The cost of repairing the ancient bridge and surrounding pathways at Tarr Steps will run into thousands of pounds.
Somerset County Council and Exmoor National Park say the landmark on Exmoor has been affected by landslips, fallen trees and erosion from recent flooding.
More top news
The Royal Bath and West is celebrating 50 years at the showground near Shepton Mallet. Here's a taster, including Downton's Julian Fellowes
Bristol were 6 points ahead on aggregate until a last minute converted try sent Worcester back to the top flight at the first attempt.
Britain's oldest groundsman is offering his life savings to save a local football club which will fold on Sunday unless a solution is found