Drivers in St Helens are being warned to expect delays after roadworks were set up on a major borough highway.
National Grid is carrying out work on Ormskirk Road, Rainford.
The company is making essential gas maintenance on the road to replace old iron gas mains with more durable plastic pipes.
A National Grid spokesman said: “This is to ensure we continue to provide safe and reliable gas supplies to local businesses and residents.”
It is unclear how long the roadworks will be in operation.