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This is a file from the Wikimedia Commons. The description on its description page there is shown below.Commons is a freely licensed media file repository. You can help.
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Summary
Description |
English: Western Span of the San Francisco-Oakland Bay Bridge at night The illuminations on the cables, while part of the original design, are actually a relatively recent addition, made practical by the availability of high efficiency compact fluorescent lamps. The original roadway illumination was by low pressure sodium vapor lamps, which while efficient give off a garish monochromatic yellow light. On the lower deck these have been replaced with tubular fluorescent lights attached to the bottom of the upper deck, while on the upper deck the illumination is by high pressure vapor lamps, which give off a more full spectrum light.
日本語: サンフランシスコ・オークランド・ベイブリッジ.
Português: Ponte São Francisco-Oakland.
Русский: Мост Бэй-Бридж, соединяюший Сан-Франциско и Окленд.
中文: 三藩市灣區大橋.
Bahasa Melayu: Jambatan Teluk San Francisco-Oakland.
O'zbek: San Fransisko va Oklendni birlashtiruvchi Bay Bridge (Bey Bridj) koʻprigi.
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Source |
This photo is from a newsletter prepared by the Federal Highway Administration of the US Department of Transportation.
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Date |
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Author |
This media is lacking author information. العربية | Česky | Deutsch | English | Español | Suomi | Français | עברית | 日本語 | 한국어 | Lietuvių | Nederlands | Polski | Русский | 中文(简体) | 中文(繁體) | +/-
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Permission ( Reusing this image) |
see below
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Licensing
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This image is a work of a United States Department of Transportation employee, taken or made during the course of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain. |
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File history
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Date/Time |
Dimensions |
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current |
21:09, 21 September 2005 |
345×279 (13 KB) |
Wolfgang K |
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File links
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