What is the Gordie Howe International Bridge project?

The Gordie Howe International Bridge is a $5.7 billion design-build P3 project that includes a 1.5-mile cable-stayed bridge and border crossing across the Detroit River, connecting Detroit, Michigan and Windsor, Ontario.

What kind of utility investigations has Kiwa T2 completed?

On the US side, Kiwa T2 has performed more than 627 test holes and mapped approximately 375 acres. On the Canadian side, the team completed full SUE on 130 acres, along with 39 test holes and multiple GPR and MCGPR investigations along the seawall.

Gordie Howe International Bridge Design-Build SUE and UC

United States and Canada flags waving on tall poles against a clear blue sky.

7 September 2026

Kiwa T2 supports the Gordie Howe International Bridge with SUE and utility coordination for this major Canada–U.S. design-build P3 project.

Client: AECOM
Project Owner: US and Canadian governments

The Gordie Howe International Bridge (GHIB) is a $5.7 billion design-build P3 project consisting of a 1.5-mile cable-stayed bridge and border crossing across the Detroit River and will connect Detroit, Michigan and Windsor, Ontario. When completed, it will be the longest main span of any cable-stayed bridge in North America at 0.53 miles. The project also includes a Port of Entry in each country and a new interchange with I-75 on the Detroit side. Roadway improvements consist of four new bridges and five new pedestrian bridges and local roadway modifications.

Kiwa T2’s US and Canadian companies are providing Subsurface Utility Engineering (SUE) and utility coordination services as part of the P3 team on both sides of the border.

To date, Kiwa T2 has performed more than 627 test holes and mapped approximately 375 acres of city blocks on the U.S. side for the new US Port of Entry and bridge abutment.
The Canadian Kiwa T2 teams performed full Subsurface Utility Engineering (SUE) on 130 acres at the Canadian Port of Entry prior to and during construction. Additional investigations included 39 test holes as well as multiple GPR and MCGPR investigations along the Canadian seawall to identify subsurface anomalies around bridge footings.

Kiwa T2 is also responsible for the utility conflict resolution with 23 utility owners and more than 1,300 conflict sites between existing facilities and the proposed design found in the US. The Canadian side had far fewer utilities or conflicts to address. This very large international project is a great example of the benefit that Kiwa T2’s experience brings to a design-build project. Our SUE and Utility Coordination professionals worked seamlessly across the border with an extensive number of stakeholders, resulting in improvements to the construction of the project.