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Thermopolis vicinity

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Four Mile Bridge, Spanning Big Horn River on County Road No. 173, Thermopolis, Hot Springs County, WY



B&W Photos

HB1303009
View Looking West Toward East Web

HB1303010
View Looking East Toward West Web

HB1303011
Standard 175-foot Steel Truss

HB1303012
Standard 175-foot Steel Truss

HB1303013
Standard 175-foot Steel Truss

HB1303014
Standard 60-foot Steel Truss

HB1303015
Standard 95-foot Low Truss

HB1303016
Abutment And Pier Details

HB1303017
Revised Concrete Caisson Pier Detail

HB1303018
Revised Reinforced Concrete Pier Detail

HB1303019
Reinforced Concrete Abutment And Pier


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Big Horn River on County Road No. 173, Thermopolis vicinity, WY

Find maps of Thermopolis, WY


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER WY-59
Building/structure dates: 1928 initial construction
Significance: The Four Mile Bridge is one of only two rigid connected Pennsylvania Through trusses with substruts still functional on the state and county roads in Wyoming. With a simple span of 175 feet, it is the longer of the two. As such, it is an uncommon truss type for a highway bridge, more usually associated with railroad spans, and is one of Wyoming's more significant trusses.

Subjects
Steel Truss Bridges
Vehicular Bridges


Related Names
Smith, Charles M.
Wyoming State Highway Department


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. VIEW LOOKING WEST TOWARD EAST WEB
2. VIEW LOOKING EAST TOWARD WEST WEB
3. STANDARD 175-FOOT STEEL TRUSS
4. STANDARD 175-FOOT STEEL TRUSS
5. STANDARD 175-FOOT STEEL TRUSS
6. STANDARD 60-FOOT STEEL TRUSS
7. STANDARD 95-FOOT LOW TRUSS
8. ABUTMENT AND PIER DETAILS
9. REVISED CONCRETE CAISSON PIER DETAIL
10. REVISED REINFORCED CONCRETE PIER DETAIL
11. REINFORCED CONCRETE ABUTMENT AND PIER


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