Queensferry Crossing
The Queensferry Crossing is a road bridge in Scotland. It was built alongside the existing Forth Road Bridge and the Forth Bridge. It carries the M90 motorway across the Firth of Forth between Edinburgh, at South Queensferry, and Fife, at North Queensferry.
Proposals for a second Forth Road crossing, to meet unexpected demand, were first put forward in the 1990s, but no action was taken until structural issues were discovered in the Forth Road Bridge in 2004. In 2006–07 Transport Scotland carried out a study, and in December 2007 decided to proceed with a replacement bridge. The following year it was announced that the existing bridge would be retained as a public transport link. The Forth Crossing Act received royal assent in January 2011. In April 2011, the Forth Crossing Bridge Constructors consortium was awarded the contract, and construction began in late summer/autumn of 2011.
The Queensferry Crossing is a three-tower cable-stayed bridge, with an overall length of. Around of new connecting roads were built, including new and upgraded junctions at Ferrytoll in Fife, South Queensferry and Junction 1A on the M9.
The bridge was first due to be completed by December 2016, but this deadline was extended to August 2017 after several delays. It is the third bridge across the Forth at Queensferry, alongside the Forth Road Bridge completed in 1964, and the Forth Rail Bridge completed in 1890. Following a public vote, it was formally named on 26 June 2013 and opened to traffic on 30 August 2017. The bridge was formally opened on 4 September 2017 by Queen Elizabeth II, fifty-three years to the day after she opened the adjacent Forth Road Bridge.
Background
A crossing route over the Forth had existed at the site since the eleventh century, when the queen of Scotland, Margaret, founded a free ferry to take pilgrims north to St Andrews. The site of the ferry crossing became the location of the Forth Road Bridge, which opened on 4 September 1964. Proposals for an additional road crossing at Queensferry were drawn up in the early-1990s, as part of the "Setting Forth" consultation document prepared by the Scottish Office. The plans met stiff opposition from environmentalists and from the City of Edinburgh Council on the grounds of increased traffic. Following the Labour victory at the 1997 general election, the proposals were shelved.The existing bridge had a planned design life of 120 years, but by the early-2000s, the planned theoretical capacity for the bridge was being routinely exceeded. It was designed for up to 11,000,000 vehicles per year, but this had risen steadily to 23,000,000 vehicles in 2006. Between 2003-05, an inspection programme found that the main suspension cables had suffered an estimated 8–10% loss of strength as a result of corrosion. Projections highlighted the likelihood of an accelerating loss of strength, with traffic restrictions to limit loading required in 2014 in the worst-case scenario. In 2006-07, Transport Scotland carried out a study to examine the options and in December 2007, the decision was made to proceed with a replacement bridge.
The strategic transport importance of the road bridge, and the threat of closure by 2019 if major structural work was not successful, led to fears of serious economic consequences, especially as work on a new crossing was estimated to take up to eleven years. Scottish Transport Minister Nicol Stephen commissioned a new study, which priced a second Forth Road Bridge at £300,000,000, in 2003. The Forth Estuary Transport Authority voiced support for a new bridge in 2005, and in 2006 the UK Transport Secretary, Alistair Darling, spoke in favour of the idea.
Planning
In 2007, the Forth Replacement Crossing Study was commissioned by Transport Scotland to examine various options for new bridges or tunnels across the Forth. The report recommended adoption of a cable-stayed bridge, located to the west of the Forth Road Bridge, as the preferred solution. The study concluded that this option was significantly cheaper than a tunnel, would take less time to construct, and would represent better value for money; though it was noted that a tunnel would have an advantage of less impact on the environment. In December 2007, Finance Secretary John Swinney announced that a new cable-stayed bridge would be constructed, with an estimated cost of between £3,250,000,000-£4,220,000,000. He claimed it would be "the largest construction project in a generation in Scotland".There was opposition to the project on environmental, traffic and cost grounds. The ForthRight Alliance, an umbrella group including Friends of the Earth, the Scottish Green Party, the RSPB, sustainable transport groups and other local organisations, opposed the scheme since 1994, and presented arguments that the Forth Road crossing could be repaired and maintained. Another group, Forth Tunnel Action Group, campaigned for a tunnel as the solution with lowest costs and fewest long-term environmental impacts.
It was initially suggested that the new bridge would be funded via the Scottish Futures Trust, an alternative to public-private partnership funding for major public-sector schemes. However, the Scottish Government announced in December 2008 that public funding would be used. As part of the Scottish Government's Strategic Transport Projects Review, the new Forth crossing was priced at between £1,720,000,000-£2,340,000,000. Under the revised scheme, the existing bridge will be retained for public transport, cyclists and pedestrians, and the new bridge was to be operational by 2016.
A joint venture between consultancies Arup and Jacobs was appointed as project manager, and in February 2008, environmental and technical studies began; continuing throughout 2009. Public consultations were held, and some changes to the scheme were made in response to the comments received. An environmental statement was published in November 2009, coinciding with the introduction of the Forth Crossing Bill into the Scottish Parliament by John Swinney. A majority of MSPs voted in favour of the new legislation on 16 December 2010, and the Forth Crossing Act received royal assent in January 2011.
Bidding process
In 2009, Transport Scotland solicited for tenders to construct the proposed bridge. Although Transport Scotland received 39 expressions of interest, concerns over the risks associated with the fixed-price contract resulted in only two consortia of large construction companies bidding. Due to the bidders' concerns that the bidding process itself would prove to be an expensive proposition, the Scottish Government allocated £10 million to defray the bidders' costs during the full bidding process, should the project be abandoned.The two consortia were Forthspan, which included Morgan Sindall, BAM Nuttall and Balfour Beatty; and Forth Crossing Bridge Constructors, which consists of Dragados, Hochtief, American Bridge, and Morrison Construction. Bids for the main contract, priced at between £900,000,000-£1,200,000,000 and including design and construction of the bridge and approach roads, were submitted in January 2011. In March 2011 the Scottish Government announced FCBC as preferred bidder, with a bid of £790,000,000. Ramboll is leading the Design Joint Venture which includes Sweco and Leonhardt Andra and Partners.
In addition to the main contract, two smaller contracts form part of the scheme. The contract to implement the Intelligent Transport System traffic management system in Fife was awarded to John Graham Ltd, with a tender of £12,900,000, while the upgrade of M9 Junction 1a was awarded to a joint venture between John Sisk and Roadbridge, with a tender of £25,600,000. As with the main contract, the tenders received were below the original estimated budgets. Naeem Hussain, Global Bridge Design Practice Leader at Arup, was the lead design engineer for the project.
Construction
Preparatory works for the new bridge began in September 2011 with works beginning at the southern end of the M90 to build the northern approach roads. 149 segments of bridge deck, each of which is long and wide, were constructed in China and Spain, then delivered by sea in October 2013. The approach steel bridge sections were manufactured by Cleveland Bridge & Engineering Company in Darlington.The towers reached in height in August 2015, making it the UK's tallest bridge. The completed towers stand at.
On 28 April 2016, one construction worker was killed and another injured in an accident involving a crane. Work on the bridge was halted to allow an investigation to take place.
The bridge was due to be completed by December 2016, but that date was put back to May 2017 due to weather delays slowing construction, with 25 days lost due to high winds during April and May 2016. An additional delay was announced in March 2017 as a result of high winds, making work on the structure difficult and unsafe for workers. The opening of the bridge was pushed back to the summer of 2017 as a result of "adverse weather conditions" delaying work on the bridge.
The bridge opened on 30 August 2017 and was formally opened by Queen Elizabeth II on 4 September 2017.
The bridge
The bridge is a cable-stayed structure, with three towers each high. Including approaches, the overall length of the bridge is ; at opening, it was the longest triple tower cable-stayed bridge in the world. The bridge carries motorcycles, cars and heavy goods vehicles, while public transport, cyclists and pedestrians use the Forth Road Bridge. Wind shielding has been built into the design, to enable use of the bridge in high winds, which often led to restrictions on the old bridge. The bridge was closed for the first time on 11 February 2020, 30 months after opening, due to accumulations of ice on the towers. Some of the ice then fell onto the carriageway, which damaged eight vehicles and prompted the closure.The bridge is the third crossing of the Forth at Queensferry, alongside the Forth Road Bridge, completed in 1964, and the Forth Bridge, a railway bridge completed in 1890. It is sited west of the road bridge, with the northern landfall at St Margaret's Hope, between Rosyth Dockyard and North Queensferry and the southern landfall just west of Port Edgar in South Queensferry. The central tower was constructed on the Beamer Rock, a small islet in the Forth.
The project was known as the Forth Replacement Crossing, and a name for the new bridge was selected in a public vote in 2013 after a panel of independent advisers provided a shortlist of possible names. Five names were shortlisted: Caledonia Bridge, Firth of Forth Crossing, Queensferry Crossing, Saltire Crossing and St Margaret's Crossing. A public vote was held up until 7 June 2013 and the name Queensferry Crossing received the most votes: 12,039 out of 37,000.