General Order 95

Section XI

Supply Lines or Communication Lines Crossing over Railroads

113.3    Limitation of Span Length

The crossing span shall be made as short as 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.