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Aerial insert

Aerial insert: In a direct-buried or underground cable[?] run[?], a cable rise to a point above ground, followed by an overhead run, e.g. , on poles, followed by a drop back into the ground.

Note: An aerial insert is used in places where it is not possible or practical to remain underground, such as might be encountered in crossing a deep ditch, canal, river, or subway line.

Source: from Federal Standard 1037C

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