Traffic Analysis of Chicago River and Lock

Abstract

The vessel-carrying capacity of the Chicago River in Illinois is restricted by a lock, which separates the river from Lake Michigan. Vessels passing through the lock experience long delays during the summer months. An investigation and analysis of this system determined that although the system is now generally operating below capacity the peak periods during summer weekends approach capacity, and the situation is likely to deteriorate in the future. In addition, the river and lock have safety and traffic conflict problems that require attention. Recommendations to mitigate these problems are described.