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Tower Solar
Utilities & Energy

Tower Solar

Boardman, OR

At Avangrid's Tower Solar facility west of Boardman, Oregon, Pacific Foundation installed drilled shafts for Palouse Power with project-specific top-of-shaft alignment and finishing requirements.

Drilled Shafts Reinforcement Cage Placement Top-of-Shaft Alignment and Finishing Field Layout and Verification
Project Overview

Highlights

  • Drilled-shaft foundations for utility-scale solar infrastructure
  • Project-specific shaft-top alignment and finishing requirements
  • Field layout and verification across a large foundation layout
  • Construction completed and grid connection achieved in June 2026
Pacific Foundation Scope

Scope of Work

The drilled-shaft work required consistent shaft-top positioning and finish conditions across the site. Pacific coordinated drilling, reinforcing cages, top-of-shaft forms and templates, concrete placement, finishing, and field checks so each completed shaft met the specified interface for follow-on work.

Field Execution

Methods and Site Conditions

Methods

Service Drilled Shafts Large-diameter drilled foundations for structures that need deep support, high load transfer, lateral resistance, or low-vibration installation through difficult ground.
Method Reinforcement Cage Placement Listed project method.
Method Top-of-Shaft Alignment and Finishing Listed project method.
Method Field Layout and Verification Listed project method.

Site Constraints

Each shaft top had to meet project-specific alignment and finishing requirements across a large, repetitive foundation layout.

This condition affects access, sequencing, and field coordination for the project scope. Pacific Foundation accounts for these constraints when planning equipment movement, crew access, work-area controls, and coordination with adjacent construction activity.

Related Capabilities

Services and equipment

Service Drilled Shafts Large-diameter drilled foundations for structures that need deep support, high load transfer, lateral resistance, or low-vibration installation through difficult ground.
Next Step

Send Us Your Plans

Send the drawings, specifications, geotechnical report, pile or shaft schedule, and site constraints. Pacific Foundation can review the foundation scope and next steps.

Request Scope Review