One of Chicago's biggest bottlenecks doesn't occur on the roadways, it's on the lakefront trail where it passes Navy Pier. Work began Monday to make the trail a pleasure again, but even that involves ... more 
One of Chicago's biggest bottlenecks doesn't occur on the roadways, it's on the lakefront trail where it passes Navy Pier. Work began Monday to make the trail a pleasure again, but even that involves some temporary pain, reports CBS 2's Derrick Blakley. less 
1 / 26
CBS Local
Mon, Mar 24, 2014 7:40 PM EDT