Ontario

Bluewater Ferry (St. Clair County, Michigan)
Ferry across St. Clair River on A boat
Open to traffic

Detroit-Windsor Tunnel (Wayne County, Michigan)
Built 1930
Tunnel under Detroit River on US I-375/M-10 & Former Canada 3B in Windsor, Ontario Canada and Detroit
Open to traffic

Whirlpool Rapids Bridge (Niagara County, New York)
Built 1897
Double-decker steel arch bridge over the Niagara River at Niagara Falls, New York
Open to rail traffic on upper deck and two-lane highway traffic on lower deck