About the Tees Barrage

(Original article Wikipedia)

The Tees Barrage is a barrage across the River Tees just upriver of Blue House Point in the borough of Stockton-on-Tees in North East of England and is used to control the flow of the river, preventing flooding and the effects of tidal change. The Tees Barrage comprises a river barrage, road bridge, footbridge, barge lock, fish pass and white water course. The waters above the barrage are permanently held at the level of an average high tide and are used for watersports such as canoeing, jet skiing, dragonboat racing and incorporates a 1 km rowing course.


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Design & Construction

The concrete base of the barrage is 70 m wide, 32 m long, and 5 m thick; it is supported by five concrete piers. In between the piers are four 8 m tall, 50 tonne fish belly plates to control the flow of water, operated by 21 tonne hydraulic rams. The 600 ton road bridge[3] is of a tubular steel arched viaduct design specified at 45 units of HB motorway loading. The bridge has eight welded tubular steel arches each 17.5 m wide with a 5 m rise but only the four central arches actually cross the waters of the river Tees. The arches are sprayed with green paint and are sealed against corrosion. Some 16,500 cubic metres of concrete and 650 tons of steel went into the building of the barrage. Read more

On the downstream side of the central pier is a 29 m tower of lights with reflective globes and plates, supported by guy ropes. Illumination is provided by four lights on the concrete barrage base for ease of maintenance. The barrage has two pavilions, one on the south bank, and a little-used one on the north bank, both extending under the road bridge. The south bank pavilion houses the barrage control room and the offices of the SMi – Stockton Middlesbrough Initiative'. A visitors' centre is also planned for the barrage. The barrage has a design life of 120 years. The project also included the regeneration of 100 ha of adjacent derelict land producing riverside walks, parkland and leisure facilities.

The Teesside Development Corporation proposed a barrage across the Tees in an act of Parliament[11] and then organised a design competition for the barrage that was won by Ove Arup and the Napper Partnership. The barrage was constructed by Tarmac Construction. Construction work was started on 4 November 1991 and with WJ Groundwater Limited diverting the Tees from its course and dewatering the ground. It was at the time the largest civil engineering project in the UK.


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Operation

The barrage was opened on 22 April 1995 with an international competition on the white water course, and inaugurated on 17 July the same year by HRH the Duke of Edinburgh. In April 2001 ownership of the Tees Barrage and white water course was passed to British Waterways (now the Canal & River Trust) from its original owners English Partnerships. The Canal & River Trust are also responsible for managing the 11 miles of navigable grade A two star waters of the river Tees from the barrage up to the Low Moor Weir at Low Worsall beyond Yarm. Read more

Operation of the river below the barrage is the responsibility of the Tees and Hartlepool Port Authority. Large quantities of natural debris such as branches are being washed down and caught by the barrage that otherwise would have been taken out to sea, and there are ongoing studies looking into the feasibility of burning this debris for power generation in waste-to-energy power stations.


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Barge Lock

The lock is a single-rise lock with two pairs of lock gates to allow light river traffic to negotiate the barrage. The dimensions of the lock are length 24.88 m, beam 6.08 m, height 5.37 m with a draught of 2.48 m.[20] If necessary, when the lock is in use, a single leaf steel bascule lifting bridge over the lock is raised to allow the passage of lock traffic. There is no charge to use the lock however users must have permits to use the river both above and below the barrage.


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Footbridge

A steel footbridge carries walkers and cyclists across the concrete piers of the barrage on the Teesdale Way, part of the National Cycle Network. The footbridge consists of two parts, a steel footbridge across the concrete piers and a hydraulically operated single-leaf steel bascule across the lock to allow river craft to pass. Although the public cannot gain direct access to the barrage itself, the footbridge affords excellent views of the fish belly plates and hydraulics.


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Fish Pass

To allow migratory salmon and sea trout to negotiate the barrage a fish pass with fish counter and viewing area is installed next to the north bank pavilion. Some angling groups argue that the progress of migratory fish is delayed below the barrier as fish have difficulty finding the very narrow entrance to the fish pass and that excessive numbers of foraging seals are taking advantage of this delay and are predating these fish and thus damaging the recovery of salmonids on the Tees. Read more

The fish pass still only has provisional approval from the Environment Agency and as an interim measure fish pen stocks are being used on the river and the barrage lock is being operated in such a way as to allow fish to pass. Starting in April 2008 British Waterways commissioned a three-year electronic fish tagging survey to help understand the interactions and relationships between various wildlife at the barrage focusing on seal numbers and salmonid migration..


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The International White Water Centre

The Tees Barrage International White Water Course was built in 1995 at a cost of £2m. The course is owned by the Canal & River Trust but administered by Tees Active Ltd from the on-site watersports centre. The white water facility offers kayaking, whitewater slalom, playboating and white water rafting plus surfing on the 'surf wave'. Find out more


Information

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