Cleveland Bridge UK Ltd have installed TCBs in the bracing connections underneath the structure. The Queensferry Crossing is due to open in 2017.
The stunning, globally unique bridge forms the centrepiece of a major upgrade to the important cross-Forth transport corridor in the east of Scotland, representing a total Scottish Government investment of £1.325 to £1.35bn (at 2016 prices).
The 1.7 miles (2.7km) structure will be the longest three-tower, cable-stayed bridge in the world and also by far the largest to feature cables which cross mid-span.
This innovative design provides extra strength and stiffness, allowing the towers and the deck to be more slender and elegant.