From the United States:
I-94 from Detroit, MI and I-69, the modern express way both provide fast and convenient access directly to the Blue Water Bridges, the international bridges connecting Sarnia, ON and Port Huron, MI. Not only are the bridges part of the quickest route between Chicago and Toronto, they allow for high-speed access to unlimited tourist and recreation opportunities.
The Sombra Ferry between Marine City, MI and Sombra, ON also provides daily service from 6:40 a.m. and 10:30 p.m., every 15 minutes. NOTE: It is recommended to call ahead for water level conditions. 1-888-638-4726