194 avenue: world’s tallest causeway* *(probably) i - jack mason… · 194 avenue: world’s...
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194 Avenue: World’s Tallest Causeway*
Presented to the esteemed attendees of the inauguralTransportation Connects Alberta Conference and Tradeshow
1 April 2019
Jack MasonDave Galić
*(probably)
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Overview – InterimRed Deer 145km
Edmonton Airport ~150km
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Overview – Interim
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Future Interchange
• Access to North leg of Macleod Trail only• 30% Design is complete• Straightens out 194 Ave
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Future Interchange
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Profile
• Up to 15m of fill• 540,000m3 of imported dirt• World’s Tallest Causeway*
Terrestrial Wildlife9
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Terrestrial Wildlife
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Terrestrial Wildlife
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Northern Leopard Frog – Heard, but not Seen
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Cattle Grazing
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Algae Bloom
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Animal Remains Trigger Warning
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Kevin – Sin City25
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Wetland Regulatory27
• Desktop Precipitation and historical photograph analysis
• Field Assessment (ABWRET-A)
• Wetland Assessment and Impact Report (WAIR)
• Assessment of Permanence (Public Lands Act)
• Water Act Application• Public Notice• Compensation
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Original Concept: Terrestrial / Aquatic Culvert
~50m long
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Original Concept: Terrestrial / Aquatic Culvert
~70m long
Original Concept: Terrestrial / Aquatic Culvert
• Too long: 70m vs. 35m• Unfavourable openness ratio• Staging tricky• Geotechnical challenges
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Separate Terrestrial and Aquatic Bridges
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Terrestrial Wildlife Patterns
37 Diversion Poles
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Construction Begins39
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Savannah Sparrow Nest Protection
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Red-Tailed Hawk Nest Protection
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Turbidity Curtain
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Fish Salvage
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Rare Plant Transplant: False Western Gromwell
Rare Plant Transplant 45
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Leafy Spurge
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Riparian Topsoil Stockpile
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• Slope Stability through the slough
• Large amount of settlement with a two year construction schedule• Wick Drains• Top-Down Construction
Geotechnical Challenges
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Working Platform Construction
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Working Platform Construction
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Working Platform Construction
Why Vertical Wick Drains?52
Thurber estimated that to reach 1900mm of settlement, it would take:19 years without wick drains vs.300 days with wick drains
https://www.youtube.com/watch?v=gvPVka0tO4U
Wick Drain Animation53
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Wick Drains
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Wick Drain Challenges
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Wick Drain Pre-Drilling Rig
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Wick Drain Installation
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Wick Drain Installation
~ 208,000 linear metres of wick drains were installed
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Settlement
Preload
Quiz Time: Embankment Quantities in Candy60
Tallest fill height in gummy bears?
Number of skittles required to fill the causeway (from CPR to Macleod Trail)? 317,146,676,970~4.5 years’ worth of annual global production
boingboing.net
flickr.com
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Settlement Requirements
62 Top Down Construction of the World’s Tallest Causeway*
Piling
63 Top Down Construction of the World’s Tallest Causeway*
Abutments
64 Top Down Construction of the World’s Tallest Causeway*
Girders
65 Top Down Construction of the World’s Tallest Causeway*
Preload Fill Removal
66 Top Down Construction of the World’s Tallest Causeway*
Preload Fill Removal
67 Top Down Construction of the World’s Tallest Causeway*
Shear Key Construction
68 Top Down Construction of the World’s Tallest Causeway*
MSE Wall Construction
69 Top Down Construction of the World’s Tallest Causeway*
Final Grouting
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Planting Riparian Vegetation
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Finishing TouchesGreen Side UpRiparian Vegetation
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