Sunday Creek Bridge #364C October 8, 2008 Spokane, WA Doug Walters, P.E. King County DOT Sunday...
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Transcript of Sunday Creek Bridge #364C October 8, 2008 Spokane, WA Doug Walters, P.E. King County DOT Sunday...
![Page 1: Sunday Creek Bridge #364C October 8, 2008 Spokane, WA Doug Walters, P.E. King County DOT Sunday Creek Bridge Replacement Utilizing Geosynthetic Reinforced.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649e745503460f94b74464/html5/thumbnails/1.jpg)
Sunday Creek Bridge #364C
October 8, 2008Spokane, WA
Doug Walters, P.E.King County DOT
Sunday Creek Bridge Replacement Utilizing Geosynthetic Reinforced Soil (GRS) Abutments
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Sunday Creek Bridge #364C
Project Location
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Sunday Creek Bridge #364C
Existing Log Stringer Bridge
![Page 4: Sunday Creek Bridge #364C October 8, 2008 Spokane, WA Doug Walters, P.E. King County DOT Sunday Creek Bridge Replacement Utilizing Geosynthetic Reinforced.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649e745503460f94b74464/html5/thumbnails/4.jpg)
Sunday Creek Bridge #364C
Bridge Deck
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Sunday Creek Bridge #364C
Typical Bridge Traffic Prior to Load Restrictions
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Sunday Creek Bridge #364C
Deficiencies
Structural• Timber cribbing abutments & log stringers damaged• Minor scour• 1997- Placed temporary shoring
– load limit of 3 tons
Environmental• Cited by the WA Department of Fish and Wildlife
– Temporary shoring within stream channel
![Page 7: Sunday Creek Bridge #364C October 8, 2008 Spokane, WA Doug Walters, P.E. King County DOT Sunday Creek Bridge Replacement Utilizing Geosynthetic Reinforced.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649e745503460f94b74464/html5/thumbnails/7.jpg)
Sunday Creek Bridge #364C
West abutment temporary shoring
I-Beam on Ecology Blocks
![Page 8: Sunday Creek Bridge #364C October 8, 2008 Spokane, WA Doug Walters, P.E. King County DOT Sunday Creek Bridge Replacement Utilizing Geosynthetic Reinforced.](https://reader035.fdocuments.us/reader035/viewer/2022062517/56649e745503460f94b74464/html5/thumbnails/8.jpg)
Sunday Creek Bridge #364C
East Abutment Temporary Shoring
Shoring Support
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Sunday Creek Bridge #364C
Typical rot on log stringers
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Sunday Creek Bridge #364C
Superstructure: Prefabricated Steel Truss
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Sunday Creek Bridge #364C
Superstructure Selection
• Hydraulic Opening – Above 100 year flood elevation – Changing road grade
• additional environmental permitting
• Narrow Haul Road
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Sunday Creek Bridge #364C
Superstructure: Prefabricated Steel Truss
3ft clear space
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Sunday Creek Bridge #364C
Foundation ConsiderationsBorings • Alternating layers of medium dense alluvial gravel, sand,
and silt
Abutment Foundation • Shallow foundation• Base of foundation below stream’s thalwag elevation
Sheet Pile Cutoff Walls • Allow dry construction• Provide additional scour protection
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Sunday Creek Bridge #364C
GRS Abutment Selection
Constructability• Avoid long concrete haul• Not weather dependent• Reduced time of construction
Cost Savings• Materials• General labor• Standard equipment
Environmental• No concrete placement
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Sunday Creek Bridge #364C
GRS Abutment Design Outline
• King County preliminary GRS abutment – NCHRP Report 556 “Design and construction of GRS
abutments”
• Mike Adams (FHWA) reviewed & refined design – Provided GRS design detail with layout
– continue to provide evaluation, design, and construction support
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Sunday Creek Bridge #364C
BRIDGE LAYOUT
22 ft
PLAN
104 ft
25 ft
14 ft
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Sunday Creek Bridge #364C
GRS ABUTMENT DETAIL
FINISHED GRADE LINE
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Sunday Creek Bridge #364C
CMU Block Schedule
11 ft
23 ft
5 ft
11 ft
9 ft
36 ft
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Sunday Creek Bridge #364C
Tasks to be completed
• Finalize Design
• Bid January 2009
• Construction June 2009
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Sunday Creek Bridge #364C
THANK YOU!Question?