Project Update – June 14, 2021

What’s Happening in Traffic This Week

Highway 8 & 101 Street S.W. Right-in Right-out Only

Access at the Highway 8 and 101 Street S.W. intersection is now restricted to right-in, right-out. No left turns are permitted at the intersection.

This intersection is currently within the Southwest Calgary Ring Road project limits. For more information about this traffic pattern change, please visit

Crestmont Boulevard S.W. Single Lane Alternating Traffic

Utility work continues on Crestmont Boulevard S.W. this week. Single lane alternating traffic is in effect.

Trans-Canada Highway Reduced to One Lane Overnight 

From June 16 to 22, from 10 p.m. to 5 a.m. each night, the Trans-Canada Highway will be reduced to a single lane in each direction at the Stoney Trail interchange. The lane closures are needed for bridge girder installation. Delays are expected.

Old Banff Coach Road S.W. Shifting to Eastbound Lanes

This week, westbound traffic on Old Banff Coach Road S.W. will be shifted to the eastbound lanes for storm line construction.

101 Street S.W. South of Heritage Woods Drive S.W.

Next week, on June 21 and 22, between 8 a.m. and 3 p.m., a portion of 101 Street S.W. just south of Heritage Woods Drive S.W. will operate as a single lane of alternating traffic. ENMAX will be relocating utilities.

Thank You!

The ramp from southbound Stoney Trail to westbound Trans-Canada Highway was paved this weekend. The paving happened overnight to minimize traffic impacts, which meant disruptions for adjacent residents. We sincerely appreciate your patience and understanding.

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.

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South Bridge Piers

North Pier Segments

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April Progress Snapshot

There wasn’t much of a winter slowdown on the North project this year. April’s major milestones included two bridge decks poured and ground improvements for the Valley Ridge Boulevard N.W. interchange bridges.

Crestmont Boulevard S.W. Re-alignment

After a significant amount of preparation in this previously undeveloped area – earthworks, relocating and installing new utilities, grading – road construction for the new Crestmont Boulevard S.W. alignment is underway.

Ramp paving – Eastbound Trans-Canada Highway to northbound Stoney Trail

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Subgrade Preparation in the Springbank Ravine

Transportation engineers refer to the native material underneath a road or bridge structure as the subgrade. The marshy earth in the Springbank Ravine is not a suitable subgrade to support the road. Work to remove and replace it with more suitable materials has been ongoing since last fall. 

The ravine will remain a natural drainage course and continue to convey stormwater through a culvert installed in its place. 

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Pavement Quality Control

Quality control for asphalt pavement includes smoothness testing and checking for segregation. Segregation is when the gravel aggregate and cement used to form asphalt separate, resulting in a less durable pavement.

There are a number of ways to test pavement smoothness, and even an International Roughness Index to rate the uniformity of the pavement surface, also known as surface regularity.

A straight edge test is a simple and effective way to test smoothness by measuring low points in the pavement. It works by laying a steel straight edge on the pavement so both ends are touching the road surface and visually identifying gaps between the straight edge and the pavement. Then the gaps are measured with a ruled or graded wedge – a wedge with measurements to determine the height of the gap.