The firm lost the region over seven years ago to rival bidder Scotland Transerv – a Balfour Beatty and Mouchel/WSP JV – after putting in a bid that was deemed to be abnormally low.

Now Amey will get back in the driving seat this August after Transport for Scotland announced it had secured a £400m contract for eight years.

The award also includes the option of an extension of up to four years amounting to a total contract value of £690m.

Under the Network Management Contract, Amey will deliver engineering design and operational delivery services for more than 600 kilometres of road.

From Greenock to Dumfries, and out to Stranraer, Amey teams will be providing vital services on key routes such as the A75, A76 and A77, as well as on parts of the M8 and M74 around Glasgow, focused on delivering reliable journey times and a high level of customer care for the people and businesses that use these roads every day.

The firms will be responsible for cyclical maintenance, motorway lighting and traffic signals, barrier repairs, winter maintenance as well as the Trunk Road Incident Support Service (TRISS) – the team who are first on the scene to assist road users on the road network.

With over 1,600 structures in the south west, Amey’s dedicated team of bridge engineers will be monitoring and maintaining crucial assets such as the Erskine and Kingston bridges.

Amanda Fisher, Chief Executive of Amey, said: “Amey is extremely proud of its record of delivery in Scotland, and our dedicated engineers and suppliers welcome this opportunity to continue working with Transport Scotland to support local growth, economic development and a more sustainable service across the South West region.”

Meanwhile BEAR Scotland is expected to be confirmed for the South East region, which was previously held by Amey, under a deal estimated to be worth up to £720m.