Work is under way to upgrade gas pipes between Scorrier and Redruth.
The £420,000 Wales & West Utilities scheme is essential to keep the gas flowing safely to heat and power local homes and businesses.
Barring any engineering difficulties, the project is due to finish by the end of March.
Wales & West Utilities has liaised with Cornwall Council to plan the work and it has been agreed that parts of the Bissoe Cycle Trail will be closed while the project progresses.
Diversion routes will be clearly signposted via the road and the bridleway.
Abby Smith, of Wales & West Utilities, is managing this gas pipe upgrade work. She said: “While most of the gas network is underground and out of sight, it plays a central role in the daily lives of people across the area.
“Whether it’s heating your home, making the family dinner or having a hot bath, we understand how important it is for your gas supply to be safe and reliable and there when you need it.
“We know that working in areas like this is not ideal, but it really is essential to make sure we keep the gas flowing to homes and businesses in the area, and to make sure the gas network is fit for the future.
“We’ll have a team of gas engineers on site throughout the project to make sure our work is completed as safely and as quickly as possible while keeping disruption to a minimum.
“This work is essential to keep the gas flowing to local homes and businesses today, and to make sure the gas network is ready to transport hydrogen and biomethane, so we can all play our part in a green future.”