What are the shortest and longest streets in Milwaukee?

The shortest street in the City of Milwaukee is S. Davidson St. It is a mere 55.91 feet long.
By contrast the longest North-South running street is 27th St., which runs 11.89 miles. The longest East-West running street is Oklahoma Ave., which runs 8.33 miles. Finally, the longest diagonal street is Fond du Lac Ave., which runs 8.7 miles.
For other information on streets in Milwaukee, a great source to check out is the book Milwaukee Streets: the Stories Behind Their Names by Carl Baehr. He explores the stories behind their names and provides other interesting facts such as previous names of certain streets.