The bridge that is 17 miles long that goes underwater is the Chesapeake Bay Bridge Tunnel and is 17.6 miles long and connects Virginia's Eastern Shore to the mainland near Norfolk, and features both bridges and 2 underwater tunnels, which make it an award winning engineering marvel and is one of the 7 man made wonders of the world.
The Chesapeake Bay Bridge Tunnel is a unique hybrid design that combines long elevated bridge sections, causeways, four artificial islands and two underwater tunnels and it facilitates transportation by providing a direct route and eliminating the need for a 100 mile detour and also allows large ships to pass through the bay.
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.