Case study narrative
Project narrative
The decks of the Gordie Howe International Bridge (GHIB) on the United States and Canadian sides are connected, and project officials say the project remains on track to finish in September 2025. It is one of the largest infrastructure projects in North America with a total cost of 5 Billion dollars.
The connection is a momentous milestone, said Heather Grondin, the chief relations officer for the Windsor-Detroit Bridge Authority.
"The bridge deck represents years of planning, design and construction, having involved experienced and hardworking teams of engineers, architects, iron workers, operating engineers and many other skilled laborers," she said.
The six-lane structure across the Detroit River, which will include a path for pedestrians and cyclists, will be the longest cable-stayed bridge in North America at 2,798 feet, bridge officials say. Including the ports of entry and two approach bridges on each side connecting to the main span, the structure will measure about a mile and a half, according to Grondin.
7NT has worked on numerous jobs for the GHIB project starting in 2019 and continuing to the present day. 7NT's geotechnical drilling work has involved the drilling of over 100 borings more than 100-feet deep, drilling for shaft verifications, installation of multiple inclinometers, installation of multiple vibrating wire transducer and vibrating wire piezometers, installation and decommissioning of monitoring wells, and multiple onsite cone penetrometer testing.
7NT has also performed laboratory work by performing compressive strength of light weight concrete for GHIB.
