SnoPUD 115kV Transmission Pole Replacement

Replacement of a 115kV transmission structure for Public Utility District No. 1 of Snohomish County, held by Cannon as prime contractor under the District’s Small Works Roster. Cannon sets one 125 foot direct embed steel pole, equivalent to an H5 wood pole, 20 feet deep in a 48 inch diameter shaft with a 22 foot permanent steel casing backfilled with gravel. The structure is framed for both 115kV transmission and 12kV distribution underbuild, the existing wood pole is removed and the existing 115kV and 12kV wire is transferred. The same contract carries 1,100 feet of new fiber optic cable, fiber framing on six structures and one splice box. The site sits on City of Mountlake Terrace land, so access is cut and restored under City direction and replanted with native vegetation.

Services Employed:

• One 125 foot direct embed steel pole set 20 feet deep in a 48 inch shaft with 22 foot permanent steel casing
• Removal of the existing wood pole structure
• 115kV and 12kV framing per District drawings, with grounding
• Transfer of existing 115kV transmission and 12kV distribution wire, splicing as required
• 1,100 feet of fiber optic cable, fiber framing on six structures and one splice box
• Drilled shaft with temporary telescoped casing to stabilize the excavation
• Tree trimming and trail protection coordinated with the City of Mountlake Terrace
• Erosion control plan, restoration with native vegetation and record drawings