Batman Begins at My Building??

We just got this email on my work account:

Dear Colleagues,

For those of you coming in to work on Sunday, August 1, the following street closings will be in effect beginning at 1: 00 p.m.. They will reopen at 4:00 a.m. on Monday, August 2.

LaSalle Street from Monroe to Jackson
Clark Street from Monroe to Congress
Wells Street from Monroe to Congress
Adams Street from Franklin to Dearborn
Jackson Blvd. from Franklin to Clark
Van Buren Street from Dearborn to Franklin

The building I work in (which takes up a full city block) is bordered by Jackson, Wells, Van Buren, and Financial. Financial is a small street between Wells and LaSalle that divides our building from the Chicago Board of Trade - rumored to be one of the building landmarks Batman Begins director Christopher Nolan wanted to use in the film.

The dates and timing fit with when movie shooting is to appear here in Chicago. I haven't been able to find any info saying that these street closing are associated with Batman Begins, but I'll keep checking.