Share this page Print

Southwest Calgary Ring Road project

The design and construction of the SWRR has been contracted to KGL Constructors. Their webpage contains additional information on construction, changes to traffic patterns, and detours.

Traffic advisories

Lane closures at the intersection of 46 Avenue and 37 Street S.W.

In order to install a new waterline, there will be traffic restrictions at this intersection.

  • Closure of right northbound lanes on 37 Street, resulting in single lane traffic—vehicles will need to use the northbound left turn lane for both turns and straight-through traffic
  • Closure of the right eastbound lane of 46 Ave. approaching 37 Street, resulting in single lane traffic
  • Access will be maintained in all directions at the intersection during this time.

Northbound lanes will be impacted from March 30 – April 25, and eastbound lanes are impacted from April 15 – 18.

These lane closures are in effect 24-hours per day (until April 25) and crews are working onsite between 7 a.m. and 10 p.m. This work is weather dependent.

Permanent closure - 45 Stree​t S.W. access at Glenmore Trail

As part of the future SW Ring Road, the 45 St. SW access at Glenmore Tr. is permanently closed. You can read more about the closure on the SW Calgary Ring Road project web page:

About the Southwest Calgary Ring Road

The Southwest Calgary Ring Road (SWRR), a project of the Province of Alberta, is one of the last sections of the Calgary Ring Road, which will circle the city when completed. Planning for the Calgary Ring Road began in the 1970s, and the northwest, northeast, and southeast sections of the road (known as Stoney Trail) are completed and in use. Construction on the southwest section is currently underway, and will open to traffic in fall of 2021. Construction on the west section of the Ring Road is scheduled to begin in 2018.

When the Calgary Ring Road is complete, it will offer 101 kilometers of free-flow travel around Calgary and contribute to safe and easy movement of goods and people in and around the city.

The Government of Alberta is responsible for the design, construction, management and operation of Calgary's Ring Road, while the City of Calgary is responsible for the design and construction of street connections to the SWRR, road improvements, and intersection improvements, because they are located within city limits.

Southwest Ring Road Schedule & Current Status

  • 2005-2009 - Meetings to get public feedback
  • November 2013 - Land transfer agreement with Tsuut’ina Nation
  • Summer 2016 - Preliminary construction of the SWRR began
  • Spring 2017 - Major construction began
  • Fall 2021 - Expected completion of the SWRR (open to traffic)

The SWRR will go from Highway 8 (near Elbow Springs Golf Course) to Macleod Trail S.E. The project includes rebuilding Glenmore Trail between Sarcee Trail and east of 37 Street S.W.

It consists of 31 kilometres of six- and eight-lane divided highway, 14 interchanges, 47 bridges, one road flyover, one railway crossing, one tunnel, and three river crossings over the Elbow River and Fish Creek.

For more information on the construction of the SWRR or to view alignment maps and traffic detours, please visit:

If you have additional inquiries or questions, please contact KGL Constructors by email at or 24 hours a day by phone at 403-212-0565.

Virtual Tour of the Southwest Ring Road

This video from the Government of Alberta will let you "fly over" the city to see the general location of this new section of the ring road and planned interchanges.


Title: Virtual tour of the Southwest Calgary Ring Road
Hide Title: False
Caption: Take a drive on the Southwest Calgary Ring Road
VideoID: GOCTjNYrqhE
Play from:
Play to:
Aspect Ratio: 16:9
Show Online: True
List Category: SWRR

Virtual tour of the Southwest Calgary Ring Road

Take a drive on the Southwest Calgary Ring Road
Virtual tour of the Southwest Calgary Ring Road

City of Calgary street connections and road improvements

The City of Calgary has been working to extend streets to connect Calgary's road network to the ring road, while improving some existing roads to make sure the SWRR fits with our city's road network. The links below provide information on all the City-led projects including streets connections to the SWRR, road improvements and intersection improvements.

Watch this video to see how The City has completed projects that will connect with the Southwest Calgary Ring Road.

The links below provide information on all the City-led projects including streets connections to the SWRR, road improvements and intersection improvements.

Street connections

Road improvements

Intersection improvements

Questions about City-led projects? Email The City of Calgary:

Elbow Bridge Crossing

The SWRR includes the construction of a highway bridge crossing over the Elbow River. This crossing is within the Transportation Utility Corridor (TUC), upstream of Weaselhead Park and The City's Glenmore Reservoir.

Some concerns were raised on the bridge design should another 2013-level flood take place. These resources address those concerns.

History and Background

For more information on the history and background of the SWRR, visit the Province of Alberta webpages listed below:

Stoney Trail / Calgary Ring Road

Calgary's Ring Road is located within The Province's Transportation Utility Corridor (TUC). The road is operated and maintained by the Government of Alberta.

To learn more about other sections of Calgary's Ring Road, visit these Government of Alberta web pages:

For more information on the Calgary Ring Road, you can email Alberta Transportation at:

Construction projects in SW Calgary

There are a number of other projects under construction in SW Calgary.

SW construction projects

Related projects