Photos
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64 Foot Truss - Oblique View Of The 64 Foot Pony Truss Showing Its General Configuration. The 80 Foot Pony Trusses Are Similar Photo taken by Historic American Engineering Record |
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South Approach To The Through Trusses As Seen From The Roadway Photo taken by Historic American Engineering Record |
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80 Foot Pony Truss - Underside Of Bridge, Looking North, Showing The Original Pier And The Outrigger Type Extension To Raise And Level The Present-Day Support For The Pony Trusses Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - North East Bearing Abutment Of The Second Through Truss, Showing That The Bearing Point Is To The Backmost Position Of The Concrete Pier. This Bearing Point Is On A Concrete Extension Of The Original Bearing Point Now Covered Photo taken by Historic American Engineering Record |
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80 Foot Pony Truss - Looking East From The Upstream Side, View Of A Single Pony Truss Showing Its General Arrangement On Replacement Piers, Circa 1966 Photo taken by Historic American Engineering Record |
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North Approach To The Through Trusses As Seen From The Roadway Photo taken by Historic American Engineering Record |
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Pony Trusses - Pier Between The 64 Foot Truss And The First 80 Foot Truss. View Of The Lower Chord Pin Connection At The Juncture Of The Two Pony Trusses As They Sit On The Replacement Pier Added, Circa 1966. Shows The Floor Beam, Chord Eye Bars. The Photo taken by Historic American Engineering Record |
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80 Foot Pony Truss - Detail Of The Lower Cord Pin Connection, Typical Of The 80 Foot Trusses And Similar To The 64 Foot Truss, Where The Vertical Lace Post Joins The Upper And Lower Chords. There Are Two Pair Of Each 80 Foot Truss And A Single Pair O Photo taken by Historic American Engineering Record |
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80 Foot Pony Truss - View Of Upper Chord Pin Connection At The End Post, Typical Of The Five 80 Foot Trusses And Similar To The 64 Foot Tress. There Are Two Pair Per Pony Truss For A Total Of 24. Shown Are The Vertical Lace Post, End Post, Top Chord Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - Looking West From The Downstream Side, View Of A Single Through Truss Showing Its General Arrangement On Extended Column Piers Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - A Typical Lower Chord Pin Connection, Located Below Each Vertical Lace Post On The Through Trusses. Each Truss Has Four Of These For A Total Of Eight. Shown Is The Floor Beam Below The Pin Connection, And The Four Inch Condui Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - Looking North From The Deck Through The South Portal Of The First Through Truss, To Show The General Configuration Of The Upper Part Of The Structure Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - Detail Of An Upper, Inside, Corner Of A Through Truss. Shows The Upper Chord Pin Connection, End Post, Lateral Lace Strut And Sway Bracing. There Are Four Of These Per Through Truss, For A Total Of Eight Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - Looking North From The Deck Through The Exit Portal Of The Second Through Truss, Showing The General Arrangement Of The Underside Of The Upper Part Of The Structure Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - Overhead View Showing The Upper Configuration Of The Through Trusses Photo taken by Historic American Engineering Record |
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100 Foot Through Truss - Bridge Original Identification Plaque Located On The Top Of The North Portal Entrance Photo taken by Historic American Engineering Record |
Facts
- Overview
- Through truss bridge over Thomes Creek on Rawson Road
- Location
- Tehama County, California
- Status
- Replaced by a concrete beam bridge in 2004
- History
- Built 1900; rehabilitated 1979
- Builders
- - Pacific Construction Co.
- William F. Luning
- Design
- The Thomes Creek Bridge was the oldest multiple span truss bridge in Tehama County, and was one of the oldest examples of both pony and though types of pin connected steel pratt trusses with integrity of location in a seven county region. It was designed by William F. Luning, an engineer of local historical significance.
(Information from HAER CA-136) - Dimensions
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Length of largest span: 100.1 ft.
Total length: 673.9 ft.
Deck width: 17.7 ft.
Vertical clearance above deck: 16.7 ft.
- Recognition
- Eligible for the National Register of Historic Places
- Approximate latitude, longitude
- +39.97694, -122.22583 (decimal degrees)
39°58'37" N, 122°13'33" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 10/566105/4425485 (zone/easting/northing)
- USGS topographic map
- Corning
- Inventory numbers
- CA 8C-47 (California bridge number)
BH 11683 (Bridgehunter.com ID) - Inspection (as of 11/2006)
- Appraisal: Structurally deficient
Sufficiency rating: 30.4 (out of 100) - Average daily traffic (as of 1983)
- 141
Sources
- Michael Goff - michael [dot] goff [at] odot [dot] state [dot] or [dot] us
- HAER CA-136 - Weidemeyer Bridge