Temporary 50mph speed limit on Perth bridge to remain in place two years on

Two years on, a “temporary” 50mph speed limit on Perth’s Friarton Bridge will remain in place.

The speed restriction is in place for travellers’ safety due to a temporary safety barrier being in place.

Detailed engineering assessments and design work are still under way following reports of spalling concrete in 2024.

When it was built, the M90 bridge – which spans the River Tay – was the longest span steel girder bridge in the UK and the first to use a composite lightweight concrete deck. Construction began in 1975, and it was officially opened in the summer of 1978.

In July 2024, Transport Scotland’s operating company for the North East Trunk Road Unit, Amey, carried out inspections of the Friarton Bridge after receiving reports of spalling concrete from the bridge.

Further surveys were carried out, and temporary traffic management measures were installed.

The speed limit of 50mph has remained in place on the bridge since July 30, 2024.

Asked for an update on the situation, an Amey spokesperson this week said: “The temporary traffic management and speed limit were installed on Friarton Bridge to ensure the safety of the travelling public following reports of spalling concrete from the structure.

“The reduced speed limit is required due to the temporary safety barrier installed on the bridge.

“Detailed engineering assessments and design work remain ongoing, and we will provide further updates when information is available.”