Alfred Zampa Memorial Bridge, Interstate 80, Vallejo, California : 無料・フリー素材/写真
Alfred Zampa Memorial Bridge, Interstate 80, Vallejo, California / Ken Lund
| ライセンス | クリエイティブ・コモンズ 表示-継承 2.1 |
|---|---|
| 説明 | The Carquinez Bridge refers to parallel bridges spanning the Carquinez Strait, forming part of Interstate 80 between Crockett and Vallejo, in the U.S. state of California. The name originally referred to a single cantilever bridge built in 1927, helping to form a direct route between San Francisco and Sacramento. A second parallel cantilever bridge was completed in 1958 to deal with the increased traffic. Later, seismic problems of the 1927 span led to the construction and 2003 opening of a replacement: a suspension bridge officially called the Alfred Zampa Memorial Bridge. Currently, the Alfred Zampa Memorial Bridge carries westbound Traffic from Vallejo to Crockett, and the 1958 cantilever span carries eastbound traffic.The original steel cantilever bridge was designed by Robinson & Steinman and dedicated on May 21, 1927. Prior to this, crossing the Carquinez Strait necessitated the use of ferries. The bridge cost $8 million to build. It was the first major crossing of the San Francisco Bay and a significant technological achievement in its time.In 2003, as a resolution to seismic problems of the aging 1927 span brought to light after the Loma Prieta earthquake, a new suspension bridge was opened to replace it, at a cost of $240 million. This new bridge was named the Alfred Zampa Memorial Bridge, after an ironworker who worked on a number of the San Francisco Bay Area bridges, including the Golden Gate Bridge and the original 1927 Carquinez span. This span features a pedestrian and bicycle path, part of a bike trail which it is hoped will eventually circle the entire Bay Area. The span measures 0.66 miles (1,060 m). The bridge was dedicated on November 8, 2003 and opened for traffic on November 11.en.wikipedia.org/wiki/Carquinez_Bridgeen.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_... |
| 撮影日 | 2006-08-02 08:44:30 |
| 撮影者 | Ken Lund , Reno, Nevada, USA |
| タグ | |
| 撮影地 | Vallejo, California, United States 地図 |
| カメラ | Canon PowerShot A70 , Canon |
| 露出 | 0.001 sec (1/1000) |
| 開放F値 | f/5.6 |
| 焦点距離 | 7692.307692 dpi |