Adding reference numbers on portions of power lines

Do I tag a reference number of an existing structure o a structure on a right of way/portions already acquired and designated as start and end point of a portion of a power line? Like if I tag all NGCP-acquired and designated portions of relocated San Simon-Pulilan section of Hermosa-Duhat-Balintawak transmission line as 227-255, 256-266, and 267-314?