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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. The barrage is accessible by road only from Thornaby-on-Tees as there is very limited road access to the north bank of the Tees. The Tees Barrage and Teesside White Water Course are developments of the Teesside Development Corporation. == Design == 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.〔〔〔(【引用サイトリンク】title=Information about River Tees )〕〔(【引用サイトリンク】url=http://www.cycle-routes.org/threerivers/3r_bridges/tees_bridges.html )〕 The 600 ton road bridge〔 is of a tubular steel arched viaduct design specified at 45 units of HB motorway loading.〔(【引用サイトリンク】url=http://www.arup.com/bridges/project.cfm?pageid=2299 )〕 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.〔〔〔〔 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.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tees Barrage」の詳細全文を読む スポンサード リンク
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