Stoney Trail

Beddington Trail crossing over Stoney Trail looking east.

Stoney Trail at Crowchild Trail

The northwest quadrant of the ring road was the first to be constructed. In the mid-1990s, the province of Alberta built the first segment around the Bow River Bridge connecting Highway 1 with Crowchild Trail. This was subsequently extended to Country Hills Boulevard. In 2003, the province announced plans for a 17-kilometre (11 mi) extension east to Deerfoot Trail. The original design was limited in scope and incorporated two interchanges, one flyover and two signalized intersections with completion scheduled in 2007 at a cost of $250  million. In January 2005, the province announced an increase in scope of the project with the addition of three additional interchanges at Crowchild Trail, Country Hills Boulevard and Scenic Acres Link.[6] In addition to increasing costs, the project was delayed and the full extension to Deerfoot Trail was not opened until November 2, 2009, although some sections were opened earlier. The portion of the ring road between Harvest Hills Boulevard and Deerfoot Trail opened to traffic on November 2, 2009. 30,000 to 40,000 vehicles were expected to use this segment daily.[7] Actual peak traffic volumes exceeded 40,000 vpd between Crowchild Trail and Country Hills Boulevard in 2010.[8]

Grading has been completed for a future interchange at 11 Street NE.[9] This road would service undeveloped industrial land bounded to the east by Deerfoot Trail, north by Stoney Trail, west by the CPR right-of-way and south by Country Hills Boulevard. No schedule has been set for the construction of this interchange. The interchange will also provide a road connection north of Stoney Trail.

The northwest ring road opened on November 2, 2009, with traffic signals at Harvest Hills Boulevard but grading was completed for a future possible interchange. On November 25, 2009, the province announced construction of the Harvest Hills Boulevard Interchange to be opening in fall 2010.[10] The cost of the interchange project was $14 million.[11] The interchange opened to traffic in 2010. Grading was completed for a future interchange at 14 Street NW. For many years there was a right-in-right-out access south of Stoney Trail into the Panorama Hills neighbourhood.[9] Planning for the construction of a right-in-right-out access north of Stoney Trail was announced in 2014 and completed the following year.[12][13] In summer 2014, grading began for westbound exit to 14th (northbound only) and southbound 14th entrance ramp to westbound Stoney. The city announced plans to fund this interchange in 2014.[14] Construction of the interchange began in 2019 and was completed in September 2021.[15][16]

A signalized intersection was initially constructed at Beddington Trail and Symons Valley Road, but it was upgraded to an interchange when the project was finished in 2009. This interchange opened in July 2009, when the segment from Sarcee Trail to Harvest Hills Boulevard was opened a few months ahead of the full extension to Deerfoot Trail.[17] Originally, Alberta Transportation intended only to construct a flyover at Shaganappi Trail, with no connections to the northwest ring road when the project was initiated but was upgraded to an interchange when the project was finished in 2009. This interchange opened in July 2009 when the segment from Sarcee Trail to Harvest Hills Boulevard was opened a few months ahead of the full extension to Deerfoot Trail.[17]

The bridge carrying Stoney Trail over the Bow River near Canada Olympic Park is being twinned as part of work on the final leg of the ring

At Sarcee Trail a signalized intersection was initially constructed, but upgraded to an interchange when the project was completed. The segment from Country Hills Boulevard to Sarcee Trail was opened on November 25, 2008, a year ahead of the full extension to Deerfoot Trail.[18] An interchange at Country Hills Boulevard was added to the northwest ring road project in January 2005 to replace the original signalized intersection built when this segment of the ring road was built in the 1990s.[6] The original project scope had this remaining as a signalized intersection. The interchange opened to traffic in September 2008.

A new interchange was announced on January 28, 2005, for Crowchild Trail as part of an upgrade to the $250 million project. Plans to extend the CTrain resulted in changes to the design of the interchange.[6] The Crowchild Interchange was constructed along a pre-existing portion of Stoney Trail,[19] and the design was modified to be free-flowing and to include an LRT bridge to allow for the CTrain to be extended west to Tuscany station.[20] The Crowchild interchange fully opened to traffic on September 28, 2011.[21]

In January 2005, an interchange at Tuscany Boulveard/Scenic Acres Link was added.[6][22] The full interchange opened to traffic in the fall of 2009. Following the completion of the Crowchild Trail interchange, the only remaining traffic signals were at the intersection with Nose Hill Drive. Aecom was retained in the spring of 2010 to plan, design and administer construction of this interchange to be open in the fall of 2012.[23] Design and public information delays caused Alberta Transportation to revise its expectations and it was announced that construction of the interchange would commence in early 2011 and be completed in the fall of 2013.[24] However, the tender process was slow to be initiated and it was not until November 17, 2011 that Alberta Transportation announced the Nose Hill Drive interchange would be built by Acciona Infrastructure Canada at a cost of $67 million and be opened to traffic in the fall of 2014.[25]

Looking west on Stoney Trail NE at its interchange with Deerfoot Trail

Construction of the 21 km (13 mi) northeast portion of the freeway began in 2007 and opened to traffic on November 2, 2009, connecting the Deerfoot Trail interchange to 17 Avenue SE (formerly Highway 1A).[26] In December 2005, Calgary had announced it was in talks with the province to expedite construction, and on February 22, 2007 Alberta's Ministry of Infrastructure and Transportation awarded a contract to the Stoney Trail Group public-private partnership consortium (P3) for construction of the project's first stage, and maintenance of the northwest and northeast sections of the ring road for 30 years following completion.[27]

Major interchanges along the northeast route include Métis Trail (which serves as an alternate link to the CrossIron Mills shopping area north of the city, Country Hills Boulevard, McKnight Boulevard, and 16 Avenue NE (Highway 1). A partial cloverleaf interchange was built at Métis Trail, a north–south expressway.[28] The City of Calgary opened the extension of Métis Trail between 80 and 96 Avenues NE on October 29, 2011.[29] Right-in/right-out ramps to 60 Street NE from eastbound Stoney Trail were completed on November 22, 2019.[30] Grading has been completed for a future interchange at 60 Street NE that will be completed when required,[31] and may also be future right of way for a CTrain extension.[28] On October 12, 2011, 96 Avenue was opened from Stoney Trail west to 60 Street NE, accessible only from the south.[32] The diamond interchange at McKnight Boulevard will be upgraded into a partial cloverleaf interchange when required. The project included a large cloverstack interchange at 16 Avenue NE.

Stoney Trail crossing the Bow River in southern Calgary.

On March 2, 2009, the Alberta Government announced construction would be proceeding on the remaining portion of the East Freeway from 17 Avenue SE to Highway 22X, as well as improvements to the existing Highway 22X roadway between that location and just east of the Macleod Trail (Highway 2A) interchange. This portion, like the northeastern portion, was built as a P3.[33] Three firms bid on the contract: Chinook Partnership, SEConnect and SE Calgary Connector Group.[34] The winning bid of $769 million was submitted by Chinook Roads Partnership.[35] Chinook Roads Partnership will also be responsible for maintenance of this portion of the Ring Road, as well as maintenance of Deerfoot Trail between Highway 22X and Highway 2A for 30 years after construction completion.

Construction on the southeast leg began in the spring of 2010, and was opened on November 22, 2013, almost two months behind schedule.[36] The southeast extension of Stoney Trail also resulted in upgrades to Highway 22X between Stoney and Macleod Trails. When the extension opened in 2013, the City officially renamed this portion of 22X as part of Stoney Trail, and the province designated it as part of Highway 201. Highway 22X continues west of Macleod Trail as Spruce Meadows Trail, while 22X continues east of Stoney Trail toward Gleichen.

An interchange was constructed at Sun Valley Boulevard / Chaparral Boulevard, upgraded from the existing intersection.[37] The original project schedule from June 2010 had interchange construction starting in 2010 with construction of the bridge structure in 2011 towards a phased opening in 2012–2013.[38][39]

The McKenzie Lake Boulevard / Cranston Boulevard intersection was upgraded to a modified diamond interchange; work on this interchange began 2010 and by fall 2011 the bridge structure had been erected.[40] The interchange design is a modified diamond and integrates into the nearby cloverstack interchange at Deerfoot Trail.[41]

A partial cloverleaf interchange was constructed at 52 Street SE.[42] The original project schedule from June 2010 had this interchange fully opening in the fall of 2013 with traffic on the new structure in the summer of 2012 with construction starting in 2011.[38] The revised project schedule of June 2011 still indicated a fall 2013 opening, the only significant difference is the temporary constructions detour road has been shifted to the east side of the bridge structure from the west side.[39] As of December 2011, construction of the interchange had started with grading of the interchange ramps and piling installation. 52 Street interchange was completed with the rest of the project on November 22, 2013. At 88 Street SE, Stoney Trail intersects with 22X with a hybrid interchange. An existing intersection at 88 Street SE was removed.[43] Grading was also completed for a future interchange at 130 Avenue.[44] A similar partial cloverleaf interchange was constructed at a slightly realigned 114 Avenue SE. The interchange fully opened on November 22, 2013.

Partial cloverleaf interchanges were constructed at Glenmore and Peigan Trails.[45] Peigan Trail was also be extended from 52 Street to Stoney Trail as a result. The existing 17 Avenue SE intersection, which had been the terminus of the freeway since 2009, was upgraded to a partial cloverleaf interchange.[46]

On October 1, 2020, the northern section of the southwest leg of Stoney Trail opened. This extended the total length by 9 km, from Glenmore Trail to Fish Creek Boulevard. This section was built on the Tsuut'ina Nation, and was brought with many delays. Construction began in 2016, and the segment that goes through the nation is designated as Tsuut'ina Trail. The final 4 km connecting Fish Creek Boulevard to Highway 22X opened one year later, on October 2, 2021. The southwest leg extended Stoney Trail from Macleod Trail to Highway 8, continuing west towards the next section to be constructed.