"Chicago is a city of bridges but, more importantly for that one weekend day in April 2011, Chicago is a city of movable bridges. Every spring, a few times a week, twenty-seven bridges open in sequence to allow the boats to get to the lake. . . and every fall that sequence is reversed. Via Gapers Block. -ms.08.27.14 #
A post from the daily flow of linkage called Fresh Signals, at Coudal.com.