Buried heat tape with insulation to prevent freezing?

I asked here about grade before with a similar issue but I am adding more details now I have a situation where the main water line coming to my house goes through a bridge so it cannot be buried deep enough to prevent freezing. Water company suggested heat tape but most heat tape is restricted to 100-150m and the pipe length is 185m (around 600ft) Will it be enough to only put heat tape in the critical area?

I have the feeling where it’s not worth it if i cannot put heat tape for the whole length of the pipe even if the pipes are buried (word around here is that 60-80cm ~2ft deep should be enough)

I also don’t feel comfortable burying such a complicated system, it sounds prone to fail.

Any tips or experiences will be appreciated.

Thank you 🙏🏼

I asked here about grade before with a similar issue but I am adding more details now I have a situation where the main water line coming to my house goes through a bridge so it cannot be buried deep enough to prevent freezing. Water company suggested heat tape but most heat tape is restricted to 100-150m and the pipe length is 185m (around 600ft) Will it be enough to only put heat tape in the critical area?

I have the feeling where it’s not worth it if i cannot put heat tape for the whole length of the pipe even if the pipes are buried (word around here is that 60-80cm ~2ft deep should be enough)

I also don’t feel comfortable burying such a complicated system, it sounds prone to fail.

Any tips or experiences will be appreciated.

Thank you 🙏🏼