The reason why Ohio has so many covered bridges is because the covered bridges help to extend the life of the timber structure of the bridge, by protecting the timber structure of the bridge from the weather and elements.
The covered bridges were also important years ago for protecting horses from being spooked by the water below and provided shelter for travelers and serving as convenient locations for social activities and community gatherings.
Ohio also has so many creeks and rivers in it's landscape, which also necessitated the building of many bridges and the covered bridge design was a very effective and practical solution for the time when they were built.
The bridge that is 100 miles long is the Danyang Kunshan Grand Bridge in China.
The Danyang Kunshan Grand Bridge in China is the world's longest bridge and is over 100 miles long that spans around 102.4 miles long, so it's a bit longer than 100 miles long.
The Danyang Kunshan Grand Bridge is an elevated viaduct and part of the Beijing Shanghai High Speed Railway and crosses canals, rivers and lakes while connecting the cities of Shanghai and Nanjing.
The tallest bridge over water in the United States is the Royal Gorge Bridge in Canon City, Colorado, which stands 955 feet above the Arkansas River and was built in 1929 and is a suspension bridge which is popular as a tourist attraction that is known for it's impressive height and views.
The Golden Gate Bridge and the Mackinac Bridge are also some of the tallest bridges over water in the United States.
The Mackinac Bridge is significantly longer than the Golden Gate Bridge.
While the Mackinac Bridge is longer than the Golden Gate Bridge, the Golden Gate Bridge is taller than the Mackinac Bridge.
The Golden Gate Bridge is 1.7 miles long and the Mackinac Bridge is 5 miles long.
The Golden Gate Bridge has 746 foot towers and the Mackinac Bridge has 552 foot towers which makes the Golden Gate Bridge taller than the Mackinac Bridge.
The Mackinac Bridge is also famous for being a remarkable engineering feat, and is as of now the longest suspension bridge in the Western Hemisphere at the time of it's completion.
The Mackinac Bridge is an iconic status symbol of Michigan's upper and lower peninsulas, overcoming of harsh conditions, which made travel by water difficult.
The bridge's design, the challenging construction and the annual Mackinac Bridge Walk also contribute to the Mackinac Bridge's legendary status.