Bradley Avenue Extension
Last year Coldstream Concrete had the honour of joining The Bradley Avenue Extension as well as The Bradley Avenue Extension & White Oak Tributary Complete Corridor projects in London, Ontario. As part of this London, Ontario road construction initiative, these projects were designed with the purpose of increasing the number of driving lanes on select roads, installing new sidewalks and landscaping, and creating a naturalized drainage channel to manage stormwater and support future development in the area.
How did Coldstream Concrete Contribute?
The Bradley Avenue Extension & White Oak Tributary Complete Corridor project in London, Ontario is a major infrastructure improvement spanning from Wharncliffe Road South to Jalna Boulevard. The project includes several complex structural elements, highlighted by a large precast open-bottom culvert system constructed in two stages. This project marks a significant milestone for Coldstream Concrete, as it represents the largest span culvert ever manufactured by the company and one of the largest precast culvert systems ever constructed in the region. The installation featured two
41.4 m runs of precast footings, and at the heart of the project, a
40.8 m long open-bottom culvert with an impressive
16.2 m span and
2.413 m rise, made up of
36 precast units weighing
42.7 tonnes each. The south half of the culvert system was successfully installed in Fall 2025, followed by the north half in Spring 2026.
What Is a Culvert, and Why Does It Matter for This Project?
A culvert is a structure that allows water to flow under a road while keeping the surface above passable. Unlike a regular culvert pipe, the culvert system used on Bradley Avenue is a large-scale open-bottom culvert, a precast design that leaves the streambed open. This makes it a preferred solution for municipal drainage culvert projects where environmental function matters as much as structural performance.
Why was Coldstream Concrete and Precast Concrete Chosen?
Coldstream Concrete's specialization in
precast concrete made the company an ideal fit for this project. Because precast units are manufactured off-site at Coldstream's own facility rather than cast on location, the Bradley Avenue job site required less space for formwork and staging, and installation time was significantly reduced compared to a cast-in-place approach.
Ongoing Development
While Coldstream Concrete's involvement in the precast culvert installation phase has been completed, both the Bradley Avenue Extension and the Bradley Avenue Extension & White Oak Tributary Complete Corridor projects are set to continue development as part of London's broader infrastructure plan.
Click here for more information on The White Oaks Tributary Complete Corridor,
here for The Bradley Avenue Extension,
or here if you're interested in Coldstream Concrete’s other highlighted projects.
