Day Road Culvert Replacements at Clack and Gough Creek

Heavy rains caused debris blockages and washed out culverts at Gough Creek and Clack Creek, located between Roberts Creek Provincial Park and Mt. Elphinstone Provincial Park.

Gough Creek and Clack Creek cross Day Road at approximately 1.6 km north of Highway 101. Gough Creek crosses Day Road about 210 m west of the Clack Creek crossing. The two creeks flow south and join with Roberts Creek downstream, before eventually flowing into the Strait of Georgia. The project will: 

• Replace washed out culvert
• Repair shoulder erosion

Day Road

• Seal-coated, low volume road
• The road is about 5 m wide and is raised above the adjacent ground in most areas
• Surrounded by heavily forested areas
• Services approximately six rural residential lots in the Roberts Creek community

Gough Creek

• Channel is well-defined, with a typical width of 3-6 m upstream of the crossing, widening to a maximum of 12 m near the culvert inlet
• 6-10 m wide near the outlet and widens downstream to an approximately 40 m wide flood plain with a poorly defined 5 m wide channel

Clack Creek

• Channel is about 3-5 m wide upstream and widens to a maximum 20 m width near the culvert inlet
• On the downstream side, the channel is 3-6 m wide, with a floodplain that is approximately 50 m wide

Status

• Emergency Interim Repairs (Completed January 2023)
  • Removal of washed-out culverts and debris blockage
  • Repair of road embankment erosion
• Additional investigations (Completed)
  • Measures to ensure the site can withstand another fall coastal cycle in 2023
  • Ongoing maintenance will continue until permanent repairs commence
• Temporary Repairs (completed in September 2023)
  • Delineation of roadway
  • Riprap and gravel restructure of the shoulders
  • Removal of sections of washout culverts in Clack Creek was not completed during Phase 1 and this will be completed during Phase 2 – Permanent repair works
  • Temporary culverts held up during the December 4th, 2023, flooding event. These temporary culverts are functioning well and flowing with no sign of issues.
• Permanent Repairs
  • The 100% detailed design for permanent repairs was completed in January 2024
  • Advanced tree clearing work was completed in February 2024
  • Public tender for the construction work was posted in April 2024
  • Contract awarded to Heavy Civil Infrastructure Ltd. on June 27, 2024
  • Construction commenced on July 29, 2024
• The project has replaced the washed-out culverts with larger concrete box culverts to accommodate future storm events and climate change
• Repairs will also address shoulder erosion and embankment strengthening
• With the rainy season approaching, interim stabilization works will be completed through to mid-December to secure these sites over winter, including placement of riprap to prevent erosion of the channel banks and roadway embankment
• Potholes will be filled, driveways repaired and road graded
• These sites will be completed in 2025, when the next appropriate environmental window for work is available

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