Home > California > Pollard Flat vicinity > Southern Pacific Railroad Shasta Route, Bridge No. 301.85, Milepost 301.85, Pollard Flat, Shasta County, CA
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Item Title
Southern Pacific Railroad Shasta Route, Bridge No. 301.85, Milepost 301.85, Pollard Flat, Shasta County, CA
LocationMilepost 301.85,
Pollard Flat vicinity, CA
Find maps of Pollard Flat, CA
Created/Published
Documentation compiled after 1968.
Notes
Survey number HAER CA-222
Significance: The Southern Pacific Railroad Shasta Route, built as the California and Oregon Railroad and the Central Pacific Railroad between Roseville, California and Portland, Oregon was the first thrust north of the Central Pacific Railroad to tap the Oregon market. Begun in 1863 as the California and Oregon Railroad, the line was finally completed in 1887. Completion of the Natron Cutoff in 1927 saw the north end of the Shasta Route pulled back to Black Butte, California. A final change occurred 1938-1942 when construction of Shasta Dam required replacement of twenty-six miles of the original alignment with thirty-two miles of new railroad. For the purpose of the current project, the Shasta Route was found likely to be eligible for the National Register of Historic Places at the state level of significance under Criterion A for its significance in engineering, transportation history, and the economic development of California and Oregon, and in the development of the West, and under criterion B for its association with E.H. Harriman. The Shasta Route's period of significance is 1863 to 1945, from the beginning of construction in 1863, through the years of its role in the economic development of California and Oregon, to the conclusion of the railroad's achievements in World War II. As contributors to the overall historic property, the route's Common Standard bridges over the Sacramento River were also found to meet criterion C, representing a type, period, and method of construction. Built in 1901, Bridge Number 301.85 is a contributive element of this property.
Collection
Historic American Engineering Record (Library of Congress)
Contents
Photograph caption(s):
1. West portal of Bridge Number 301.85, contextual view to northeast, 135mm lens.
2. West portal of Bridge Number 301.85, view to northeast, 210mm lens.
3. Oblique view of upstream side of Bridge Number 301.85, view to east-northeast, 135mm lens. Heavy vegetation cover, steep banks, and lack of streamside footing precluded full elevation views of the upstream and downstream sides of this bridge.
4. Oblique view of upstream side of Bridge Number 301.85, also showing underfloor deck hangers and diagonal bracing, view to east-northeast, 90mm lens.
5. East portal of Bridge Number 301.85, contextual view to southwest, 135mm lens.
6. East portal of Bridge Number 301.85, view to southwest, 210mm lens.
7. Oblique view of downstream side of Bridge Number 301.85, view to west-southwest, 135mm lens.
8. Detail, skewed portal bracing at west portal, also showing boxed endposts, latticed upper transverse and diagonal sway bracing, laced vertical members, view to northeast, 210mm lens.
9. Detail, typical bearing, upstream side of west end of Bridge Number 301.85, view to east, 210mm lens with electronic flash fill.
10. 'Southern Pacific Company, 6th Crossing of Sacramento River, One 208'-10-1/2' C. to C. End Pins S. Tr. Thro. Skew Span, Scale 1' = 10', The Phoenix Bridge Co., Phoenixville, Pa., April 12, 1901, Drg. 45'
11. 'Erection Plan, 1 - 208'-10-1/2' C. to C. End Pins S. Tr. Thro. Skew Span, 6th Crossing Sacramento River, Pacific System, Southern Pacific Company, The Phoenix Bridge Co., C.O. 836D, Drawing No. 13, Scale 1/8' = 1'0', Engineer, B.M. Krohn, Draftsman, W.L. Clegg, Date, May 25th 1901'
12. 'Portal Strut for 1 - 208'-10-1/2' C. to C. End Pins S. Tr. Thro. Skew Span, 6th Crossing of Sacramento River, So. Pac. Co., The Phoenix Bridge Co., C.O. 836D, Drawing No. 12, Scale - 1' = 1', Engineer - B.M. Krohn, May 22nd `01, J.C.S.'
13. 'Transverse Bracing for 1 - 208'-10-1/2' C. to C. End Pins S. Tr. Thro. Skew Span, 6th Crossing of Sacramento River, So. Pac. Co., The Phoenix Bridge Co., C.O. 836D, Drawing No. 7, Scale - 1' = 1', Engineer - B.M. Krohn, May 11th `01, Slaughter'
14. Date Plate, 'C.O. #836, Dwg. #12A, Full Size. For Portal Strut with Date Plate `DP' see dwg. #12'
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