Trail along Sixteen Mile Creek closed for slope stabilization, reopening expected fall 2026
The Town is engineering a fix for the eroding west embankment at Fourth Line and Dundas, where rock falls and downed trees have shut a section of the Heritage Trail since the slope failures began.

The details
What happened to the trail
The Sixteen Mile Creek Heritage Trail runs along the west embankment of the Sixteen Mile Creek valley. The Town of Oakville says the slope has had repeated failures, mostly in its upper section between the trail and Fourth Line. Natural erosion has sent rock and shale fragments onto the pathway, and fallen trees and vegetation have blocked it.
The Town closed the trail segment just south of Dundas Road and east of Fourth Line due to safety concerns. The closure remains in effect while remediation is designed and built.
What the Town is doing
The Town's project goal is to stabilize the slope with an engineered design and reopen the Heritage Trail. The project area covers about 1.0 hectare (2.47 acres). WSP is the consultant.
- Complete
- Complete — the Town evaluated retaining walls, retained soil systems and regrading, and selected a preferred option
- Complete — ecological land classification, vegetation surveys, Species at Risk surveys and habitat screening
- Complete
- Underway
- Targeted for end of 2025
Environmental constraints
Construction must avoid critical nesting and breeding periods for sensitive local species, per Ministry of Natural Resources and Forestry and Conservation Halton requirements. The project also requires environmental permits and approvals under the Conservation Authorities Act and the Endangered Species Act.
Timeline
The Town's project page targets completion by fall 2026. The tendering step was targeted for the end of 2025. The page does not state a construction start date.
- Fourth Line and Dundas Street West, Ward 4
- About 1.0 hectare (2.47 acres)
- WSP
- Fall 2026
- ServiceOakville: 905-845-6601 or service@oakville.ca
Sources
Town of Oakville
Sixteen Mile Creek Heritage Trail Slope Remediation