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Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey
 10 b&w photos |  2 data pages |  1 photo caption pages |
How to obtain copies of this item
TITLE:
Keystone Bridge, Spanning South Platte River, Waterton vicinity, Jefferson County, CO
CALL NUMBER:
HAER COLO,30-WATER.V,2-
REPRODUCTION NUMBER:
[See Call Number]
MEDIUM:
Photo(s): 10 (4 x 5 in. and 8 x 10 in.)
Data Page(s): 1 plus cover page
Photo Caption Page(s): 1
DATE:
Documentation compiled after 1968.
CREATOR:
Historic American Engineering Record, creator
NOTE:
Survey number HAER CO-9
Significance: The bridge is a pin connected iron Pratt through truss, manufactured by the Keystone Bridge Company of Pittsburgh, Pennsylvania. It was probably built originally for the Denver, South Park, and Pacific Railroad other stone piers on the site indicate that this is probably the second bridge on the site. The bridge was removed from railroad service about 1935 and was planked for automobile traffic. In 1978, the bridge was planned to be dismantled, piece marked and reassembled in another location...
SUBJECTS:
COLORADO--Jefferson County--Waterton vicinity
civil engineering
moving of structures
railroad companies
OTHER TITLE:
Mill Gulch Bridge
COLLECTION:
Historic American Engineering Record (Library of Congress)
REPOSITORY:
Library of Congress, Prints and Photograph Division, Washington, D.C. 20540 USA
DIGID:
http://hdl.loc.gov/loc.pnp/hhh.co0019
CONTENTS:
Photograph caption(s):
1. Detail view of name plate on top of NW entrance to bridge.
2. Detail view of end post at southeast corner of bridge.
3. General view of bridge looking southeast.
4. Detail view of northwest abutment and bridge seat.
5. Detail view of lower panel point on east side of bridge.
6. General view of bridge portal from northwest.
7. Detail view of lower chord pin connection with U-bolt and riveted floor beam.
8. General view of floorbeams and stringers.
9. Photocopy of sheet 17 of 20 from drawing set titled 'South Platte Canyon Road: Existing Bridge-Dismantle' March 29, 1974; sheet shows plans of top and bottom cards. Courtesy of Denver Water Works.
10. Photocopy of sheet 18 of 20 from drawing set titled 'South Platte Canyon Road: Existing Bridge-Dismantle' March 29, 1974; sheet shows truss elevation and details of joint sheet 18-20.
CONTROL #:
CO0019
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