Using existing water drainage channels under roads

[MAFS]

Hello
I have a question relating to the use of existing rainwater channels under highways (I´m not sure about the correct technical term for these channels, as I am a chemical engineer).
I need to pass a pipeline through (under) a highway, and was thinking of using the existing water drainage channels to do this. Howver, a colleague told me that the curent standard in my country doesn't allow the passage of new pipelines through existing water drainage channels. My question is: do you know any standard that allows for this use of water channels? How can this be done?
Thank you

 

[Maury]

When you say drainage channel, are you referring to an open channel such as a stream or a ditch, or are you referring to a pipe? What type of pipeline are you going to install?

 

[MAFS]

In this case it is a concrete open channel, not a pipe. We intend to install a gas pipeline.

 

[Maury]

Your first concern is the integrity of the pipeline, and locating in on the surface of a concrete channel makes it susceptible to structural damage and to corrosion. The normal method for a roadway crossing (at least in my area) is to locate the pipe line in a casing pipe. The casing is usually steel pipe and can be augered i place. This provides protection for the pipeline and allows it to be removed without excavating the roadway. Surface mounting a pipeline to a concrete channel is not a gooed idea.