Scammonden Bridge
| Scammonden Bridge | |
|---|---|
View east towards the reservoir
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| Coordinates | 53°38′52″N 1°55′52″W / 53.6477°N 1.9310°WCoordinates: 53°38′52″N 1°55′52″W / 53.6477°N 1.9310°W |
| Carries | Vehicles on the B6114 |
| Crosses | M62 |
| Locale | Kirklees |
| Maintained by | Highways Agency |
| Characteristics | |
| Design | Open spandrel fixed-arch |
| Material | Reinforced concrete |
| Total length | 656 ft (200 m) |
| Width | 24 ft (7.3 m) |
| Height | 120 ft (37 m) |
| Longest span | 410 ft (120 m) |
| No. of spans | 1 |
| History | |
| Designer | Colonel Stuart Maynard Lovell |
| Constructed by | Sir Alfred McAlpine |
| Construction begin | 1967 |
| Inaugurated | 14 October 1971 |
| Opened | 10 December 1970 |
Scammonden Bridge spans the Deanhead cutting carrying the B6114 (the former A6025) Elland to Buckstones road over the M62 motorway in Kirklees, West Yorkshire, England. The bridge and Scammonden Reservoir to the west are named after Scammonden, the village that was flooded to accommodate the reservoir whose dam carries the motorway. On opening, the bridge was the longest single-span non-suspension bridge in the world. and it is the longest concrete arch bridge in the UK.
The bridge was built for the West Riding County Council to the designs of the county surveyor, Colonel S. Maynard Lovell. In March 1962 a model of the 37-mile (60 km) section of the M62 was displayed in Wakefield, the administrative centre of the West Riding County Council. The route of the motorway, from the A572 to the A640 at Huddersfield, was announced by Tom Fraser on 29 October 1964.
The bridge was planned as a flat arch bridge, but aerodynamic considerations led to an open spandrel design. The main span supports eight spandrel columns and there are four other columns over the motorway cutting. The spandrel columns are 18 inches (46 cm) thick.
The arch is a twin box section. Its deck is an inverted T-type pretensioned prestressed concrete beam. The bridge deck is 24 feet (7.3 m) wide. Using computers, its design was calculated to withstand 110 mph (180 km/h; 49 m/s) winds, and was tested in wind tunnels at the University of Nottingham and the National Physical Laboratory. The motorway cutting was profiled with 15-foot (4.6 m) 'steps'.
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