PLTW Portfolio-Robin

Bridge/Tunnel 1

Picture
http://www.bing.com/images/search?q=chesapeake+bay+bridge&view=detail&id=D1BFC02C02AD381922A6DB3C01D5929E22593A2D&first=90&FORM=IDFRIR&adlt=strict
Chesapeake Bay Bridge
This bridge is located starting from Virginia Beach, Virginia to Cape Charles, Virginia. Its original name is named after Lucius J. Kellam Jr. Bridge-Tunnel in August 1987. He was one of the civic leaders who had long worked for its development and operation. However, it continues to be best known as the Chesapeake Bay Bridge-Tunnel. It carries 4 lanes on the bridge and two lanes in the tunnel.

Bridge 2

Picture
http://www.bing.com/images/search?q=london+bridge&view=detail&id=822AF85371AF5E342554702B8944B81DFD4EDEC5&first=60&FORM=IDFRIR&adlt=strict
Light Up The Night Tower Bridge London
 It is located over the River Thames, connecting the City of London and Southwark, in central London. The first bridge across the Thames in the London area, probably a military Pontoon bridge. A pontoon bridge or floating bridge is a bridge that floats on water, supported by barge- or boat-like pontoons to support the bridge deck and its dynamic loads. It was rebuilt by Mott Hay and Anderson a total of 928 feet (283 m) long and opened by Queen Elizabeth. The bridge was built to be functional and long-lived, and, as such, it is noticeably less decorated than other Thames bridges built of wood by the romans.

Bridge 3

Picture
http://www.bing.com/images/search?q=Australia+Bridge&view=detail&id=1E8E1D556A2F47AC35FD51A3CB3048D2F93743F0&first=0&FORM=IDFRIR&adlt=strict
Sydney Harbour Bridge-Sydney Australia
The Sydney Harbour Bridge is one of Australia's most well known and photographed landmarks. It is the world's largest (but not the longest) steel arch bridge with the top of the bridge standing 134 metres above the harbour.

Tunnel 1

Picture
http://www.bing.com/images/search?q=tunnels+in+europe&view=detail&id=8B37C67A9321CE7D387924D08785F7B5EBDFAE01&first=180&FORM=IDFRIR&adlt=strict
Europe Tunnels
 A giant drilling machine will complete the world's longest tunnel beneath the Swiss Alps today, paving the way for continuous high-speed rail travel between northern and southeastern Europe.

Tunnel 2

Picture
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Vietnam Cu Chi Tunnels
Cu Chi Tunnels are located approximately 70km northwest of Ho Chi Minh City centre in Cu Chi Rural District. The tunnels are between 0.5 to 1m wide, just enough space for a person to walk along by bending or dragging. 
The tunnels consist of more than 200km of underground tunnels. This main axis system has many branches connecting to underground hideouts, shelters, and entrances to other tunnels.