General Order 95
Supply and Communication Lines in Line Crossings or Conflicts
Limitation of Span Lengths
The crossing span shall be made as short as is practicable. In
no case shall the length of the crossing span be greater than the normal span
of the line, and the length of the next adjoining span shall be no greater
than one and one–half times the normal span.
Spans of extraordinary length, made necessary by unusual conditions
of topography shall be considered as exceptions to the above rule.