Project Update – June 29, 2020
For up-to-date information on traffic detours and speed reductions, please visit 511 Alberta.
We appreciate your patience during construction.
South Side Progress
Work continues on the drainage system on the slope south of the Bow River
A pipe slope drain is a temporary or permanent pipeline, typically using flexible pipe, that conveys runoff down steep slopes without causing erosion.
Work on the cofferdam on the south side of the river continues 
View of the cofferdam from above
Trans-Canada Highway Reduced to One Lane Nightly
From 10 pm to 6 am each night between Monday, June 29 and Thursday, July 2, traffic will be reduced to one lane in each direction on the Trans-Canada Highway east and west of Stoney Trail. These closures are needed to install the overhang brackets to support the bridge deck formwork.
Girders installed on the south side of the bridge last week complete the span across the Trans-Canada Highway 
Looking south toward the horizon, the future road alignment is starting to become visible
Controlled Blasting Resumes July 6
A reminder that controlled blasting will resume on Monday, July 6. For more information, please visit westringroad.ca > Controlled Blasting.
Excavators load buggies with blast rock – June 23, 2020 
Excavators load buggies with blast rock – June 24, 2020
Trans-Canada Highway/Stoney Trail Interchange
Work on centre pier columns for Stoney Trail mainline bridges
Excavation for Pond 5 is ongoing
Clay stockpiles for Pond 5 liner
Liners are constructed from low permeability materials, such as clay, geomembrane or concrete, and reduce the likelihood that pollutants in stormwater will reach ground water by slowing infiltration from the stormpond into the ground.
Crews place and compact the clay liner for the stormpond
Trans-Canada Highway/Valley Ridge Boulevard N.W. Interchange
With integral bridge abutments (as shown below), the foundation piles are sometimes driven through vertical Corrugated Steel Pipe (CSP) casings. The CSP sleeves and the styrofoam beads (in bags) poured around the piles allow the piles to move as the bridge expands and contracts.
Inside casing with Stryofoam beads
Excessively rainy weather makes for challenging conditions; crews pump the muddy water through a system that prevents sediment from entering the storm system or natural water course 
“Benching” refers to steps cut during excavation to help avoid the creation of a slip plane down which earth can slide 
Formwork for the wall is installed on top of the footing poured earlier this month 
Crews install forms for vertical wall
South Project Contract Awarded
Last week, the contract for the South project was awarded to Calgary Safelink Partners for $277 million. Some preliminary work will begin this summer, with the majority of construction starting in the Spring of 2021. The completion date for the South project has been updated to 2024 to accommodate the regulatory process that was required to relocate the ENMAX transmission lines, as well as considerations for the COVID-19 pandemic.
For more information about the project, please visit westringroad.ca > South Project.
Detour on Old Banff Coach Road SW for Utility Work
From late June to mid-July, there will be a detour on Old Banff Coach Road, east of 101 Street SW, to accommodate relocating a City of Calgary potable water feedermain. The detour will affect traffic in both directions and the speed limit will be reduced to 30 km/h through the area.
For more information, visit The City of Calgary’s interactive road closures map.