No injuries were reported in a blaze Tuesday morning at the Old Main Post Office in the Loop.
The extra-alarm blaze was reported about 10:15 a.m. on multiple floors of the vacant building at 433 W. Harrison, according to the Chicago Fire Department. No injuries were reported.
No traffic was being allowed on I-290 east of the interchange because of reports of glass falling on the pavement, according to Illinois State Police.
The Fire Department announced at 11:35 a.m. that the fire had been extinguished.
The city announced in July that a deal had been approved to begin a five-year, $500 million renovation on the building, which had sat vacant since 1995.
Tensions were higher Tuesday when hundreds of New York police officers raided Columbia University and City College of New York while a group of counter-protesters attacked a student encampment at UCLA.