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  • Alvey-Fairview No.1 - survey


Project Highlights:

  • 99-mile H-frame wood pole rebuild of a 230 kV transmission line
  • MacKay Sposito provided both survey and mapping
  • Performed cadastral and property corner ties
  • Conducted topographic, profile, cross section, and LiDAR verification surveys
  • Located hundreds of miles of existing and proposed access roads
  • Developed plan and profile maps as well as exhibits and legal descriptions for acquisitions
Alvey-Fairview No 1 Transmission Lines - wood poles
Alvey-Fairview No 1 Transmission Line - PLS Cadd

Project Summary

Client: HDR (for Bonneville Power Administration)
Location: Sutherlin, OR
Service Provided: Land Surveying
The Alvey-Fairview No. 1 230 kV transmission line wood pole rebuild consisted of installing new H-frame poles over the entire 99-mile length of the transmission line.
MacKay Sposito provided land surveying and mapping to support the project. Our team was responsible for establishing control networks; performing cadastral and property corner ties; and providing topographic, profile, cross section, and LiDAR verification surveys.
We also located existing and proposed access roads extending for hundreds of miles through the region. The conditions of the access roads varied significantly and included maintained country road, drivable surfaced roads, dirt roads, and impassable roads.
Survey deliverables included legal descriptions and sketches for the proposed acquisition of access road easements and permits for road, utility, and river crossings. Mapping deliverables included updated plan and profile maps generated from historic mylar maps that were converted into a digital format.