Four of the structures have recently been repaired with help of the Heritage Lottery Fund. A conservation-based approach was adopted, with traditional concrete used for the majority of the repairs and carbon fibre added locally to stiffen a large cantilevered viewing platform. The repair of the structures was the first part of the conservation work and was followed by the reinterpretation of the structures to provide a programme which would sustain their future use. An area of the Bear Ravine is being used for long term testing by Historic England to monitor the performance of the different methods of repair.
The Conservation of Tecton Buildings at Dudley Zoo by Stuart Tappin and David Platts.