Solutions

115 kV River Crossing Tower Replacement

115 kV River Crossing Tower Replacement

National Grid

National Grid replaced four single circuit 115 kV river crossing lattice towers that delivered power across a 1,500 foot stretch across a river in Massachusetts. The previous towers were deemed non-climbable due to deteriorated state of the structures. National Grid required the replacement of these towers in order to maintain the integrity of the circuit. In 2014, Commonwealth performed a structure study of the towers and presented three alternative towers for replacement of the current towers.

National Grid selected Commonwealth’s Y-Frame design to replace the existing towers due to the horizontal configuration of the circuits utilizing a monopole structure design which was critical due to the location of the structures. The Y-Frame towers are 225 feet tall single circuit galvanized structures with 26 foot phase spacing. The new towers have a small footprint and are more aesthetically appealing than the previous towers and other proposed designs. The new towers were officially energized at the end of February 2018.

This solution was implemented in the following market(s):

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