Ambassador Bridge Gateway

Detroit, Michigan




MDOT’s I-75 Ambassador Bridge Gateway Project is a $230 million infrastructure investment to take 10,000 trucks off local streets, bring international visitors to the door of the Detroit Mexicantown International Welcome Center, relieve congestion, increase safety, and improve travel on I-75 and I-96 freeways. The Ambassador Bridge is the No.1 international border crossing in North America.  Work originally began on the project in 2004, but stalled. When the time came to complete work, MDOT retained a design/build team to execute quickly, under the spotlight of a highly politicized environment.

Fast Facts

Project Owner

Michigan Department of Transportation


$9.3 million design/build project, completing stalled Gateway project

G2 Services Provided

Geotechnical Design and Construction Assistance
Concrete and Soils Quality Control (QC) Testing Services for the team


  • The project was highly contentious.  Formerly handled by the Detroit International Bridge Company (DIBC), Gateway was ceded to MDOT per the Wayne County Circuit Court and ordered DBIC to fund remaining construction through a $16 Million escrow account.
  • Work was extremely fast-paced , and under the spotlight of a highly politicized environment.
  •  Close collaboration with Client during bid process allowed G2 to mobilize and begin geotechnical studies on the day Notice-to-Proceed was provided from MDOT to the Design Team.
  • G2 provided remote-monitoring to analyze vibration data during construction and immediate response to ‘Alarm Events’.  Recommendations quickly followed to modify construction techniques to minimize impact on nearby adjacent structures.
  • G2 provided continuous evaluation and monitoring of aggregate material stockpiles of varying gradations, allowing for real-time adjustments so that concrete materials were produced  within specifications.
  • G2 maintained strict control and curing of concrete test specimens and daily delivery of Pay Item Test Cylinders to off-site MDOT laboratory for Quality Assurance Evaluation.

Smart. Results. Fast. G2 provided real-time geotechnical support throughout design, which continued even as construction began, and  delivered expedited QC testing on soils and concrete for the entire team.  Mission accomplished.

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