St. Lawrence Seaway April 25, 1959
St. Lawrence Seaway April 25, 1959, The St. Lawrence Seaway opened April 25, 1959. It stretches 2,342 miles, making it the longest deep-draft navigation system on Earth.
The system boosted state economies and private businesses up and down the water system.
For example, the Detroit Marine Terminals reported an estimated 65% increase in foreign business during the first full month that the St. Lawrence Seaway was open, compared with the previous May. The Free Press called it the “answer to a centuries-old dream for a sea route into the heartland of America.”