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|The Leonard P. Zakim Bunker Hill Memorial Bridge is a cable-stayed bridge that carries eight lanes of the Interstate 93 and U.S. Route 1 concurrency, plus a two lane access ramp, across the Charles River in Boston, Massachusetts. The bridge was built as part of the Big Dig, the largest overall highway construction project in the United States. The entrance to the Thomas P. "Tip" O'Nei...||03/14/2007||491|
|This combination rail and highway bridge crosses the Mississippi River at Jefferson Parish,LA. The railway part of this bridge at 22,996 feet is the longest in the United States. The highway structure of this bridge is 8,076 feet long. The bridge is approximately 135 feet high and the widest clean span is 790 feet.||02/06/2007||478|
| The Miocene epoch is a period of time that extends from about 23 to 5.3 million year ago.|
Of the modern geologic features, only the land bridge between South America and North America was absent.
During this period, mountain building took place in Western North America and Europe. Both continental and marine Miocene deposits are common worldwide with marine outcrops common near m...
|The Y-Bridge is an old highway bridge over the James River located at Galena, Missouri and opened in 1927. It is named the Y-Bridge because it is shaped like the letter "Y". The bridge is such that (going east), one could then either head north or south upon reaching the east end, where the highway was between a steep bluff on the east and the river on the west. It was built to accomm...||01/04/2009||659|
|Vauxhall Bridge is a steel arched bridge for road and foot traffic, crossing the River Thames in a north-west south-east orientation, between Lambeth Bridge and Grosvenor Bridge, in central London. On the north bank is Westminster, with Tate Britain and the Millbank Tower to the north-east, and Pimlico and its tube station to the north and east. On the south bank, Vauxhall Cross, site of Vauxha...||01/23/2007||380|
|Aioi Bridge was a nationally known T-shaped bridge with girders extending from its central section to Jisenji-no-hana (now, the north end of Peace Memorial Park). The bridge was the target of the atomic bomb. The bomb missed slightly, exploding 300 meters from the bridge in the air over Shima Hospital. |
It was reconstructed after the war and replaced in 1983 by a newer, again T- ...
|The North America Nebula (NGC 7000) is an emission nebula in the constellation Cygnus, close to Deneb||10/23/2007||866|
|Widest avenue of the world: July 9th avenue, Buenos Aires, Argentina||05/16/2007||785|
|Buenos Aires is home to the widest street in the world, which is 425 Ft (130m) arcoss.|
|The Middlesbrough Transporter Bridge (or simply Transporter Bridge) is the furthest downstream bridge across the River Tees, England. It connects Middlesbrough on the south bank to Port Clarence on the north bank. It is a transporter bridge, carrying a travelling 'car' or 'gondola' suspended from the bridge, across the river in 90 seconds. The cart can carry 200 people, 9 cars or 6 cars and one...||03/04/2009||518|
|These are the confirmed impact structures on the continent of North America.|
- Doubleclick on a folder to see an overview of the structure.
- Click on the placemark to see the description of the structure.
- Doubleclick on the 'size indicator' to see the estimated size of the structure.
|The Bridge crossing the Bow River in Calgary, Alberta. It was originally called the MacArthur Bridge, but it was destroyed in a flood in 1915. In 2000, the bridge was restored and renovated. The bridge features four lions atop the sides of the bridge.||07/04/2007||604|