I-75 Ambassador Bridge Gateway Project

Detroit, Michigan

Project tranformed the busiest international border crossing in North America

HNTB was the prime design consultant for the project to enhance connections between the U.S. and Canada, Detroit and Windsor, and East and West Mexicantown. One of the project’s key functions was to provide direct access between freeways and the privately owned Ambassador Bridge. The project involved the closure of two major freeways, the construction of the state’s first cable-stayed bridge and high occupancy vehicle lanes, reconstruction of the mainline and ramps on interstate 75.

The completed project features a multi-level system of looped ramps connecting two freeways to each other, as well as the Ambassador Bridge. The I-75 Ambassador Bridge Gateway Project completely transformed North America’s busiest border crossing system, while also improving Detroit’s transportation system and reconnecting a cultural community. This complex system of highways, bridges and an international border crossing exemplifies the most innovative solutions found today in transportation infrastructure design.

The success of the project can be attributed to the innovative approach to mobility, navigating the politics involved with a border crossing and keeping the public involved and informed along the way. Operating under the theme of Connecting Neighbors, the project did just that. It enhanced the connections between the U.S. and Canada, Detroit and Windsor, and East and West Mexicantown, thereby helping both the community and economy.