge is the world’s heaviest and widest double-decked vertical lift bridge. More than 35,000 tons of concrete and 7,000 tons of steel went into the bridge which replaced a narrow 54-year old swing bridge. |
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