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January 23, 2020

Fourmile Canyon Flood Recovery Project Update – Winter suspension starts next week

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Lawrence Construction anticipates suspending most construction-related activities by 4:30 p.m. next Friday, Jan. 31. Stone masons will remain on-site this winter because their work can be completed in cold temperatures and because this effort needs to be completed while creek water levels are low. No travel delays will be needed to complete their work because it will take place off the roadway on retaining walls.

Over the next week, Lawrence will be completing a handful of items that we've asked them to do before leaving, including:

  • Backfilling retaining wall sites with material, which must be done before high-flows return
  • Pouring concrete at multiple culvert locations to finish headwalls and wingwalls
  • Adding rip rap (rock) at other culvert locations to complete inlets and outlets
  • Cleaning up stockpile areas and removing trash and construction materials

The current plan is for them to return in mid-May when warmer temperatures return, which are necessary to complete remaining items, including:

  • Paving the final layer of asphalt in the southern section below Poorman Road
  • Removing asphalt, regrading the subsurface, and repaving the road in the northern section between Logan Mill and Salina Junction
  • Striping and signage installation
  • Installing remaining guardrail
  • Seeding ground and planting trees and shrubs
  • Removing the construction trailer and cleaning up the area at Logan Mill Road

We anticipate these activities lasting until the end of June, weather permitting.

After Lawrence suspends operations, cycling restrictions will be lifted. We do not anticipate restoring the cycling restrictions when construction resumes.

All work in the spring/summer will be completed using flaggers during daytime, weekday working hours. Traffic signals have been removed and will not be used in the canyon again.

Over the winter, representatives from Boulder County and Lawrence Construction will routinely inspect the construction zones to ensure travel safety. Please feel free to contact me at any time if you see anything that might a danger to travelers.

Thank you for you time, patience, and understanding. Let me know if you have any questions.

Have a good day.


Andrew Barth
Boulder County Public Works Department