The Primrose East Bridge
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Transcript of The Primrose East Bridge
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PRIMROSE EAST BRIDGE
Implementation of Folded Plate Technology & Geosynthetic Reinforced Soil-Integrated
Bridge System
2016 Concrete Paving WorkshopJason Volz
NDOR Construction
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Primrose BridgePrimrose East Bridge:
• Constructed Fall 2014
• On a county road east of Primrose
• Contractor: Simon Contractors
• Designer: NDOR Bridge Division
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Primrose BridgeNew Technologies:
• GRS Abutment• Folded Plate
Girder• Ultra-High
Performance Concrete
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Geosynthetic Reinforced Soil (GRS) Integrated Abutment:
• Accelerated Construction
• No Crane/Pile Hammer
• No Specialized Labor
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Folded Plate Girder:
• Developed at UNL
• Light Weight
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Ultra High Performance Concrete:
• 21,000 psi at 28-days
• Narrow Joints• Minimal
Shrinkage
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Primrose BridgeOther Innovative Features:
• Pre-Fabricated Bridge Elements
• Accelerated Bridge Construction (ABC)
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DECK CONSTRUCTION:
• Girders Delivered July 1st
• Offsite location used for casting deck
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GIRDER DELIVERY• Elevation and
Layout of Girders Matched Bridge
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SHORED CONSTRUCTION• No Camber in
Girders• Required
Continuous Unyielding Support
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DECK FORMING• Formed and
poured all at once
• Prevented problems with bar interference
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DECK POUR• 47BD-4000• White Pigment/
Wet Burlap Cure
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8” DECK JOINT• Required
exposed aggregate finish.
• Forms treated with set-retarder
• Power washed 12-24 hours after pour
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LIFTING DEVICES• Orientation
required two cranes
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BRIDGE SITE• Large Drainage
Area • Flooding
Overtopped Road
• Road Closed for Construction Sept 15
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GRS ABUTMENT • 2’ Reinforced
Soil Foundation• 13’ GRS
Abutment• 4’ Integrated
Approach
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EXCAVATION• Unsuitable
material removed and replaced with granular fill
• Layout of delivered materials
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REINFORCED FOUNDATION• 2 ft thick
“Burrito” beneath abutment and wings
• Extra layer of fabric on abutment side
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LEVELING COURSE• Critical to
maintaining wall alignment
• <0.5” of granular to help level
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GRS Abutment• Step 1: Place
block
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GRS Abutment• Step 1: Place
block• Step 2: Place
Select Granular Backfill and compact
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GRS Abutment• Step 1: Place
block• Step 2: Place
Select Granular Backfill and compact
• Step 3: Place Geosynthetic Fabric
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CMU BLOCK WALL• Red line at
berm elevation for scour monitoring
• Hollow vs solid block
• Split face block
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LOADING GIRDERS • 4 -Flatbed
Trucks• 2-Cranes
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SETTING GIRDERS• No rebar
interference problems
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UHPC EQUIPMENT• 3.5 cuft mixers• Shipped to site
in advance
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UHPC QUALITY CONTROL• All ingredients
are measured out
• Every batch is tested
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UHPC JOINT FORMING• Formed an 1/8”
high• Chimneys at 8’
spacing
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UHPC JOINT GRINDING• Grind 1/8’” to
remove voids• Hand grinders
vs bump grinder
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VOIDS IN UHPC• Filled with non-
cement grout
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WATER TESTING OF JOINTS• Joints were
water tight, no additional sealing required
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OPEN TO TRAFFIC• November 19th
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Special ThanksSimon Contractors:
• Dale Burkhead –Project Manager• Sid Smith – Project Superintendent
NDOR District 3• Steve Trosper – Project Manager• Monty Koch- Project Inspector
NDOR Bridge• Fouad Jaber – Asst. State Bridge Engineer• Steve Ferguson- Designer
Boone County• Darrel Thorin – Highway Superintendent