TIME-LAPSE VIDEO: See construction crews erect a railroad bridge in Zoo Interchange

Published July 21, 2014 9:08pm CDT

MILWAUKEE (WITI) -- While traffic in Milwaukee's Zoo Interchange was completely shut off for 54 hours this past weekend, construction crews were busy -- and cameras were trained on their every move.

Check out the time-lapse video below which shows crews erecting the Union Pacific Railroad bridge over I-94.