Rehabilitation of the James A. Gifford Causeway on Chemong Lake is to be postponed until 2023 due to major repairs required along the full length of its northern shore, according to a report presented to Peterborough County Council on Wednesday.
Improvements to the causeway were due to be completed this summer, but the current poor condition of the north bank was identified in March during an assessment, the staff report said.
The gabion baskets that support the north bank have failed along the entire length of the causeway, due to age. These baskets are wire mesh containers filled with stone to prevent erosion.
As the north bank rehabilitation works must be carried out in winter, this means a postponement of the road works “so that the structure of the road is not affected by the bank works”, the staff report states.
“Advancing shoreline repairs before any repairs to the road surface will eliminate the risk of damage to new asphalt pavement.”
The repair method for the north bank depends on the location of the existing gas line that was previously installed along the north bank.
Staff are in the process of determining the location of the gas line and once the location is discovered, a decision can be made on the preferred method of repair in consultation with the federal Department of Fisheries and Oceans Canada and the First Nation of Curve Lake, the report says. .
If the gas line is inside the roadway guardrail, angled rockfill can be used, which is more cost effective. If it is outside the railing, a more structurally sound method, preferably using a stone, will be needed.
Once the repairs to the north bank are complete, a separate tender will be issued for the rehabilitation of the causeway, including the construction of a multi-use path, improvement of intersections and rehabilitation of the bridge Chemong and causeway road surface, all to be completed in 2023. .
Council will be asked to approve $275,080 plus HST to cover new North Shore expenses for engineering design, contract administration and inspection services by BT Engineering. Drain Bros. will also be required to sole source contract. Excavating Ltd. for the rehabilitation of the north shore.
A delegation from BT Engineering is expected to attend Wednesday’s council meeting to provide further explanation of the cost impacts of the causeway project.