Gull Wing Bridge

Last updated

Gull Wing Bridge
Lowestoft harbour.jpg
Lake Lothing before the bridge was complete
Coordinates 52°28′26″N1°43′59″E / 52.474°N 1.733°E / 52.474; 1.733
OS grid reference TM536928
CarriesVehicles (A12 Road)
Pedestrians
Crosses Lake Lothing
Lowestoft to Norwich line
East Suffolk line
Locale Lowestoft, Suffolk
BeginsDenmark Road
Peto Way (north)
EndsWaveney Drive (south)
Other name(s)Lake Lothing Third Crossing
Named for A gull's wings
OwnerSuffolk County Council
Website gullwingbridge.co.uk
Characteristics
DesignArup
Bam Nuttall
Design Council Cabe
Total length342m
Width22m (maximum)
Height62m (when open)
No. of spans8
Piers in water2
Clearance below 12 metres (39 ft)
(High water)
6 metres (20 ft)
(Railway)
No. of lanes 2 Vehicle Lanes
Shared Use Footway/Cycle Way
Design life120 Years
History
Constructed byFarrans Construction
Fabrication byVictor Buyck Steel Construction
Construction start22 March 2021
Construction cost£148 million (projected)
Opening7 September 2024
Location
Gull Wing Bridge

The Gull Wing Bridge is a rolling bascule bridge that spans Lake Lothing in the town of Lowestoft, Suffolk, England, and is the largest bridge of its kind in the world to date. [1] [2] Designed to be lifted using hydraulic cylinders and to be higher than the existing bascule bridge at the harbour mouth, it serves both as a new link for the arterial roads in the area, such as the A12, and as a means to try to reduce traffic congestion that frequently occurs in Lowestoft.

Contents

The idea of a third bridge crossing for Lowestoft was first suggested in 1918, with a proposed plan for the crossing at Lake Lothing being eventually approved in 2020. Construction of the bridge began a year later, and took three years to be completed, with the bascule span being constructed in Europe before being shipped to England for installation. The bridge's name, picked from several entries in a competition held amongst local schools, was inspired by the local gull population that are a common sight in the town. Originally planned for opening in Summer, delays led to the bridge being opened to traffic on 7 September 2024. [3] [4]

History

The first proposal for a third crossing for Lowestoft was made in 1918, just after the First World War ended, [5] Since the 19th century, Lowestoft was divided by two by development of its port on the coastline, and a canal lock between the western edge of Lake Lothing and the Broads, both of which had already brought in two swing bridges to provide two major arterial routes between the north and south side of the town; the next crossing available for the residents being a bridge crossing south of the village of Haddiscoe. However, a key problem for the third bridge was finding a viable position along the 3 kilometres (1.9 mi) stretch of water between the two crossings. [6]

Growth in road traffic in the 20th century, following World War II, soon exposed problems with the existing bridges linked to the surrounding road layout. The harbour bridge, originally beginning as a swing bridge before later being replaced with a in 1972, constantly has to be opened to shipping moving in and out of the inner port - with an estimated 14,000 vehicles using it each day, [7] [8] the regular opening slowly developed regular traffic jams. [9] While the western bridge - which began as a swing bridge, but was replaced with a lifting bascule bridge, the Mutford Bridge, following major rerouting of the A1117 in Oulton Broad - is not raised so often as its eastern counterpart, a railway crossing to the north of the bridge is regularly used by train services between Lowestoft and Norwich twice an hour, creating additional traffic jams.

Increasing concerns about the traffic situation were raised towards council officals for Waveney and Suffolk politicians, but despite promises to provide a third crossing, particularly during local and general elections, little to no action was taken until the second half of the 2010s, when several proposals were put forward for the third bridge crossing. A key element of these plans was providing a suitable site where the bridge could be built; one proposal placed a third crossing a short distance from the harbour bridge with major road improvements to both access points, yet failed to explain how the regular traffic congestion would be allieviated with its layout.

Finalised proposal

By 2020, councillors gave approval to a plan that would see the construction of a bascule bridge over Lake Lothing, alongside its northern approach being raised over the main rail line into Lowestoft's main railway station. The height of the bridge would be higher than the inner port's water level at high tide, far more than with the existing bascule bridge, and thus would be required to raise far less for a smaller volume of shipping to and from the facilities and Lake Lothing stretch in the west, [10] effectively reducing disruptions to road traffic moving between the northern and southern halves of the town. [11] Alongside this, the proposal also required a reclassification of several roads around the town for the A12 and A146 respectively, with the bridge forming the establishment of a new arterial road through Lowestoft.

Planning permission was granted for the project in April, with the estimated cost of construction being put to around £94 million, but by August that same year the cost of construction had risen to £148 million through delays, the Covid-19 pandemic, and a desire to have a contingency fund "...should any unforeseen issues arise and caters for any further complications caused by coronavirus". [12] The contract for its construction was initially tendered to BAM Nuttall, but this fell through and was later re-tendered to Farrans Construction. [13] The name of the bridge was later decided upon after a competition amongst local schools. The winning name was chosen from an entry by three Year 6 students at Somerleyton Primary School in 2019: Jack Baldry (16) Hayden Nicholls and Eva Ainslie (both 15). They were inspired by the shape of the bascule span's posts resembling the wings of gull, a common bird seen around Lowestoft. [14] They were excited that their name was chosen for the bridge, and are looking forward to looking back in years to come and remembering their link to the bridge.

Construction

Construction of the Northern Approach Construction of Gull Wing Bridge Lowestoft.jpg
Construction of the Northern Approach

Preparatory work began in February 2021, [15] including an unexploded ordnance survey within the water stretch of the bridge's location, [16] with the official groundbreaking ceremony taking place on 22 March. [17] Construction officially began in April, with piling work both on land and the water stretch beginning in June and July respectively, [15] [18] and completed by August 2022. [19] Several of the ground piles for the bridge's foundation required them to be driven to 60 metres (200 ft) below ground level. [20]

In September 2021, Waveney Drive was closed to through traffic, while work began on transforming its junction with Durban Road and the Riverside Business Park into a new roundabout connecting it to the Gull Wing's southern approach, along with dualing of the road to the junction with Tom Crisp Way; [21] as part of the bridge's plan, Durban Road was closed off to Waveney Drive, while the business park received a new access road, Colin Law Way, which was completed in May 2022, [22] and formally opened later that year. [23] The new roundabout on Waveney Drive was completed in January 2023 and the road reopened to traffic that month. [24] Denmark Road was later closed to through traffic in March to make way for construction of a new road layout to the northern approach, including a new roundabout and minor rerouting of the road; [25] this stage of work took seven months, being completed in October, with the road and roundabout opened to traffic soon afterwards. [26]

Installation of the bridge's steel deck sections began with the first section being installed on the Northern Approach Viaduct (NAV), completed in October 2022; [27] remaining sections of the NAV were completed the following year in April. [28] Work on the Southern Approach Viaducts (SAV), was completed in May 2023, [29] with the Control tower's structure being completed two months before this. Surfacing work for the road and footpath sections of the NAV and SAV were completed by the end of 2023.

Main bascule span arriving in harbour for installation from Netherlands Lowestoft Gull Wing Bascule Bridge.jpg
Main bascule span arriving in harbour for installation from Netherlands

The main bascule span, constructed in the Netherlands since work began in 2021, suffered delays for its transportation to Lowestoft by the beginning of 2024, owing to additional testing being required on the section. [30] The section was eventually brought to Lowestoft in March 2024, with work to install it onto the bridge taking place over three weeks that month, with all shipping moving through the new channel for the bridge being suspended until installation was completed. [31] Once the bascule span was in place, reliability testing took place over the next few months, alongside staff training, whilst signage and signal controls were installed, with this preparatory stage causing delays to the opening of the bridge. Work was eventually completed by the end of Summer, with the bridge opening to traffic and pedestrians on 7th September 2024 and an official opening ceremony finalised for November 2024.

Gull Wing Bridge

The bridge's surface consists of a two-lane single carriageway with pedestrian and cycle footpaths on both sides. The bridge maintains a speed limit of 30 mph (50 km/h) for road traffic. [32]

The bascule span of the bridge, which opens up southwards when required, [33] lies around 12 metres (39 ft) above water level during high tides, [34] with the space between the two main spans in the water being around 35 metres (115 ft) - safety features fitted to the span walls limit shipping with a maximum width of 32 metres (105 ft) to be able to pass through its channel. [35] The NAV has ground clearance of around 6-metre (20 ft) over the railway line to Lowestoft station for trains. [36] Road access in the south is via Waveney Drive, while in the north it is via Peto Way and Denmark Road. [37]

Reclassification of Roads

Due to the Gull Wing Bridge being designed to become part of the A12 road, several roads around Lowestoft were reclassified to reflect the new primary route that will run through the town upon completion of the bridge. [38] [39] These changes will include the following:

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References

  1. ↑ Kanaris, Sotiris (21 October 2022). "Future of Bridges | Lowestoft's record-breaking, congestion-busting bascule bridge". New Civil Engineer. Retrieved 4 December 2022.
  2. ↑ "Final stage of Gull Wing Bridge installation begins in Lowestoft". BBC News. 9 March 2024. Retrieved 11 March 2024.
  3. ↑ "Update on Gull Wing construction works affecting Denmark Road, Lowestoft". Suffolk County Council. Retrieved 20 September 2023.
  4. ↑ "New era for Lowestoft as Gull Wing set to open". Suffolk County Council . Retrieved 30 August 2024.
  5. ↑ Boggis, Mark (1 January 2021). "Town's new £126m bridge will bring 'enormous benefits'". Lowestoft Journal. Retrieved 20 November 2021.
  6. ↑ Surl et al. 2018, p. 40.
  7. ↑ Arminas, David. "Second bascule bridge for Lowestoft". World Highways. Retrieved 22 November 2021.
  8. ↑ "Lake Lothing: Crossings - Hansard - UK Parliament". hansard.parliament.uk. Retrieved 22 November 2021.
  9. ↑ Humphrys, John (23 March 2015). "Election essay: The town that's used to being disappointed". BBC News. Retrieved 20 November 2021.
  10. ↑ Horne 2021, p. 19.
  11. ↑ "Farrans wins £76m contract to build Lake Lothing third crossing in UK". World Construction Network. 5 October 2020. Retrieved 22 November 2021.
  12. ↑ "Lowestoft: Third crossing costs increase by £54m". BBC News. 17 August 2020. Retrieved 20 November 2021.
  13. ↑ "Farrans agrees £76m price for new Lowestoft bridge". The Construction Index. 30 September 2020. Retrieved 20 November 2021.
  14. ↑ "Lowestoft's third river bridge gets county council approval". BBC News. 26 August 2020. Retrieved 20 November 2021.
  15. 1 2 "Construction". gullwingbridge.co.uk. Retrieved 1 April 2023.
  16. ↑ Boggis, Mark (8 June 2021). "Work to start on new access road as part of Gull Wing third crossing". Lowestoft Journal. Retrieved 23 November 2021.
  17. ↑ Boggis, Mark (23 March 2021). "'A reality': £126.75m Gull Wing bridge marks the start of work". Eastern Daily Press. Retrieved 20 November 2021.
  18. ↑ https://gullwingbridge.co.uk/wp-content/uploads/2021/09/Marine-Construction-Guide.pdf
  19. ↑ "Gull Wing Facebook Posts Significant Stage Reached Yesterday". Facebook. Retrieved 1 April 2023.
  20. ↑ Boggis, Mark (29 July 2021). "'Awe-inspiring' progress on £126.75m Gull Wing third crossing". Lowestoft Journal. Retrieved 20 November 2021.
  21. ↑ "Notification of Waveney Drive closure for construction works". gullwingbridge.co.uk. Retrieved 1 April 2023.
  22. ↑ "New access road unveiled as £126.75m bridge works continue". Lowestoft Journal. Retrieved 1 April 2023.
  23. ↑ "'Fitting legacy': Family unveil Colin Law Way at £126.75m third crossing". East Anglian Daily Times. Retrieved 1 April 2023.
  24. ↑ "Waveney Drive in Lowestoft to re-open". Suffolk County Council. Retrieved 1 April 2023.
  25. ↑ "Busy Lowestoft road to be closed for Gull Wing bridge construction". Eastern Daily Press. Retrieved 1 April 2023.
  26. ↑ "Roads set to reopen to traffic after SEVEN month closure". Lowestoft Journal. 19 October 2023. Retrieved 11 March 2024.
  27. ↑ Gerrard, Neil (25 October 2022). "Photos | Farrans installs first section of 'Gull Wing' bridge". Construction Management. Retrieved 1 April 2023.
  28. ↑ "Major steel structures arrive for Gull Wing bridge". Suffolk County Council. Retrieved 1 April 2023.
  29. ↑ "Gull Wing Bridge". www.facebook.com. Retrieved 1 April 2023.
  30. ↑ Mark Boggis (17 February 2024). "Final Gull Wing bridge span set to arrive in Lowestoft" . Retrieved 14 September 2024.
  31. ↑ "Final stage of Gull Wing Bridge installation begins in Lowestoft". BBC News. 9 March 2024. Retrieved 11 March 2024.
  32. ↑ "Lake Lothing Third Crossing" (PDF). assets.publishing.service.gov.uk. p. 4. Retrieved 23 November 2021.
  33. ↑ "Lake Lothing Third Crossing" (PDF). assets.publishing.service.gov.uk. p. 5. Retrieved 23 November 2021.
  34. ↑ "Lake Lothing Third River Crossing" (PDF). broads-authority.gov.uk. 2018. p. 2. Retrieved 22 November 2021.
  35. ↑ Horne 2021, p. 9.
  36. ↑ Surl et al. 2018, p. 55.
  37. ↑ "The Lake Lothing (Lowestoft) Third Crossing Order 201[*]" (PDF). infrastructure.planninginspectorate.gov.uk. June 2018. p. 2. Retrieved 20 November 2021.
  38. ↑ "The Lake Lothing (Lowestoft) Third Crossing Order 2020". Legislation.gov.uk.
  39. ↑ "Lake Lothing Third Crossing | National Infrastructure Planning". infrastructure.planninginspectorate.gov.uk. Retrieved 4 December 2022.

Sources

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