Home > California > Sims vicinity > Southern Pacific Railroad Shasta Route, Bridge No. 310.58, Milepost 310.58, Sims, Shasta County, CA
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Item Title
Southern Pacific Railroad Shasta Route, Bridge No. 310.58, Milepost 310.58, Sims, Shasta County, CA
LocationMilepost 310.58,
Sims vicinity, CA
Find maps of Sims, CA
Created/Published
Documentation compiled after 1968.
Notes
Survey number HAER CA-223
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 310.58 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 310.58, contextual view to north from inside Tunnel 15,210mm lens. Tunnel 15 pierces a toe of Sweetbrier Ridge.
2. West portal of Bridge Number 310.58, contextual view to north from inside Tunnel 15,380mm lens.
3. West portal of Bridge Number 310.58, view to north, 210mm lens.
4. Axial view of Bridge Number 310.58 from mid-span, view to north, 210mm lens.
5. Oblique contextual view of upstream side of Bridge Number 310.58, showing Tunnel 15 at left, view to southwest, 90mm lens.
6. Oblique view of upstream side of Bridge Number 310.58, 135mm lens. Note ashlar stone masonry abutment built in 1886, Tunnel 15 at left. Heavy vegetation cover, steep banks, and lack of streamside footing precluded full elevation views of the upstream and downstream sides of this bridge.
7. Oblique view of upstream side of Bridge Number 310.58, view to northwest, 90mm lens.
8. East portal of Bridge Number 310.58, contextual view to south, 210mm lens. This view looks straight through both the bridge and Tunnel 15 beyond, emphasizing the proximity of the two structures.
9. East portal and downstream side of Bridge Number 310.58, oblique contextual view to south-southeast, 210mm lens.
10. East portal of Bridge Number 310.58, view to south, 210mm lens. Magnification of this photo reveals one endpost of Bridge Number 310.35, a 1929 American Bridge Company product, just visible at the right side of the far end of Tunnel 15.
11. Downstream side of Bridge Number 310.58, view to east-northeast, 135mm lens.
12. Oblique view of Bridge Number 310.58, showing downstream side, underfloor details, west abutment, and Tunnel 15 beyond, view to southeast, 135mm lens.
13. Detail, downstream side of Bridge Number 310.58, showing lower chord connection, view to southeast, 210mm lens. The riveted portion of the bottom chord is at left, joined at the pin connection to the eyebars. The vertical intermediate post is a compression member, and is attached to one end of a floor beam that spans transversely below the bridge floor. There are paired diagonals to the left of the intermediate post, with a turnbuckled counter to rising diagonally to the right. The diagonals below the floor are bottom lateral members.
14. Detail, end post/top chord connection point, west end of upstream truss, view to east, 210mm lens. The inclined end post is visible at right, with the top chord at left; the vertical member is a hanger. The latticed portal strut is partially visible at upper right, while paired diagonals approach the connection point from lower left, and a latticed top lateral member is visible above the top chord.
15. Detail, typical 'PHOENIX' rolling mark on intermediate post of downstream truss, view to east, 210mm lens.
16. Detail, east abutment, built in 1886, view to northeast, 90mm lens.
17. 'Southern Pacific Company - Pacific System, 3 - 180'-6-1/2' c. to c. end pins S. Tr. Thro. Spans, 10th, 11th and 13th Crossings of Sacramento River, also for 1 - 180'-6-1/2' c. to c. end pins S. Tr. Thro. Span, 8th Crossing Sacramento River, The Phoenixville Bridge Co., Phoenixville Pa., Apr. 9th, 1901.'
18. 'Erection Plan for 3 - 180'-6-1/2' End Pins S. Track Thro. Spans, 10th, 11th & 13th Crossings of Sacramento River, Pacific Systems, Southern Pacific Co. Phoenix Bridge Co., C. O. #839, Drawing #9, Scale = 1/8' & 1' = 1 ft., Eng'r-Chas. Scheidl, Drafts. H. O. McG., April 16th, 1901.'
19. 'Transverse Bracing, 3 - 180'-6-1/2' c. to c. End Pins Sing. Tr. Thro' Spans, C.O. 839 10th Crossing Sacramento River, C.O. 840 11th [Crossing Sacramento River], C.O. 841 13th [Crossing Sacramento River], Sacramento Division, So. Pac. Co., The Phoenix Bridge Co., C.O's. 839, 840 & 841, Drawing #4, Eng'r - C. Scheidl, Draftsman - B. Heald, Scale 1' = 1'-0', April 13th 1901.'
20. 'Portals and Gusset Plates for 3 - 180'-6-1/2' c. to c. End Pins Single Track Through Spans, 10th, 11th, & 13th Crossings of Sacramento River, Southern Pacific Co. Sacramento Division, The Phoenix Bridge Co., C.O's. 839, 840 & 841, Drawing #12, Engineer C. Scheidl, Draftsman B. Heald, Scale 1-1/2' = 1'0', April 16th, 1901.'
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