Major road safety work is under way at one of Perth’s busiest gateways.
Motorists have been warned to expect delays during two weeks of upgrades at the Craigend Interchange, to the south of the city.
Around 30,000 vehicles use the M90 junction every day.
Trunk road authority Bear Scotland said the improvements, involving an upgrade of road safety barriers, will “considerably enhance” safety for road-users.
The work is being carried out during the school holidays when daytime traffic flow is generally lower.
It is the latest major roads project in the city, with work ongoing between the Broxden and Inveralmond roundabouts.
The Craigend upgrade will be carried out in two phases. The first leg began after morning rush hour on Monday and involves improvements on the M90 northbound slip into Perth (the A912 Edinburgh Road).
The second stage is scheduled to start a week later on Monday, August 14, and will focus on the A912 southbound carriageway towards Bridge of Earn.
Both north and south-bound carriageways will be reduced to single lanes and a temporary 30mph zone will be put in place to protect workers.
These lane closures will remain for the duration of the work, which is due to end on Sunday, August 20.
The operation was expected to lead to tailbacks and congestion during peak times, with some motorists already raising concerns about an apparent lack of signs.
Bear Scotland issued a warning about the work last week.
The company’s north-east representative Andy Thompson urged motorists to plan their journeys in advance and check Traffic Scotland’s website for up-to-date journey times.
“These works will allow us to ensure that the trunk road network remains at the highest standard, and the improvements are essential to ensure the bridges remain safe for road users,” he said.
“The lane closures will protect our team and the public while the bridge maintenance work is competed.”
Mr Thompson added: “Every effort will be made to reduce any impact to road users during this scheme, and our teams will do all they can to complete the works as quickly and safely as possible.”
Bear Scotland said that material removed from the carriageway will be recycled using Sepa-approved methods.
