Queensferry Facts and Figures
The scale of the structure is truly impressive.
- The structure will be 207 metres above high tide (683ft), equivalent to approximately 48 London buses stacked on top of each other and 50 metres (25%) higher than existing Forth Road Bridge.
- 150,000 tonnes of concrete will be poured – nearly the same amount used for the entire London Olympic Park and Athletes Village.
- The steel required for the bridge deck (final design) weighs a total of 35,000 tonnes. That’s the equivalent weight of nearly 200 Boeing 747s.
- The combined steel required for North and South viaducts weighs 7,000 tonnes, enough to make another 23 Kelpies.
- There will be 23,000 miles of cabling used - laid out, this would very nearly stretch around the entire planet Earth.
- It is estimated the construction will involve approximately 10 million man hours.
The bridge will be of a modern design using the latest techniques and technology. Key features which enhance reliability include:
- Two lanes of motorway and a hard shoulder running both north and south bound.
- Windshielding to almost entirely eliminate the need for closures during the frequent periods of high winds in the Forth estuary– a significant resilience issue experienced with the current Forth Road Bridge which does not have wind shielding.
- Using the latest, most durable materials.
- The cables can be replaced with more ease than on the Forth Road Bridge – it can be done as part of normal maintenance works without closing the bridge.
- A dehumidification system inside the box girder to reduce moisture, preventing corrosion.
- Using modern paint systems on the structure.
- Use of thicker road surfacing with longer surface life which can be machine laid making it easier to replace.
- A continuous road surface allowing for a smoother drive over the bridge.
There have been three main contractors for the full scheme:
- Forth Crossing Bridge Constructors (FCBC) – a consortium of Hochtief from Essen, Germany, Dragados from Cadiz, Spain, American Bridge from Pittsburgh USA and Morrison Construction, originally from Inverness, Scotland – is building the bridge and connecting roads.
- Northern Ireland’s John Graham (Dromore) has already completed an upgrade of the M90 in Fife, north of the bridge.
- A joint venture between Irish contractors Sisk and Roadbridge has already completed an upgrade to the M9 south of the bridge.
- The Specimen Design for the Queensferry Crossing was completed by the Jacobs Arup Joint Venture on behalf of Transport Scotland. The Final Design, on behalf of Forth Crossing Bridge Constructors (FCBC), was undertaken by the Design Joint Venture comprising Grontmij, Gifford, Ramboll and Leonhardt Andra and Partners.