Alright, all of you architecture buffs out there, let’s see if you can answer this question:bridges.JPG

How many movable bridges are in Chicago — 15, 25, or over 35?

Hint: A reference book previously featured on this blog will help you find the answer.

Extra hint: It’s the Encyclopedia of Chicago.

Alternative hint: Local Chicago web publication, Gapers Block, featured an “Ask the Librarian” section, where you’ll find what you are looking for.

- Deb Werner (topic suggested by Kate Corcoran)