Here’s a great chance for you to design a bicycle path the way YOU think it should be! Cleveland Ohio is having a design competition to design the bike path across the Cuyahoga River via the lower concourse of the Detroit Superior bridge. Here are the guidelines for entry.
If you click on Current Competition and then Resorses, you can view pictures and diagrams of the space.
The bridge was built in 1918. The lower concourse is open air. The bridge is over 3,000 feet long and is 96 feet above the river! It will make for some spectacular views while riding!

View of the Detroit-Superior Bridge West to East