Fiber Optic cable depth

My advice is avoid the known area where fiber is buried... this refers to the fiber drop to your home. 

Ground heave depending on soil type and climate can push wiring towards to top of the soil. May have no issues using aerator first 2 to 3 years but over time with ground heave you may one day damage the line resulting in no service till a temp fiber line is placed on top of the ground ($99 service call) PLUS billed for the cost of a local contractor to bury the new line which could be several hundreds to thousands of dollars depending on length of fiber and if boring needs to occur. 

Avoid these potential interruptions to service and expenses by not aerating known  fiber path. 

Just my thoughts...

All anyone here can tell you is how deep it's supposed to be buried.  That does not tell you how deep it is actually buried.  I would suggest a few careful spot excavations to verify the depth.

I have an AT&T fiber optic cable running from the junction box by the sidewalk to my house. This cable is covered with some soil but is not burried deep in the ground or protected by installing it in a raceway.

The cable has been damaged in a couple of occasions.

Does anyone know why they don’t run this cable in a raceway?

2 year old topic. If they buried it to NEC requirements they wouldn't need conduit, if you were to bury some conduit I'm sure you could talk them into using it. See this topic to see what the NEC requires. Closing this topic to further posting.