Image:Sfbaybridge at night.jpg

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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.
Source

This photo is from a newsletter prepared by the Federal Highway Administration of the US Department of Transportation.

Date
Author
Permission
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Licensing

Public domain 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.

File history

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Date/Time Dimensions User Comment
current 21:09, 21 September 2005 345×279 (13 KB) Wolfgang K (San Francisco Bay Bridge)
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