Project Update – October 11, 2021
What’s Happening in Traffic This Week
Lane Closures on 17 Avenue S.W. – Slopeview Drive to St. Moritz Drive S.W.
There will be various lane closures on 17 Avenue S.W., from west of Slopeview Drive S.W. to east of St. Moritz Drive S.W., until the end of the month for utility relocations. At times, 17 Avenue S.W. will operate as a single lane of alternating traffic controlled by flag people on the road. This is required for directional drilling underneath the road.
Please drive cautiously and expect delays.
1 Avenue S.W.
Starting tomorrow, October 12, and ending Friday, October 15, 2021, 1 Avenue S.W. west of 109 Street S.W. will be reduced to a single lane of alternating traffic from 9 a.m. to 3 p.m. each day.
101 Street S.W. Temporarily Closed North of 17 Avenue S.W.
From 11:30 p.m. on Tuesday, October 12 to 11:30 p.m. on Saturday, October 16, 101 Street S.W. will be closed north of Township Road 242 / 17 Avenue S.W. to construct the new alignment.
101 Street S.W. will be accessible from Old Banff Coach Road S.W.
Valley Ridge Boulevard N.W. / 109 Street S.W.
Last week traffic was shifted to a new detour and many drivers experienced delays trying to get out of their community. Flag people were on site last week to improve traffic flow in this area and the project team is actively working to determine the best traffic management solution to address the congestion as quickly as possible.
This detour configuration is required to construct the rest of the roundabout intersection which will provide access to eastbound Trans-Canada Highway.
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.
Cast-in-Place Superstructure
For the Bow River Bridge, the superstructure – the part of the bridge that supports the deck and carries the ‘live load’ – is being constructed using a balanced cantilever method. This involves casting pier segments using moveable forms. Together, the pier segments make up the superstructure.
Looking north at the bridge superstructure 
Looking north at the pier immediately south of the river; the piers on the north side of the river are visible in the background
Ramp to Eastbound Trans-Canada Highway
Grading for the ramp from Valley Ridge Boulevard N.W. / 109 Street S.W. to eastbound Trans-Canada Highway continues.
Looking west at the ramp from Valley Ridge Boulevard N.W. / 109 Street S.W. to eastbound Trans-Canada Highway (above and below) 
18 Down, Two to Go
Last week the eighteenth deck was poured on one of the bridges that connects northbound Stoney Trail to westbound Trans-Canada Highway.
The tilt or bank on this bridge is called superelevation, which helps to counter the forces on a vehicle as it is travels through a curve.
Looking south at the first stage of the deck pour 
Image sourced from https://www.bigrentz.com/blog/superelevation
Looking south at the second stage of the deck pour 
Concrete is pumped from both sides of the bridge to pour the north half of the deck
Bow Trail S.W. Pathway Underpass
The pre-cast concrete box culvert for the pathway underpass under Bow Trail S.W. has arrived on site. Box culverts are often used when a smaller structure is required, such as crossing small streams or for pedestrian underpasses like this one.
The box culvert underpass structure is inspected after being placed on site 
Looking east at the pathway underpass structure
