T&D World Magazine
National Grid foundation engineering
<p>Since 1871, an active railway has crossed Hamlin Marsh, and in the 1920s, crews built a 115-kV transmission line just 50 feet from the track on a parallel line. To improve reliability, National Grid endeavored to reconductor 7 miles of this decades-old line with minimal impact to the environment.</p>

Foundation Engineering

National Grid uses helical pier foundations for complicated line rebuild through wetlands with access restrictions.

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