Macleod Trail / 162 Avenue S Interchange
Detour Phase 1
How DDI operates
Construction update - Oct. 18, 2016
The Macleod Trail and 162 Avenue South Interchange project achieved a major milestone on the weekend of Oct. 15/16 as Macleod Trail became a free-flow roadway underneath the partially completed 162 Avenue overpass.
There is still a significant amount of construction to be done as the City moves toward final completion in the fall of 2017 of Canada’s first urban Diverging Diamond Interchange.
The completed south side overpass will handle both east and west traffic over the next 12 months while crews construct the north side overpass. Pedestrian and cyclist access is also provided across Macleod Trail on the new overpass.
While the City is opening Macleod Trail to be free flow, there will be no immediate access for approximately two weeks to eastbound Sun Valley Blvd. and westbound 162 Avenue from southbound Macleod Trail while off-ramp work is completed. The City has suggested some alternate routes for motorists to use during the temporary ramp closure. The inconvenience of this southbound closure is a necessary part of achieving traffic free-flow on Macleod Trail a year earlier than originally planned.
About the project
The interchange at Macleod Trail and 162 Avenue S will be an integral part of The City’s overall transportation network, helping to enhance Macleod Trail as a free-flow gateway to the city from the provincial highway network. Construction of the interchange will enhance mobility for commuters, cyclists and pedestrians while accommodating access to surrounding businesses and services.
After completing an analysis of the traffic flow at the intersection and evaluating several designs, it was determined that the Diverging Diamond Interchange (DDI) was the most appropriate layout for an interchange at that location.
This is the first DDI to be constructed in Canada.
This project includes:
- an interchange at Macleod Trail and 162 Avenue which allows for free-flow traffic north and south on Macleod Trail underneath the interchange bridges
- two bridges over top Macleod Trail (as part of the interchange) for east and west traffic on 162 Avenue and Sun Valley Boulevard
- intersection improvements at Shawville Blvd. and 162 Avenue
- a basketweave structure to accommodate access for southbound traffic onto Shawville Blvd. (south end of area shopping centre)
The project is being coordinated with Provincial plans for the Southwest Calgary Ring Road (SWCRR). The prime consultant for the project is ISL Engineering and Land Services Ltd. and Graham Infrastructure LP is the general contractor.
- Fall 2015: Completion of phase 1 construction
- Early 2016 – Fall 2016: Construction of first two bridge/overpass structures
- Fall 2016: Begin phase 2 of detour construction
- Winter 2016 – Fall 2017: Construction of third bridge/overpass structure and associated roadworks
- Fall 2017: Anticipated completion of project
This project has resulted in significant road and pedestrian road restrictions and closures.
While the City is opening Macleod Trail to be free flow, there will be no immediate access for approximately two weeks to eastbound Sun Valley Blvd. and westbound 162 Avenue from southbound Macleod Trail while off-ramp work is completed. The inconvenience of this southbound closure is a necessary part of achieving traffic free-flow on Macleod Trail a year earlier than originally planned.
The City has appreciated the patience of area residents and businesses, and of the motorists who have had to deal with numerous detours and lane closures over the past 15 months. We ask for continued understanding and patience from Calgarians as we complete this current detour connection, and work hard to finish the project over the next year.
Stakeholder communication and engagement has always been an important component of the Macleod Trail/162 Avenue Interchange planning process.
A total of three sets of public information sessions have been held related to this project.
In addition, two special sessions for businesses in-and-around the future interchange took place in April 2015 and March 2016.
Please fill out the online form if you have questions or require more information.