You're welcome.
If this is in fact the dig-holes and they are not built-in or part of DLC, you can look in the dependencies for the route and find the dig-hole asset. Right-click and choose Open... and config.txt file.
In the config.txt file look for
surveyor-only 1
If the tag doesn't exist, add it and place a 1 in the middle column under the other items. Use spaces and not the tab key.
Save the config.txt file and submit the asset.