PROJECTS | NORTH AMERICA
ADVANCING PROJECTS
Spotlights on a few utility and energy infrastructure tunnel projects underway in the US, and the advanced status of a major Canadian transport project.
Much of the work on underground infrastructure in mature economies calls for the investments to deal with age and change, although new projects are abundant too. This is perhaps particularly true for the US and Canada. In this feature we look at a few such projects from the
many, such as, in the US: ● the bypass tunnel to help resolve the problems with leaks in the Delaware Aqueduct;
● the drainage capacity improvements in Manchester, NH, to help handle problems with overflows and to improve water quality; and,
● in the Great Lakes area, for an initiative to improve energy availability and resilience a tunnel is proposed to be built to house pipelines carrying oil and natural gas liquids.
Below:
Diagram showing the existing aqueduct and the bypass tunnel beneath the Hudson River
In Canada, like the US, a number of transport projects are underway in major cities. One such project is Toronto’s Eglinton Crosstown West Extension, which is at an advanced status. These projects are briefly outlined below.
US: FIXING THE LEAKING DELAWARE AQUEDUCT Water leaks from conduits, but ideally with minimal losses and insignificant impact upon the conveyance infrastructure. But deterioration of different kinds does happen, in different ways, by different means, and at different times. There are leaks on sections of the 85 mile-long
Delaware Aqueduct tunnel. They were discovered in the 1990s, deep under the Orange County Town of Newburgh, adjacent to the Hudson River. Fixing such a problem is no small task. In 2010, New York City (NYC) announced a plan to
repair the leaking sections of the aqueduct. The budget for large programme of improvements to fix leaks has been put at around US$2 billion. A key feature of the repair and improvement
programme is to build a 2.5 mile-long bypass tunnel around extensive zone of the leaks. NYC’s Department of Environmental Protection (DEP)
is undertaking a new procurement and contracting process for the bypass tunnel.
20 | November 2025
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