We have a bunch of lockers in our shower room that are free to use if you have your own lock. They seem to dry out throughout the day quite well in there if they're not too wet. If they're really wet I chuck them on the heater/vent thing that blows air all day in my office - hell I even throw my socks on there if they're really wet. Nobody's ever noticed.
I usually keep them in a locker in the locker room. But one ofthe Other bicycle commuters and I have baeen talking about putting up a Clothes line out side between a Maintance shed ( that has a hook on the side ) and a tree
We're on the second floor and teh art department has it's own covered balcony. So my bike and all my stuff goes out there. Shorts, shirt, socks, shoes... everything is bone dry by the end of the day. 100 degrees and no humidity will do that.