The world's busiest bridge is in India

Howrah Bridge

THE world's busiest bridge is the Howrah Bridge across the Hooghly in Calcutta. In addition to 57,000 vehicles a day, it carries a huge number of pedestrians across its 457 m (1,500 ft) long and 22 m (72 ft) wide span.

The highest bridge in the world can be found in the the Ladakh valley between the Dras and Suru rivers in the Himalayan mountains. The valley lies at an altitude of about 5602 m (18,379 ft) above sea level. Called the Bailey Bridge, it is only 30 metres (98 ft) long, and was built by the Indian Army in August 1982.

The largest bridge in the world is the 1327 km long Trans Bay Bridge which links San Francisco to Oakland. It was built in 1936 at a cost of $77 million.

The longest bridge in the world is the Pontchartrain bridge in New Orleans, USA, with a total length of 386 km. It was completed in 1956.

The most expensive bridge is the Seto-Ohashi-Kojima bridge in Japan. At 1322 km long, it was built in 1988 at a cost of $8.3 billion.

The world's largest natural bridge is the Rainbow Bridge, tucked away among the rugged, isolated canyons at the base of Navajo Mountain, Utah, USA. It is a natural wonder. From its base to the top of the arch, it reaches 884 m (290 ft) — nearly the height of the Statue of Liberty — and spans 838 m (275 ft) across the river. The top of the arch is 128 m (42 ft) thick and 10 m (33 ft) wide.

— Compiled by Gaurav Sood