Where muddy patches occur the walking track gets wider sometimes, as here, going up the bank. This damages the wildlife margins and reduces them. Investment in a surface about 3.5m wide will make the margins more secure for wildlife to flourish.
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| Surfaces |
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This topic is closely related to the drainage problems on the Walk. These photographs, however, show that abrupt changes of surface or sub-structure are undesirable and the use of poorly sorted or graded material to fill depressions is unwise. |
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The new surface should ideally be of recycled material and not have oil or tar based material in it. It therefore needs particular care in laying to prevent water running along it. It needs to be laid to a camber so water runs to the side and is then carried away to the drainage system in the roads. Underneath the imported material a geotextile layer may be needed to stop it being churned into any soft material below. |
| Drainage | |
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Generally, the elevated sections of the former railway line (on embankments) are less of a problem. Local depressions and changes of sub structure near bridges have caused localised problems in these stretches and need attention.
Where muddy patches occur the walking track gets wider sometimes, as here, going up the bank. This damages the wildlife margins and reduces them. Investment in a surface about 3.5m wide will make the margins more secure for wildlife to flourish. |
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The cuttings and underbridges provide the greatest challenge. The original railway drainage system seems to have silted or failed and a new solution is needed. |
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