Drop-in Pre-construction Information Session
Learn more about Stage 2 design and construction details!
Date: April 23, 2025
Time: 5:00-8:00pm
Location: St. Thomas More Catholic Church
210 Haddow Close (Terwillegar Drive and 23 Avenue)
Upgrades to the Whitemud Drive/Terwillegar Drive interchange are a part of the Terwillegar Drive Expansion Program.
Project Update - Spring 2025
Construction is underway to alleviate congestion, accommodate current and planned transit services, and enhance existing active transportation connections to provide all users with a safe and efficient route. Stage two construction will continue through 2025 and is anticipated to be completed in 2026.
Construction details:
- Girder and bridge deck installation for the eastbound Rainbow Valley Bridge, the Rainbow Valley Pedestrian Bridge and the 142 Street Pedestrian/Cyclist Bridge.
- Completion of the westbound Rainbow Valley Bridge and traffic pattern shift to the completed bridge to accommodate construction work on the eastbound Rainbow Valley Bridge.
- Bus lane construction from 53 Avenue to Terwillegar Drive and completion of the supporting retaining wall.
- Widening of Whitemud Drive eastbound between 53 Avenue and 122 Street.
During construction, Whitemud Drive will have two lanes open in each direction during peak hours.
About the Project
Stage Two consists of Terwillegar Drive and Whitemud Drive Interchange upgrades including major construction on Rainbow Valley Bridge and the widening of Whitemud Drive. Construction is underway to alleviate congestion, accommodate current and planned transit services, and enhance existing active transportation connections to provide all users with a safe and efficient route.
- Rehabilitating and widening the Rainbow Valley Bridge to 4 lanes in each direction
- Whitemud Drive/Terwillegar Drive interchange upgrades:
- Widening the westbound Whitemud Drive to southbound Terwillegar Drive loop ramp
- Widening the northbound Terwillegar Drive to eastbound Whitemud Drive ramp
- Partial ramp widening: northbound Terwillegar Drive to northbound Whitemud Drive and southbound Whitemud Drive to southbound Terwillegar Drive
- Whitemud Drive widening to 4 lanes in each direction between Terwillegar Drive and 122 Street
- A bus-only lane from 53 Avenue to Terwillegar Drive, bypassing the Terwillegar Drive/Whitemud Drive interchange
- Active transportation:
- A new pedestrian/cyclist bridge adjacent to the westbound lanes of the Rainbow Valley Bridge
- Shared pathway upgrades from 122 Street to 142 Street
- A new pedestrian/cyclist bridge over Whitemud Drive near 142 Street
- Retaining walls
- Noise wall (southbound Whitemud Drive, 47A Avenue to 45 Avenue)
- Tree impacts and preservation
