except for the first year of the event, it has been on labor day. The Mackinac Bridge is currently the fifth longest suspension bridge in the world. The editor considered both as practicable; the only question in his mind was that of cost. The Mackinac Bridge is a 5-mile-long (8-km.-long) bridge that carries a four-lane interstate highway, Interstate 75.It was built by the U.S. state of Michigan and connects that state's Upper Peninsula and Lower Peninsula together.. With a main span of 3,800 feet, and total length of roughly 5 miles, the Mackinac is the longest bridge of its kind in the Western Hemisphere, and the 5th longest in the world. The total length of the bridge is 26,372 ft (5 miles). He invited other engineers to suggest ideas for crossing the Straits. The law required the Authority to consult with three of the world’s foremost long span bridge engineers and traffic consultants for advice on physical and financial feasibility. The money market had weakened. It took Michigan State Police divers eight days to find the mangled Yugo, which was resting in waters 152 feet deep. The last of the Mackinac Bridge bonds were retired July 1, 1986. Listen as he shares the dream of a span connecting upper and lower Michigan, details the obstacles that stood in the way … As experience with leading-edge suspension bridge designs gave engineers new knowledge, they had failed to relate it to aerodynamics and the dynamic effects of wind forces. The Mackinac Bridge under construction (Mackinac Bridge Construction Gallery) One of the most beautiful bridges in the world with a great Michigan history is the Mackinac Bridge. The total cost neared $100 million in 1957, which translates to $698 million in today’s currency. The bridge opened to traffic on November 1, 1957. This was complete incompetence from the top." Governor-elect G. Mennen (Soapie) Williams was another strong advocate for the bridge and helped to create the Mackinac Bridge Authority in 1950. The Authority accepted the offer and was ready to offer its bonds for sale by March of 1953. In order to make the bonds more attractive, the Legislature passed an act during the Spring of 1953 whereby the operating and maintenance cost of the structure, up to $417,000 annually, would be paid for out of gasoline and license plate taxes. A mole or causeway jutting 4,200 feet into the Straits from St. Ignace south was constructed. Heavy pier foundations, the deepest 210 feet (64 m), were necessary to resist the ice masses that accumulate every winter in the Mackinac Straits. Contracts which had been awarded contingent upon this financing were immediately implemented. Some macs are big. Mr. C. E. Fowler of New York City came forward with an ambitious project to solve the problem with a series of bridges and causeways that would start at Cheboygan, some 17 miles southeast of Mackinaw City, traverse Bois Blanc and Round Islands, touch the southern tip of Mackinac Island, and leap across the deep channel at St. Ignace. Subscribe Please! The closure is for the Mackinac Bridge Walk where registered visitors can walk the whole span of the bridge. Now, engineers no longer believed that suspension bridges needed to be stiffened only against the stress of moving … Fare revenues are now used to operate and maintain the Bridge and repay the State of Michigan for monies advanced to the Authority since the facility opened to traffic in 1957. The Mackinac Bridge is a toll bridge on Interstate 75 (I-75). Pluhar's vehicle went off the bridge and into the Straits of Mackinac. The total cost of the project was upwards of $100 million (originally estimated at $70 million). In 1920 the state highway commissioner suggested a floating tunnel. The Great Belt Bridge in Halsskov-Sprogoe, Denmark, which also opened in 1998, is the second longest suspension bridge in the world with a total suspension of 8,921 feet. In November 1955 the incomplete bridge withstood a 76-mile-per-hour (122-kilometre-per-hour) gale. In January of 1951 the Authority submitted a very favorable preliminary report, stating that a bridge could be built and financed with revenue bonds for $86,000,000 but because of the shortage of materials due to the Korean outbreak, legislation to finance and build the structure was delayed until early in 1952. There were not enough takers to guarantee successful underwriting. Some strides to get the project underway were taken but it was eventually dropped. Fare revenues are now used to operate and maintain the Bridge and repay the State of Michigan for monies advanced to the Authority since the facility opened to traffic in 1957. The bridge opened on November 1, 1957. The lighthouse pictured in the gallery above is adjacent to the Mackinac Bridge. Other macs are bigger. 15 Fun Facts About the Mackinac Bridge Walk Aug. 27, 2015. ecarter@detroitnews.com. The Authority began its studies in May 1934 and has been continuously active since that date. Total length of steel superstructure is 19,243 feet. Because the bridge was in a remote area, financing the project was slow and difficult. (photo courtesy Mackinac Bridge Authority) The bridge took 48 months to complete with over 3,500 workers and $99,800,000. Connecting the Upper and Lower Peninsulas of Michigan, across the Straits of Mackinac, is the Mackinac Bridge, known locally as the Big Mac, or the Mighty Mac. On Friday, the bridge … http://goo.gl/yLIHMX We attached the GoPro to the Jeep and drove across the bridge, and then I added some fun facts about the bridge! In 1923 the Legislature ordered the State Highway Department to establish a ferry service at the Straits. Investigators said Pluhar had been traveling more than 60 mph but couldn't determine what made her car veer. The Mackinac Bridge, which opened in 1957, has withstood some of the most extreme weather in the U.S. How did harsh conditions impact the bridge's construction, Admission is free. Favorite Answer. The bridge was officially begun amid proper ceremonies on May 7 & 8, 1954, at St. Ignace and Mackinaw City. The 1940 Tacoma Narrows Bridge, the first Tacoma Narrows Bridge, was a suspension bridge in the U.S. state of Washington that spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula.It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7 the same year. State police later determined Daraban had driven off the bridge deliberately. 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