Upgrades to the Whitemud Drive/Terwillegar Drive interchange are a part of the Terwillegar Drive Expansion Program.

Project Update - December 2022

Construction for Stage Two upgrades will begin in 2023. Site preparations will begin in late January with the removal of some trees along Whitemud Drive. Preserving the natural area is a key component to this project. New trees will be planted where possible once construction is complete. See the Construction Bulletin for more information.

Roadway construction is anticipated to begin in spring 2023. More information will be provided prior to construction starting including any detours and construction details.

About the Project

Stage Two builds on Stage One, including additional upgrades to increase the capacity of Terwillegar Drive, improve safety, accommodate current and planned transit services and enhance existing active transportation connections:

  • Widening and rehabilitating the Rainbow Valley Bridges: 4 lanes in each direction
  • Whitemud Drive/Terwillegar Drive interchange upgrades: 
    • Two lane widening: westbound Whitemud Drive to southbound Terwillegar Drive and northbound Terwillegar Drive to eastbound Whitemud Drive ramps
    • Partial 2 lane widening: northbound Terwillegar Drive to northbound Whitemud Drive and southbound Whitemud Drive to southbound Terwillegar Drive ramps
  • Whitemud Drive widening to 4 lanes in each direction: Terwillegar Drive to 122 Street
  • Southbound transit-only lanes between Fox Drive and Terwillegar Drive
    • ‘Bus-on-shoulder’ lane from Fox Drive to 53 Avenue
    • Segregated bus-only lane from 53 Avenue to Terwillegar Drive
  • Active transportation: 
    • Separated pedestrian/cyclist bridge over Whitemud Creek
    • Shared-use path upgrades from 122 Street to 142 Street
  • Retaining walls
  • Noise wall (southbound Whitemud Drive, 47A Avenue to 45 Avenue)
  • Tree impacts and preservation
  • Pedestrian/cyclist bridge over Whitemud Drive near 142 Street


Stage Two is funded by the City of Edmonton through the 2019-2022 Capital Budget and in partnership with the Government of Alberta.

  • Terwillegar Drive/Whitemud Drive interchange upgrades, Whitemud Drive widening and upgrades, widening/rehabilitating the Rainbow Valley Bridges: City of Edmonton
  • Pedestrian/cyclist footbridge
    • Planning and design: City of Edmonton
    • Detailed design and construction: Province of Alberta