Project Update – June 28, 2021
What’s Happening in Traffic This Week
Crestmont Boulevard S.W. Single Lane Alternating Traffic
Single lane alternating traffic is back in effect along Crestmont Boulevard S.W. for utility work until Wednesday, June 30 and then again on July 5 and 6. The road will be fully open during the long weekend, July 1 to 4, to avoid disruptions.
Trans-Canada Highway Reduced to One Lane Overnight
The Trans-Canada Highway will be reduced to a single lane in each direction at the Stoney Trail interchange for bridge work from 10 p.m. on Wednesday, June 30, until 5 a.m., Thursday, July 1. Delays are expected.
REMINDER: Lower Springbank Road S.W. Single Lane of Alternating Traffic
ENMAX will be working along Lower Springbank Road S.W. to decommission overhead power lines until July 9. A single lane of alternating traffic will be in place adjacent to the areas where they are working.
All work is weather dependent. Please check 511 Alberta and The City of Calgary’s traffic information map for up-to-date information on traffic detours and speed reductions.
We appreciate your patience during construction.
North Pier Segment Construction
The ‘balance’ in balanced cantilever construction is starting to become visible as the pier segments extend further and further from the piers in mid-air.
Looking northeast at the northernmost pier 
Looking southeast at the pier closest to the river on the north side
For a quick refresher on balanced cantilever construction, check out the project updates from April 12 and May 10.
May Progress Snapshot
A bridge deck was poured almost every week in May, the new West Valley Road S.W. alignment was paved, and girders were installed on one span of the bridge from northbound Stoney Trail over the Trans-Canada Highway.
1 Avenue S.W. / 101 Street S.W. Roundabout
Looking east at the rough grades for the roundabout; two new mainline Stoney Trail bridges over 1 Avenue S.W. are visible in the background
Looking south down 101 Street S.W.; a grader spreads the second lift (layer) of granular base course (GBC) for the road and roundabout sub-base
The GBC has been compacted
Looking north from 101 Street S.W. at the roundabout intersection with 1 Avenue S.W.
Waterline Installation Along Canada Olympic Drive S.W.
Canada Olympic Drive S.W. is closed until late summer for utility installations, including relocating a waterline.
Looking east at the trench for the new waterline running under an existing utility casing pipe 
Backfilling the trench after the waterline is installed
Stoney Trail Interchange and Mainline
Old Banff Coach Road S.W.
Integral Bridge Abutments
A mud slab is thin layer of concrete that has no structural purpose. ‘Mud’ is typically a mixture of cement and sand, but no gravel, and often used for leveling or sealing. A mud slab was applied around the flexible pile casings for the bridge abutment to provide a clean and level working surface.
Looking east at the mud slab surrounding the steel piles for the west abutment
Integral abutments have been used on several bridges across the project – check out the February 1 and March 29 project updates for more detail.
Centre Pier Cap Formwork Stripped
Just above the blue fabric on the pier table safety railing, the top of the concrete pier cap is visible
Bow Trail S.W. Centre Piers
Two of the four centre piers have been poured
The blue styrofoam is placed over the sharp ends of the trimmed rebar to protect the crew helping to guide the concrete being poured into the pier forms
Sanitary Line Replacement at Bow Trail S.W.
The existing PVC sanitary line in the Transportation Utility Corridor (TUC), just north of Ascot Crescent S.W., was replaced with a high-density polyethylene pipe which will allow the road to be built over it.
The new sanitary pipe is placed in the trench
A temporary surface pipe was installed (seen to the left of the trench) while the existing pipe was replaced
With the sanitary line replacement complete, an excavator begins backfilling over the pipe