The cache is not at the given coordinates. The coordinates take you to the location where a railway bridge once crossed over norton road. The track was the clarance railway and took coal from the mines in county Durham to ports on the river tees and was a competitor to the Stockton and Darington railway.
This is the bonus cache for our lab caches
A brief history of norton
1825 Stockton and Darlington Railway.
you need to have completed these in order to aquire the final coordinates