A Little Bridge parallel to the A338 that takes you over the River Lambourn. The cache is not at the published coordinates but you will need to go there in order to work out where the cache is actually hidden.
When on the footbridge you need to count the number of thicker vertical wooden support posts for the hand rails. Make sure you count both sides of the path and don't include the thinner vertical wooden posts. Call this number AB.
The cache can be found at:
N51 28.(B-A)(B-7)A
W001 26.BB(2*A)
Checksum for all 15 digits: 50
The Little Bridges series was started by Stanthews in 2009 to highlight small footbridges in remote parts of Wiltshire. Since then the series has been expanded by others all over the country and starting to spread fast, Damian from Winter Foxes has created and updates a list of cachers who has found 10 or more little bridges and can be found here, if you would like to add to the series, please contact Stan on stanthews@aol.com and he will give you a number for your bridge, to qualify, the bridge must be a foot bridge too small for vehicles, please make sure your title exactly matches “Little Bridges # xx then name” including spaces so it will get picked up and added to Damian’s list.
Haqre.