Ramsay Ravine Trail Instability and Erosion Repairs
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Project Update - August 2023
The trail is back in service and open for Edmontonians to enjoy.
Removals were necessary for the long-term stabilization and as a drainage solution for this trail. The removal areas consisted of predominantly smaller native material and did not include a significant quantity of mature trees. A robust naturalization plan was developed and implemented.
The naturalization plan enhances and improves the existing ravine ecosystem. Native species including aspen, poplar, white spruce, saskatoon, dogwood, willow, wild rose and snowberry will be planted in quantities suitable for restoring the newly constructed slopes.
Ramsay Ravine Trail is a popular paved shared-use path located in central Edmonton. In 2018 and 2019, the City completed interim repairs, however more robust work is required due to ongoing erosion.
Following detailed engineering assessments, a repair plan has been developed including reconstructing the north section of the trail and the installation of a wall on the south end to stabilize the area and prevent additional erosion.
Construction anticipated to begin in February
Construction was completed in the summer
Construction contracts issued for tender
Slope instability at the south section of trail worsened due to heavy rains, causing additional damage and increasing the length of the site to be repaired.
Assessments undertaken to identify causes of trail damage and potential solutions to provide a safe and sustainable trail condition.
As a result of this assessment, several options were identified including:
Completing drainage and waterway work to reconstruct the trail in its original location.
Installation of some form of structural stabilization measures (for example, pile wall) to reconstruct the trail in its original location.
Realignment of the trail away from the eroded bank to construct a new segment of trail in a safe location.
Option of completing drainage and waterway works (including installation of a new culvert) and reconstruction of the trail in its original location was selected for the north section, while the south section would use a pile wall to permit reconstruction of the trail in its original location.
Following heavy rain, the trail banks collapsed further impacting the temporary repair, resulting in another full closure and additional repairs of the trail.
In fall 2019, a more extensive temporary repair was completed after receipt of a Temporary Field Authorization from Alberta Environment and Parks.
The temporary repair included infilling a portion of the collapsed bank with large rock, permitting reconstruction of the trail temporarily in its original location.
In summer 2018, River Valley Parks & Facilities identified a portion of asphalt paved trail collapsing above a culvert along the east bank of the Ramsay Ravine.
The trail was closed to the public in September 2018 for repairs.
Temporary gravel trail was constructed and path reopened.
We are wrapping up work on the Ramsey Ravine Trail project. The trail is now open for public use.
The trail will need to be closed at some point in October 2022, for a 1-5 day period, so that the project team can complete some additional work. All efforts will be made to allow public access during the minor closure as long as we can do so safely.