CASE STUDIES
PROJECT TYPE
Transmission Lines
LOCATION
New York, USA
LENGTH / HOLE DIAMETER
DIVISIONS
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Over the course of 16 months, The Crossing Group completed a large number of trenchless crossings for the Champlain Hudson Power Express (CHPE) project. This buried transmission line was designed to deliver 1,250 MW of renewable hydroelectric energy from Canada to the New York Metro area, passing through challenging terrain and numerous urban areas along the way.
The Crossing Group utilized the capabilities of all four of its divisions to help the project owner minimize disruptions to wetlands, waterways, ecosystems, and communities across New York State. Horizontal Directional Drilling (HDD) was the primary trenchless technology for the project, but onsite crews utilized various other tunneling methodologies to overcome specific technical and environmental challenges.
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In many locations, the project encountered extremely hard ground conditions — including areas with soft surficial material above a bedrock layer. To overcome these challenges, The Crossing Group installed casing in the surface material and utilized heavy HDD rigs to pass through rock. Onsite crews also used intersect rigs when necessary, placing one rig at the entry point and another at the exit point. Each rig completed one half of the crossing until intersecting in the middle, allowing for longer crossings through hard material.
The CHPE project also passed through several towns and communities with existing underground infrastructure. In these areas, The Crossing Group used HDD technology to safely navigate beneath these networks of gas lines, power lines, high pressure water lines, and a variety of other key utilities. While working in urban environments, crews leveraged the maneuverability and decreased footprint of light HDD rigs to address any challenges relating to confined work spaces.
The CHPE project demonstrated The Crossing Group’s ability to effectively deploy and sustain a large fleet of equipment over an extended timeline. This collaborative approach between The Crossing Company, The HDD Company, The Tunneling Company, and The Trenchless Company provided the project with access to over sixty trenchless spreads — ensuring crews could employ the right technology for each location. As a result, the owner was able to install their highly-ambitious renewable energy infrastructure as efficiently and sustainably as possible.
The CHPE project demonstrated The Crossing Group’s ability to effectively deploy and sustain a large fleet of equipment over an extended timeline. This collaborative approach between The Crossing Company, The HDD Company, The Tunneling Company, and The Trenchless Company provided the project with access to over sixty trenchless spreads — ensuring crews could employ the right technology for each location. As a result, the owner was able to install their highly-ambitious renewable energy infrastructure as efficiently and sustainably as possible.
