The Township of Brock has decommissioned the aging Sunderland Sand Dome, confirming that a new structure will be built to support winter road operations in the southern portion of the township.
The sand dome has played a critical role for many years, housing the sand and salt mixture used for winter maintenance on local roadways. However, township officials say the structure has reached the end of its service life and can no longer be safely used.
According to a statement provided to Durham Post, the dome was found to be leaking extensively, with visible rot throughout the interior. In several areas, daylight could be seen through the structure, highlighting significant deterioration.
Structural Concerns Prompt Closure
After the damage was identified, the township retained a structural engineer to assess the dome’s condition. The engineering report confirmed rot-related damage and advised that the dome should not be used during winter, citing concerns about its ability to withstand wind and snow loads.
As a result, the township began evaluating replacement options to ensure uninterrupted winter service delivery.
Options Considered by Council
Staff presented three potential solutions to council:
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Repair the existing wooden dome at an estimated cost of $230,000 plus HST. This option would restore safety and include re-shingling, but staff warned that hidden rot could drive costs higher. This option was not recommended.
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Replace the dome with a new wooden structure for approximately $275,000 plus HST. While permanent, staff did not support this option due to higher costs and the fixed nature of the asset.
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Construct a new fabric dome with a temporary foundation at an estimated cost of $195,000 plus HST. This option does not include demolition of the old dome or installation of a concrete or asphalt floor, but was identified as the most cost-effective and practical solution.
Preferred Solution: Modern Fabric Dome
Township staff recommended the third option, noting that fabric domes are increasingly replacing traditional wooden structures across municipalities. These modern domes use advanced materials and technology, offering a life cycle equal to or better than wood, at a lower overall cost.
The township also has the ability to procure the new structure through the Local Authority Services (LAS) Canoe Procurement Group, further reducing costs.
Council has been asked to authorize staff to proceed under Section 6.5 (Cooperative Purchasing) of the township’s Procurement By-law to move forward with the purchase and installation of the new fabric-covered dome as soon as possible.
Officials emphasized that maintaining a weather-protected facility for sand and salt storage is essential to ensure safe and timely winter road maintenance for residents.
Photo Credits : Durham Post
