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Forth Road Bridge, Scotland 2017

The Forth Road Bridge in Scotland, which is also known as the Queensferry Crossing, opened to traffic in August 2017, some 53 years since the last road bridge and completing 3 bridges spanning 3 centuries.

Thhe bridge spans the Firth of Forth (Gaelic name “Abhainn Dubh” or the “Black River”) and provides a direct gateway to northern Scotland.

It is the central component of a major upgrade to the cross-Forth transport corridor in the east of Scotland, and represents a total Scottish Government investment of over £1.3 billion.

The bridge is 1.7 miles long (while the overall size of the crossing including the motorway is over 13 miles). It’s the longest, three-tower, cable-stayed bridge in the world. It is also by far the largest to feature cables which cross mid-span. This innovative design provides extra strength and stiffness, giving the towers and the deck a more slender and elegant aspect.

Macalloy provided 1030 Post Tensioning Bars in a variety of sizes between 26.5mm and 50mm in carbon and stainless material.

Along with the bespoke plates, these help to hold down the piers along the bridge within the concrete groundworks.






United Kingdom


Jacobs Arup (Joint venture)

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