Royal Tweed Bridge

The Royal Tweed Bridge is a road bridge in Berwick-upon-Tweed, Northumberland, England crossing the River Tweed. It was intended to divert traffic from the 17th century Berwick Bridge, and until the 1980s it formed part of the A1 road, the main route from London to Edinburgh. However, the construction of the A1 River Tweed Bridge to the west of Berwick has since reduced the Royal Tweed Bridge's importance.

This article is about the newer road bridge in Berwick. For the older road bridge, see Berwick Bridge. For the railway viaduct, see Royal Border Bridge.

Royal Tweed Bridge
Royal Tweed Bridge
Coordinates55.7687°N 2.0085°W / 55.7687; -2.0085
OS grid referenceNT995528
CarriesA1167 road
CrossesRiver Tweed
LocaleNorthumberland
Heritage statusGrade II* listed[1]
Preceded byRoyal Border Bridge
Followed byBerwick Bridge
Characteristics
DesignArch bridge
MaterialReinforced concrete
Total length430 m (1,410 ft)
Longest span108.5 m (356 ft)
No. of spans4
Piers in water2
No. of lanes2
History
DesignerL. G. Mouchel & Partners
Engineering design by
  • Charles Bressey
  • J. H. Bean
Constructed byHolloway Brothers
Construction start1925
Construction end1928
Construction cost£180,000
Opened1928 (1928)
Inaugurated
Replaced by
  • A1 River Tweed Bridge
  • as route of A1
Location

History

It was designed by L.G. Mouchel & Partners, with consulting engineers Charles Bressey and J. H. Bean, and the contractors for construction were Holloway Brothers of London.[2]

Construction took place between 1925 and 1928.[1] The total cost of the bridge was £180,000, and up to 170 workers were employed during its construction.[1] It was opened by the then Prince of Wales, later Edward VIII, on 16 May 1928.[1]

It was built to supplement the older Berwick Bridge a short distance downstream, which still carries road traffic.[3][4] A bridge had first been proposed in 1896, and a scheme was produced in 1914, but the outbreak of the First World War meant that plans were put on hold until 1924.[1] A seven-arched stone bridge was proposed at this time, but eventually the concrete design was decided upon.[1]

The bridge was repaired in 1980, as it had been damaged by de-icing salt and its proximity to the sea.[5] The A1 River Tweed Bridge, which opened in 1984, now carries the A1 road about a mile to the west of the Royal Tweed Bridge, reducing its importance as a crossing of the Tweed.[6]

It is a Grade II* listed building in recognition of its innovative design and striking scale.[1]

Design

The bridge is built from reinforced concrete and consists of four unequal arches, with approach viaducts at each end.[2] The northern end of the bridge is higher, and towards that end the spans are longer.[4][1]

The spans are of lengths 50.1 m (164 ft), 74.4 m (244 ft), 95.5 m (313 ft) and 108.5 m (356 ft), and the approach viaducts are 60 m (200 ft) and 44 m (144 ft) long.[1] The spans consist of four arched ribs, solid in the case of the shortest span and hollow for the longer spans.[1] Columns rise from the ribs and are connected at the top by longitudinal beams, which support perpendicular beams that carry the roadway.[1] The piers and abutments are constructed from mass concrete, and there are expansion joints and a system of wind braces over each of the piers.[1]

The parapets are made of dressed sandstone, and there are cast iron lamposts on either side of the roadway.[1]

At the time of its construction, it held the record for the longest single concrete span in the UK.[1]

References
  1. Historic England. "Royal Tweed Bridge  (Grade II*) (1393563)". National Heritage List for England. Retrieved 5 August 2015.
  2. "Royal Tweed Bridge". Engineering Timelines. Retrieved 5 August 2015.
  3. Rennison, Robert William (1996). Civil Engineering Heritage: Northern England. Thomas Telford. p. 7. ISBN 978-0-7277-2518-9.
  4. Google (5 August 2015). "Royal Tweed Bridge" (Map). Google Maps. Google. Retrieved 5 August 2015.
  5. Mallett, G. P. (1994). Repair of Concrete Bridges. Thomas Telford. p. 43. ISBN 978-0-7277-2007-8.
  6. "Berwick A1 Bridge". Bridges on the Tyne. Retrieved 5 August 2015.
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