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The bridge opened on November 1, 1957, [10] connecting two peninsulas linked for decades by ferries. At the time, the bridge was formally dedicated as the "world's longest suspension bridge between anchorages", allowing a superlative comparison to the Golden Gate Bridge, which has a longer center span between towers, and the San Francisco–Oakland Bay Bridge, which has an anchorage in the middle.
One of the most important projects of the decade was the foundation contract for David B. Steinman's Mackinac Bridge commenced 1954 and completed in 1957, across the Straits of Mackinac. This five-mile (8.0 km) bridge (including approaches) was the world's longest anchorage-to-anchorage single-suspended span at the time. and Merritt-Chapman ...
The Mackinac Bridge Authority was created in 1950 to study the feasibility of constructing a suspension bridge to connect Michigan's Lower Peninsula with its Upper Peninsula. [3] The MBA was empowered by legislation in 1952 "to issue revenue bonds 'for the purpose of paying for the cost of a bridge ' ". [4]
The Mackinac Bridge Authority was formed in 1950 to construct a bridge over the Straits of Mackinac, and bonds for the bridge's construction were issued Construction on the Mackinac Bridge began in 1954, promising an even faster and higher-capacity link across the Straits of Mackinac. [5]
The post-war years were also a period of major bridge building in the state. The Mackinac Bridge opened on November 1, 1957, [84] the Portage Lake Lift Bridge, the largest double-deck lift bridge was completed in August 1959, [85] and the International Bridge opened across the St. Marys River three years later on October 31, 1962. [86]
More importantly, development and planning of the Mackinac Bridge had been contemplated for some time, and Steinman was appointed to the board of engineers based on Michigan State Legislature legislation of 1950, stating "the board of engineers retained by the Mackinac Bridge Authority was to be selected and nominated by the Dean of Engineering ...
A new survey ranks Michigan's Mighty Mac among the nation's top 10 most scenic bridges. The Mackinac Bridge ranked seventh nationwide, falling within the top 10 of a 100-bridge ranking.
In the mid-1950s construction began on the Mackinac Bridge and its approaches. The road, however, was designed to cut through the center of the northern park expansion. [2] In a compromise, it was agreed that a pedestrian bridge would be erected over the new road connecting the two parts. However, that bridge was never built.