Mackinac Bridge in the context of "Straits of Mackinac"

Michigan (/ˈmɪʃɪɡən/ MISH-ig-ən) is a peninsular state in the Great Lakes region of the Upper Midwestern United States. It shares water and land boundaries with Minnesota to the northwest, Wisconsin to the west, Indiana and Illinois to the southwest, Ohio to the southeast, and the Canadian province of Ontario to the east, northeast and north. With a population of 10.14 million and an area of 96,716 sq mi (250,490 km), Michigan is the tenth-largest state by population, the 11th-largest by area, and the largest by total area east of the Mississippi River. The state capital is Lansing, while its most populous city is Detroit. The Metro Detroit region in Southeast Michigan is among the nation's most populous and largest metropolitan economies. Other important metropolitan areas include Grand Rapids, Flint, Ann Arbor, Kalamazoo, the Tri-Cities, and Muskegon.

Michigan consists of two peninsulas: the heavily forested Upper Peninsula (commonly called "the U.P."), which juts eastward from northern Wisconsin, and the more populated Lower Peninsula, stretching north from Ohio and Indiana. The peninsulas are separated by the Straits of Mackinac, which connects Lake Michigan and Lake Huron, and are linked by the 5-mile-long Mackinac Bridge along Interstate 75. Bordering four of the five Great Lakes and Lake St. Clair, Michigan has the longest freshwater coastline of any U.S. political subdivision, measuring 3,288 miles. The state ranks second behind Alaska in water coverage by square miles and first in percentage, with approximately 42%, and it also contains 64,980 inland lakes and ponds.

Interstate 75 (I-75) is a major north–south Interstate Highway in the Great Lakes and Southeastern regions of the United States. As with most Interstates that end in 5, it is a major cross-country, north–south route at a length of 1,786.47 miles (2,875.04 km), traveling from State Road 826 (SR 826, Palmetto Expressway) and SR 924 (Gratigny Parkway) on the Hialeah–Miami Lakes border (a few miles northwest of Miami, Florida), to Sault Ste. Marie, Michigan, at the Canada–United States border. It is the second-longest north–south Interstate Highway (after I-95) and the seventh-longest Interstate Highway overall.

I-75 passes through six different states. The highway runs the length of the Florida peninsula from the Miami area and up the Gulf Coast through Tampa. Farther north in Georgia, I-75 continues on through Macon and Atlanta before running through Chattanooga and Knoxville and the Cumberland Mountains in Tennessee. I-75 crosses Kentucky, passing through Lexington before crossing the Ohio River into Cincinnati, Ohio. In Ohio, the highway runs up the western side through Dayton and Lima before crossing into Michigan north of Toledo. I-75 runs northeasterly along the Lake Erie shoreline and Detroit River into the city of Detroit before turning northwesterly to Flint and northward to the Mackinac Bridge where the freeway crosses the strait between Lakes Huron and Michigan. Farther north, I-75 approaches the Canadian border at Sault Ste. Marie, downriver from Lake Superior, 1,786.5 miles (2,875.1 km) from its origins near the subtropical Atlantic Ocean.

St. Ignace (/ˈɪɡnəs/ IG-nəss) is a city in the U.S. state of Michigan and the county seat of Mackinac County. The city had a population of 2,306 at the 2020 census. St. Ignace Township is located just to the north of the city; the two are administered separately.

St. Ignace is located along Lake Huron in the Upper Peninsula on the northern side of the Straits of Mackinac. The city serves as a gateway to the state's Upper Peninsula for travelers coming from the Lower Peninsula, as the city is at the north end of the Mackinac Bridge, opposite Mackinaw City. It has one of two ports which provide ferry service to nearby Mackinac Island.

David Barnard Steinman (June 11, 1886 – August 21, 1960) was an American civil engineer. He was the designer of the Mackinac Bridge and many other notable bridges, and a published author. He grew up in New York City's lower Manhattan, and lived with the ambition of making his mark on the Brooklyn Bridge that he lived under. In 1906 he earned a bachelor's degree from City College and in 1909, a Master of Arts from Columbia University and a Doctorate in 1911. He also received an honorary Doctor of Science in Engineering on 15 April 1952 from degree mill Sequoia University, but would distance himself from it soon after a 1957 inquiry raised doubts over its legitimacy, and did not mention the qualifications in his biographies. He was awarded the Franklin Institute's Louis E. Levy Medal in 1957.

David B. Steinman built bridges in the United States, Thailand, England, Portugal, Italy, Brazil, Haiti, Puerto Rico, Canada, Korea, Iraq and Pakistan. He had a literary bent, and was a published author with several books, articles in advancement of his craft, and even had children's books and poetry to his credit.

Interstate 75 (I-75) is a part of the Interstate Highway System that runs north–south from Miami, Florida, to Sault Ste. Marie in the Upper Peninsula of the US state of Michigan. I-75 enters the state from Ohio in the south, north of Toledo, and runs generally northward through Detroit, Flint, and Bay City, crosses the Mackinac Bridge, and ends at the Canadian border in Sault Ste. Marie. The freeway runs for approximately 396 miles (637 km) on both of Michigan's major peninsulas. The landscapes traversed by I-75 include Southern Michigan farmland, northern forests, suburban bedroom communities, and the urban core of Detroit. The freeway also uses three of the state's monumental bridges to cross major bodies of water. There are four auxiliary Interstates in the state related to I-75, as well as nine current or former business routes, with either Business Loop I-75 (BL I-75) or Business Spur I-75 (BS I-75) designations.

The freeway bears several names in addition to the I-75 designation. The southern segment was called the Detroit–Toledo Expressway during planning in the 1950s and 1960s. Through Detroit, I-75 is the Fisher Freeway or the Walter P. Chrysler Freeway, named for pioneers in the auto industry. Sections on either side of the Mackinac Bridge are the G. Mennen Williams Freeway or the Prentiss M. Brown Freeway, named for politicians who helped get the bridge built. Officially, the entire length is the American Legion Memorial Highway, after the organization of the same name. Various sections carry components of the four Great Lakes Circle Tours in the state.