Motorists have been warned to expect disruption as an Aberdeenshire road is reduced to one lane for the next 18 months.
The one-way system has been introduced at the B966 Fettercairn to Castleton Road at Abbeyton Bridge, near Fordoun, while a detailed assessment of the structure continues over the coming months.
As of Tuesday this week, all northbound traffic over the bridge – also known as the Cocketty Bridge – is being diverted via the junction with the A90 at Fordoun. Southbound traffic will be able to continue using the route as normal.
The assessment has been organised after a routine inspection of the structure identified defects that require further investigation.
Structures Manager Donald MacPherson said the arrangement would remain in place for “up to 18 months” and added: “We will be undertaking some computer modelling of the structure to identify what remedial works might be required.
“The bridge is nearly 170 years old, so reducing traffic to one lane will help lighten the load while this work takes place and reduce the risk of further deterioration.
“We will be continuing with structural assessment work and moving to any associated repair work as a priority, with the aim of clarifying the timescale for completion in due course.”
Emergency and pedestrian access will be maintained while the one-way system is in operation. No disruption to rail services is expected while the assessment takes place.