The project consisted of a cut-in for the 138kV Heines Substation requiring four new pier mounted dead end steel single-poles. The project was divided into two stages driven by outage requirements.
First stage included installation of two new dead ends along the existing centerline while the substation was being constructed.
Second stage was to split the circuit with minimal interruptions. A creative solution was implemented to achieve a short outage and limit foundation diameters along the existing centerline due to an adjacent high-pressure gas line.
During construction, the drilled piers for the two substation deadends were inadvertently poured several feet short of the intended finished grade elevation. Pier extensions were designed to correct the discrepancy.