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Bridge and dam over the River Tees in England

The Tees Barrage is a barrage and road bridge across the River Tees, Northern England, just upriver of Blue House Point and is used to control the flow of the river, preventing flooding and the effects of tidal change. It is between the towns of Stockton on Tees and Thornaby, road access is only by the latter with limited road access to the Tees's north bank. The Tees Barrage comprises a river barrage, road bridge, footbridge, barge lock, fish pass and access point to a 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 Tees Barrage and Tees Barrage International White Water Course were developed by the defunct Teesside Development Corporation.

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.
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.

On 8 June 2007 a new facility was opened for testing prototype marine current turbines and other turbine devices. This facility is operated and funded by the National Renewable Energy Centre. It uses the hydraulic head in the barge lock to release water through sluices at a controlled velocity to create a simulation of steady ocean current conditions downstream of the lock. The first turbine to be tested at this site was Evopod, a semi submerged floating tidal turbine developed by offshore consultancy Ocean Flow Energy Ltd based in North Shields. The test was largely a success and further devices are booked including a Rugged Renewables Savonius rotor that is to be deployed as a building mounted turbine. The development of this facility completes NaREC's portfolio of test facilities.

As part of the project, an artificial whitewater course was created that has since hosted many significant watersport competitions. The £4.6 million facility was opened ahead of the 2012 London Olympics. It produces its own green energy, which it feeds back into the National Grid.

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.

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. 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.