Top 10 Longest Bridges in the World

Seven Mile Bridge

Seven Mile Bridge, Florida Keys runs between Gulf of Mexico and the Florida Strait, connecting Key Vaca

San Mateo-Hayward Bridge

Crosses California’s San Francisco Bay in the United States, linking the San Francisco Peninsula with the East Bay.

Confederation Bridge

Spanning the Abegweit Passage of Northumberland Strait, linking Prince Edward Island with mainland New Brunswick, Canada.

Rio-Niteroi Bridge

Connects the cities of Rio de Janeiro and Niteroi in Brazil.

Penang Bridge

Connects Gelugor on the island of Penang and Seberang Prai on the mainland of Malaysia on the Malay Peninsula.

Vasco da Gama Bridge

Total length of 17.2 km (10.7 mi), including 0.829 km (0.5 mi) for the main bridge, 11.5 km (7.1 mi) in viaducts, and 4.8 km (3.0 mi) in dedicated access roads.

Chesapeake Bay Bridge

At 4.3 miles (7 km) in length, the original span was the world’s longest continuous over-water steel structure.

King Fahd Causeway

Connecting Khobar, Saudi Arabia, and the island nation of Bahrain.

Donghai Bridge

Total length of 32.5 kilometres (20.2 miles)

Lake Pontchartrain Causeway

23.87 miles (38.42 km) long.

Top 10 Big Holes in the World

Chuquicamata – Chile :

Chuquicamata, located in Chile, is a open copper pit mine, over over 850 meters deep, is also the largest total production of copper in the world

Udachnaya Pipe – Russia :

Udachnaya Pipe, located in Russia, is a diamond mine which was discovered in the year 1955. The mine is over 600 meters deep.

Sinkhole – Guatemala:

The Sinkhole, 300 foot deep, is one of the notable holes in the history, as the hole in the year 2007 swallowed  a dozen homes in Guatemala, which killed 2 and causing thousands to be evacuated. The sinkhole was caused by rain and by sewage flow.

Diavik Mine – Canada:

Diavik Mine, which produces 8 million carats or about 1,600 kg (3,500 lb) of diamonds every year, is located in the Northwest territories of Canada.

Mirny Diamond Mine – Siberia:

525m deep with a diameter of 1200m, the Mirny Diamond Mine in Siberia, though abandoned, was one of the first and  largest diamond Pipes in the USSR. It is believed that it took two hours of travel by trucks to reach the top to bottom.

Great Blue Hole - Belize :

1,000 feet across and 400 feet deep, The Great Blue Hole is an underwater sinkhole off the coast of Belize.  Great Blue Hole was formed as a limestone cave during the last iceage.

Bingham Canyon Mine – Utah :

0.75 mile (1.2 km) deep, 2.5 miles (4 km) wide, the  Bingham Canyon Mine located in Utah, is a copper mine in the Oquirrh mountains. The mine is also the world’s largest manmade excavation.

Monticello Dam – California :

The Monticello Dam located dam in Napa County, California, United States most noted for its large circular spillway with a rate of 48,400 cubic feet per second.

Kimberley Diamond Mine - South Africa :

The Kimberley Diamond Mine, which is also known as the Big Hole, still remains as the world's largest hand-dug hole in the world.  With 50,000 miners, the Kimberley Diamond Mine was dug and yielded  2,722 kg of diamonds.

Darvaza Gas Crater – Turkmenistan :