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A1/B2 Structures Overview

Mainline Structures

The mainline scope consists of 929 lattice steel towers (and some additional transmission line structures) which will be replaced with double circuit davit arm structures (as illustrated on right). The centerline for the new structures will be slightly offset by a few feet. Designing this to 115kV standards, increases the height and reduces the overall number of structures needed in the new design. The lines will continue to operate at 69kV.

Tap Structures

The existing wood structures will also be replaced with proposed single-circuit davit arm structures.

Crystal Lake Tap

Athol Tap