 | This article needs to beupdated. The reason given is: The proposed freeway upgrade was scrapped in October 2018 and remains designated as an expressway. Please help update this article to reflect recent events or newly available information.(July 2025) |
| 170 Street SW | |
   Start/End points of Terwillegar Drive | |
| Maintained by | City of Edmonton |
|---|---|
| Length | 10.7 km (6.6 mi)[1] |
| Location | Edmonton |
| North end | Whitemud Drive |
| Major junctions | Rabbit Hill Road,23 Avenue,Anthony Henday Drive, Windermere Boulevard, Ellerslie Road |
| South end | 41 Avenue SW (city limits) |
Terwillegar Drive is a developingfreeway in south-westEdmonton,Alberta. It is under construction, with the majority of its intersection at-grade, it retains itsarterial road status. Once completed, it will be the third freeway in Edmonton not to have a highway designation afterGroat Road andWayne Gretzky Drive. South of Windermere Boulevard the roadway goes by170 Street SW.
Terwillegar Drive begins atWhitemud Drive where Whitemud Drive turns from an east-west to north-south orientation as it approaches theNorth Saskatchewan River, and is accessible via a modifiedtrumpet interchange with left exit ramps. It travels in a southwest direction through theRiverbend andTerwillegar Heights areas, passing through threesplit intersections that are staged for futurediamond interchanges. Terwillegar Drive crossesAnthony Henday Drive and enters theWindermere area. At Windermere Boulevard, another split intersection, Terwillegar Drive enters the southwest (SW)quadrant and becomes 170 Street SW, turning south. 170 Street SW continues south toEllerslie Road / Hiller Road (Ellerslie Road was realigned from the 9 Avenue SW alignment, the original alignment is slated to be removed)[2] where 170 Street is misaligned (aligned to the southbound and northbound off-ramps of a future diamond interchange) and continues south as a rural road. At41 Avenue SW, the roadway entersLeduc County and continues south as Range Road 253.
The City of Edmonton is presently engaged in two planning studies to upgrade Terwillegar Drive and 170 Street SW to a freeway, which was originally envisioned in the 1980s.[3][4] While theright-of-way is protected, the interchange plans are still in the design stage and there is no timeline set for construction. It remains to be seen if the 170 Street SW section will be renamedTerwillegar Drive; current planning documents refer to both names.
Additionally, there are plans to extend the freeway into Leduc County. It would go west of theEdmonton International Airport, and then swing east acrossHighway 2 and joinHighway 2A south ofLeduc.[5][6]
Terwillegar Drive is the main spine and highway that travels through the Riverbend/Terwillegar/Windermere area of Southwest Edmonton. The list of specific neighbourhoods that Terwillegar Drive runs through, in order from south to north are:[7]
This is a list of major intersections, starting at the north end of Terwillegar Drive.[7]The entire route is inEdmonton.
| km[1] | mi | Destinations | Notes | ||
|---|---|---|---|---|---|
| 0.0– 0.5 | 0.0– 0.31 |  Whitemud Drive (Highway 2) | Modifiedtrumpet interchange | ||
| 0.7 | 0.43 | Bulyea Road / 40 Avenue NW | Split intersection (traffic signals);diamond interchange proposed[3] | ||
| 1.7 | 1.1 | Rabbit Hill Road | Split intersection (traffic signals); diamond interchange proposed[3] | ||
| 3.1 | 1.9 | 23 Avenue NW / Riverbend Road | Split intersection (traffic signals); diamond interchange proposed[3] | ||
| 3.8 | 2.4 | Haddow Drive | At-grade (traffic lights); flyover proposed[3] | ||
| 4.7– 5.0 | 2.9– 3.1 |  Anthony Henday Drive (Highway 216) | Diamond interchange (exit 8 on Hwy 216);combination interchange proposed[3][4] | ||
| 6.0 | 3.7 | Windermere Boulevard | At-grade (traffic signals); diamond interchange proposed[4] | ||
| South end ofTerwillegar Drive • North end of170 Street SW | |||||
| 6.4 | 4.0 | Wates Link / Ambleside Link | Right-in/right-out (no cross traffic); future closure[4] | ||
| 7.0 | 4.3 | Washburn Drive / Anderson Way | At-grade (traffic signals);Overpass proposed[4] | ||
| 7.4 | 4.6 | Ellerslie Road (9 Avenue SW) west | At-grade; future closure[4] | ||
| 7.8– 7.9 | 4.8– 4.9 | Ellerslie Road east / Hiller Road | At-grade; 170 Street SW offset; diamond interchange proposed[4] | ||
| 10.7 | 6.6 | 41 Avenue SW | At-grade (city limits); diamond interchange proposed[4] | ||
| Continues asRange Road 253 | |||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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