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Applegate%2525252Bvicinity

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Central Pacific Transcontinental Railroad, Tunnel No. 27, Milepost 133.9, Applegate, Placer County, CA



B&W Photos

HB166747
West Portal Of Tunnel 27 In Distance, Contextual View To Northeast Looking Past Tunnel 26 (haer Ca-202) From Atop East Portal Of Tunnel 25 (haer Ca-201), 380mm Lens.

HB166748
West Portal Of Tunnel 27, Contextual View From Track Level East Of Tunnel 26 (haer Ca-202), 210mm Lens

HB166749
East Portal Of Tunnel 27, View To Northeast From Atop Cut Bank, 210mm Lens


Data Pages


Photo Caption Pages


Item Title


Location
Milepost 133.9, Applegate%2525252Bvicinity, CA

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Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER CA-203
Significance: The Central Pacific First Transcontinental Railroad is a segment of the western half of the first transcontinental railroad, built from Sacramento, California to Promontory Summit, Utah between 1863 and 1869, where it joined the Union Pacific Railroad which had built west from Omaha. For the purpose of the current project, the first transcontinental railroad was found likely to be eligible for the National Register of Historic Places at the national level of significance under Criterion A for its significance in transportation history, in uniting the East and the West, and in the development of the West. The railroad's period of significance is 1869 to 1945, from the line's completion in 1869, through the years of its role in the settlement and development of the West, to the conclusion of the railroad's achievements in World War II. Tunnel 27 is a contributive element of this historic property.

Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. West portal of Tunnel 27 in distance, contextual view to northeast looking past Tunnel 26 (HAER CA-202) from atop east portal of Tunnel 25 (HAER CA-201), 380mm lens.
2. West portal of Tunnel 27, contextual view from track level east of Tunnel 26 (HAER CA-202), 210mm lens. Note solar panel providing signal power, evidence of continuing updating of technology by the railroad. Single-light searchlight-type signal was typical system-wide on the Southern Pacific prior to the 1980s merger with the Denver & Rio Grande Western.
3. East portal of Tunnel 27, view to northeast from atop cut bank, 210mm lens. This view shows to good effect the original construction of the Harriman period tunnels, which were concreted fifty feet in from the portals with the balance being timber lined. In 1965 the east end of the tunnel collapsed, with the result that approximately 115 feet of the east end was 'daylighted' and the original east portal and concreted end were left in place, free-standing as seen here.


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